diff --git a/.golangci.yaml b/.golangci.yaml
index 3d9984e7..8bb78de2 100644
--- a/.golangci.yaml
+++ b/.golangci.yaml
@@ -65,6 +65,8 @@ linters-settings:
         disabled: true
       - name: early-return
         disabled: true
+      - name: use-any
+        disabled: true
       - name: exported
         arguments:
           - "disableStutteringCheck"
diff --git a/go.mod b/go.mod
index 85983e4a..9573d50f 100644
--- a/go.mod
+++ b/go.mod
@@ -74,6 +74,7 @@ require (
 	github.com/grpc-ecosystem/grpc-gateway/v2 v2.18.1
 	github.com/h2non/filetype v1.1.3
 	github.com/improbable-eng/grpc-web v0.15.0
+	github.com/lib/pq v1.10.9
 	github.com/mssola/useragent v1.0.0
 	github.com/patrickmn/go-cache v2.1.0+incompatible
 	github.com/pkg/errors v0.9.1
diff --git a/go.sum b/go.sum
index 2105dccd..60cb6237 100644
--- a/go.sum
+++ b/go.sum
@@ -292,6 +292,8 @@ github.com/labstack/echo/v4 v4.11.2/go.mod h1:UcGuQ8V6ZNRmSweBIJkPvGfwCMIlFmiqrP
 github.com/labstack/gommon v0.4.0 h1:y7cvthEAEbU0yHOf4axH8ZG2NH8knB9iNSoTO8dyIk8=
 github.com/labstack/gommon v0.4.0/go.mod h1:uW6kP17uPlLJsD3ijUYn3/M5bAxtlZhMI6m3MFxTMTM=
 github.com/leodido/go-urn v1.2.0/go.mod h1:+8+nEpDfqqsY+g338gtMEUOtuK+4dEMhiQEgxpxOKII=
+github.com/lib/pq v1.10.9 h1:YXG7RB+JIjhP29X+OtkiDnYaXQwpS4JEWq7dtCCRUEw=
+github.com/lib/pq v1.10.9/go.mod h1:AlVN5x4E4T544tWzH6hKfbfQvm3HdbOxrmggDNAPY9o=
 github.com/lightstep/lightstep-tracer-common/golang/gogo v0.0.0-20190605223551-bc2310a04743/go.mod h1:qklhhLq1aX+mtWk9cPHPzaBjWImj5ULL6C7HFJtXQMM=
 github.com/lightstep/lightstep-tracer-go v0.18.1/go.mod h1:jlF1pusYV4pidLvZ+XD0UBX0ZE6WURAspgAczcDHrL4=
 github.com/lyft/protoc-gen-validate v0.0.13/go.mod h1:XbGvPuh87YZc5TdIa2/I4pLk0QoUACkjt2znoq26NVQ=
diff --git a/store/db/db.go b/store/db/db.go
index 4d6eac78..d65fc2f4 100644
--- a/store/db/db.go
+++ b/store/db/db.go
@@ -5,6 +5,7 @@ import (
 
 	"github.com/yourselfhosted/slash/server/profile"
 	"github.com/yourselfhosted/slash/store"
+	"github.com/yourselfhosted/slash/store/db/postgres"
 	"github.com/yourselfhosted/slash/store/db/sqlite"
 )
 
@@ -16,6 +17,8 @@ func NewDBDriver(profile *profile.Profile) (store.Driver, error) {
 	switch profile.Driver {
 	case "sqlite":
 		driver, err = sqlite.NewDB(profile)
+	case "postgres":
+		driver, err = postgres.NewDB(profile)
 	default:
 		return nil, errors.New("unknown db driver")
 	}
diff --git a/store/db/postgres/activity.go b/store/db/postgres/activity.go
new file mode 100644
index 00000000..a16c2b0b
--- /dev/null
+++ b/store/db/postgres/activity.go
@@ -0,0 +1,88 @@
+package postgres
+
+import (
+	"context"
+	"fmt"
+	"strings"
+
+	"github.com/yourselfhosted/slash/store"
+)
+
+func (d *DB) CreateActivity(ctx context.Context, create *store.Activity) (*store.Activity, error) {
+	stmt := `
+		INSERT INTO activity (
+			creator_id,
+			type,
+			level,
+			payload
+		)
+		VALUES ($1, $2, $3, $4)
+		RETURNING id, created_ts
+	`
+	if err := d.db.QueryRowContext(ctx, stmt,
+		create.CreatorID,
+		create.Type.String(),
+		create.Level.String(),
+		create.Payload,
+	).Scan(
+		&create.ID,
+		&create.CreatedTs,
+	); err != nil {
+		return nil, err
+	}
+
+	activity := create
+	return activity, nil
+}
+
+func (d *DB) ListActivities(ctx context.Context, find *store.FindActivity) ([]*store.Activity, error) {
+	where, args := []string{"1 = 1"}, []any{}
+	if find.Type != "" {
+		where, args = append(where, "type = $"+fmt.Sprint(len(args)+1)), append(args, find.Type.String())
+	}
+	if find.Level != "" {
+		where, args = append(where, "level = $"+fmt.Sprint(len(args)+1)), append(args, find.Level.String())
+	}
+	if find.Where != nil {
+		where = append(where, find.Where...)
+	}
+
+	query := `
+		SELECT
+			id,
+			creator_id,
+			created_ts,
+			type,
+			level,
+			payload
+		FROM activity
+		WHERE ` + strings.Join(where, " AND ")
+	rows, err := d.db.QueryContext(ctx, query, args...)
+	if err != nil {
+		return nil, err
+	}
+	defer rows.Close()
+
+	list := []*store.Activity{}
+	for rows.Next() {
+		activity := &store.Activity{}
+		if err := rows.Scan(
+			&activity.ID,
+			&activity.CreatorID,
+			&activity.CreatedTs,
+			&activity.Type,
+			&activity.Level,
+			&activity.Payload,
+		); err != nil {
+			return nil, err
+		}
+
+		list = append(list, activity)
+	}
+
+	if err := rows.Err(); err != nil {
+		return nil, err
+	}
+
+	return list, nil
+}
diff --git a/store/db/postgres/collection.go b/store/db/postgres/collection.go
new file mode 100644
index 00000000..665e17ec
--- /dev/null
+++ b/store/db/postgres/collection.go
@@ -0,0 +1,194 @@
+package postgres
+
+import (
+	"context"
+	"database/sql"
+	"fmt"
+	"strings"
+
+	"github.com/pkg/errors"
+
+	"github.com/yourselfhosted/slash/internal/util"
+	storepb "github.com/yourselfhosted/slash/proto/gen/store"
+	"github.com/yourselfhosted/slash/store"
+)
+
+func (d *DB) CreateCollection(ctx context.Context, create *storepb.Collection) (*storepb.Collection, error) {
+	set := []string{"creator_id", "name", "title", "description", "shortcut_ids", "visibility"}
+	args := []any{create.CreatorId, create.Name, create.Title, create.Description, strings.Trim(strings.Join(strings.Fields(fmt.Sprint(create.ShortcutIds)), ","), "[]"), create.Visibility.String()}
+	placeholder := []string{"$1", "$2", "$3", "$4", "$5", "$6"}
+
+	stmt := `
+		INSERT INTO collection (
+			` + strings.Join(set, ", ") + `
+		)
+		VALUES (` + strings.Join(placeholder, ",") + `)
+		RETURNING id, created_ts, updated_ts
+	`
+	if err := d.db.QueryRowContext(ctx, stmt, args...).Scan(
+		&create.Id,
+		&create.CreatedTs,
+		&create.UpdatedTs,
+	); err != nil {
+		return nil, err
+	}
+	collection := create
+	return collection, nil
+}
+
+func (d *DB) UpdateCollection(ctx context.Context, update *store.UpdateCollection) (*storepb.Collection, error) {
+	set, args := []string{}, []any{}
+	if update.Name != nil {
+		set, args = append(set, "name = $1"), append(args, *update.Name)
+	}
+	if update.Title != nil {
+		set, args = append(set, "title = $2"), append(args, *update.Title)
+	}
+	if update.Description != nil {
+		set, args = append(set, "description = $3"), append(args, *update.Description)
+	}
+	if update.ShortcutIDs != nil {
+		set, args = append(set, "shortcut_ids = $4"), append(args, strings.Trim(strings.Join(strings.Fields(fmt.Sprint(update.ShortcutIDs)), ","), "[]"))
+	}
+	if update.Visibility != nil {
+		set, args = append(set, "visibility = $5"), append(args, update.Visibility.String())
+	}
+	if len(set) == 0 {
+		return nil, errors.New("no update specified")
+	}
+	args = append(args, update.ID)
+
+	stmt := `
+		UPDATE collection
+		SET
+			` + strings.Join(set, ", ") + `
+		WHERE
+			id = $6
+		RETURNING id, creator_id, created_ts, updated_ts, name, title, description, shortcut_ids, visibility
+	`
+	collection := &storepb.Collection{}
+	var shortcutIDs, visibility string
+	if err := d.db.QueryRowContext(ctx, stmt, args...).Scan(
+		&collection.Id,
+		&collection.CreatorId,
+		&collection.CreatedTs,
+		&collection.UpdatedTs,
+		&collection.Name,
+		&collection.Title,
+		&collection.Description,
+		&shortcutIDs,
+		&visibility,
+	); err != nil {
+		return nil, err
+	}
+
+	collection.ShortcutIds = []int32{}
+	if shortcutIDs != "" {
+		for _, idStr := range strings.Split(shortcutIDs, ",") {
+			shortcutID, err := util.ConvertStringToInt32(idStr)
+			if err != nil {
+				return nil, errors.Wrap(err, "failed to convert shortcut id")
+			}
+			collection.ShortcutIds = append(collection.ShortcutIds, shortcutID)
+		}
+	}
+	collection.Visibility = convertVisibilityStringToStorepb(visibility)
+	return collection, nil
+}
+
+func (d *DB) ListCollections(ctx context.Context, find *store.FindCollection) ([]*storepb.Collection, error) {
+	where, args := []string{"1 = 1"}, []any{}
+	if v := find.ID; v != nil {
+		where, args = append(where, "id = $1"), append(args, *v)
+	}
+	if v := find.CreatorID; v != nil {
+		where, args = append(where, "creator_id = $2"), append(args, *v)
+	}
+	if v := find.Name; v != nil {
+		where, args = append(where, "name = $3"), append(args, *v)
+	}
+	if v := find.VisibilityList; len(v) != 0 {
+		list := []string{}
+		for i, visibility := range v {
+			list = append(list, fmt.Sprintf("$%d", len(args)+i+1))
+			args = append(args, visibility)
+		}
+		where = append(where, fmt.Sprintf("visibility IN (%s)", strings.Join(list, ",")))
+	}
+
+	rows, err := d.db.QueryContext(ctx, `
+		SELECT
+			id,
+			creator_id,
+			created_ts,
+			updated_ts,
+			name,
+			title,
+			description,
+			shortcut_ids,
+			visibility
+		FROM collection
+		WHERE `+strings.Join(where, " AND ")+`
+		ORDER BY created_ts DESC`,
+		args...,
+	)
+	if err != nil {
+		return nil, err
+	}
+	defer rows.Close()
+
+	list := make([]*storepb.Collection, 0)
+	for rows.Next() {
+		collection := &storepb.Collection{}
+		var shortcutIDs, visibility string
+		if err := rows.Scan(
+			&collection.Id,
+			&collection.CreatorId,
+			&collection.CreatedTs,
+			&collection.UpdatedTs,
+			&collection.Name,
+			&collection.Title,
+			&collection.Description,
+			&shortcutIDs,
+			&visibility,
+		); err != nil {
+			return nil, err
+		}
+
+		collection.ShortcutIds = []int32{}
+		if shortcutIDs != "" {
+			for _, idStr := range strings.Split(shortcutIDs, ",") {
+				shortcutID, err := util.ConvertStringToInt32(idStr)
+				if err != nil {
+					return nil, errors.Wrap(err, "failed to convert shortcut id")
+				}
+				collection.ShortcutIds = append(collection.ShortcutIds, shortcutID)
+			}
+		}
+		collection.Visibility = storepb.Visibility(storepb.Visibility_value[visibility])
+		list = append(list, collection)
+	}
+
+	if err := rows.Err(); err != nil {
+		return nil, err
+	}
+	return list, nil
+}
+
+func (d *DB) DeleteCollection(ctx context.Context, delete *store.DeleteCollection) error {
+	if _, err := d.db.ExecContext(ctx, `DELETE FROM collection WHERE id = $1`, delete.ID); err != nil {
+		return err
+	}
+
+	return nil
+}
+
+func vacuumCollection(ctx context.Context, tx *sql.Tx) error {
+	stmt := `DELETE FROM collection WHERE creator_id NOT IN (SELECT id FROM user)`
+	_, err := tx.ExecContext(ctx, stmt)
+	if err != nil {
+		return err
+	}
+
+	return nil
+}
diff --git a/store/db/postgres/memo.go b/store/db/postgres/memo.go
new file mode 100644
index 00000000..aa0cf377
--- /dev/null
+++ b/store/db/postgres/memo.go
@@ -0,0 +1,208 @@
+package postgres
+
+import (
+	"context"
+	"database/sql"
+	"fmt"
+	"strings"
+
+	"github.com/pkg/errors"
+
+	storepb "github.com/yourselfhosted/slash/proto/gen/store"
+	"github.com/yourselfhosted/slash/store"
+)
+
+func (d *DB) CreateMemo(ctx context.Context, create *storepb.Memo) (*storepb.Memo, error) {
+	set := []string{"creator_id", "name", "title", "content", "visibility", "tag"}
+	args := []any{create.CreatorId, create.Name, create.Title, create.Content, create.Visibility.String(), strings.Join(create.Tags, " ")}
+
+	stmt := `
+		INSERT INTO memo (
+			` + strings.Join(set, ", ") + `
+		)
+		VALUES (` + placeholders(len(args)) + `)
+		RETURNING id, created_ts, updated_ts, row_status
+	`
+
+	var rowStatus string
+	if err := d.db.QueryRowContext(ctx, stmt, args...).Scan(
+		&create.Id,
+		&create.CreatedTs,
+		&create.UpdatedTs,
+		&rowStatus,
+	); err != nil {
+		return nil, err
+	}
+	create.RowStatus = store.ConvertRowStatusStringToStorepb(rowStatus)
+	memo := create
+	return memo, nil
+}
+
+func (d *DB) UpdateMemo(ctx context.Context, update *store.UpdateMemo) (*storepb.Memo, error) {
+	set, args := []string{}, []any{}
+	if update.RowStatus != nil {
+		set = append(set, fmt.Sprintf("row_status = $%d", len(set)+1))
+		args = append(args, update.RowStatus.String())
+	}
+	if update.Name != nil {
+		set = append(set, fmt.Sprintf("name = $%d", len(set)+1))
+		args = append(args, *update.Name)
+	}
+	if update.Title != nil {
+		set = append(set, fmt.Sprintf("title = $%d", len(set)+1))
+		args = append(args, *update.Title)
+	}
+	if update.Content != nil {
+		set = append(set, fmt.Sprintf("content = $%d", len(set)+1))
+		args = append(args, *update.Content)
+	}
+	if update.Visibility != nil {
+		set = append(set, fmt.Sprintf("visibility = $%d", len(set)+1))
+		args = append(args, update.Visibility.String())
+	}
+	if update.Tag != nil {
+		set = append(set, fmt.Sprintf("tag = $%d", len(set)+1))
+		args = append(args, *update.Tag)
+	}
+	if len(set) == 0 {
+		return nil, errors.New("no update specified")
+	}
+	args = append(args, update.ID)
+
+	stmt := `
+		UPDATE memo
+		SET
+			` + strings.Join(set, ", ") + `
+		WHERE
+			id = $` + fmt.Sprint(len(set)+1) + `
+		RETURNING id, creator_id, created_ts, updated_ts, row_status, name, title, content, visibility, tag
+	`
+
+	memo := &storepb.Memo{}
+	var rowStatus, visibility, tags string
+	if err := d.db.QueryRowContext(ctx, stmt, args...).Scan(
+		&memo.Id,
+		&memo.CreatorId,
+		&memo.CreatedTs,
+		&memo.UpdatedTs,
+		&rowStatus,
+		&memo.Name,
+		&memo.Title,
+		&memo.Content,
+		&visibility,
+		&tags,
+	); err != nil {
+		return nil, err
+	}
+	memo.RowStatus = store.ConvertRowStatusStringToStorepb(rowStatus)
+	memo.Visibility = convertVisibilityStringToStorepb(visibility)
+	memo.Tags = filterTags(strings.Split(tags, " "))
+	return memo, nil
+}
+
+func (d *DB) ListMemos(ctx context.Context, find *store.FindMemo) ([]*storepb.Memo, error) {
+	where, args := []string{"1 = 1"}, []any{}
+	if v := find.ID; v != nil {
+		where, args = append(where, "id = $1"), append(args, *v)
+	}
+	if v := find.CreatorID; v != nil {
+		where, args = append(where, "creator_id = $2"), append(args, *v)
+	}
+	if v := find.RowStatus; v != nil {
+		where, args = append(where, "row_status = $3"), append(args, *v)
+	}
+	if v := find.Name; v != nil {
+		where, args = append(where, "name = $4"), append(args, *v)
+	}
+	if v := find.VisibilityList; len(v) != 0 {
+		list := []string{}
+		for i, visibility := range v {
+			list = append(list, fmt.Sprintf("$%d", len(args)+i+1))
+			args = append(args, visibility)
+		}
+		where = append(where, fmt.Sprintf("visibility IN (%s)", strings.Join(list, ",")))
+	}
+	if v := find.Tag; v != nil {
+		where, args = append(where, "tag LIKE $"+fmt.Sprint(len(args)+1)), append(args, "%"+*v+"%")
+	}
+
+	rows, err := d.db.QueryContext(ctx, `
+		SELECT
+			id,
+			creator_id,
+			created_ts,
+			updated_ts,
+			row_status,
+			name,
+			title,
+			content,
+			visibility,
+			tag
+		FROM memo
+		WHERE `+strings.Join(where, " AND ")+`
+		ORDER BY created_ts DESC`,
+		args...,
+	)
+	if err != nil {
+		return nil, err
+	}
+	defer rows.Close()
+
+	list := make([]*storepb.Memo, 0)
+	for rows.Next() {
+		memo := &storepb.Memo{}
+		var rowStatus, visibility, tags string
+		if err := rows.Scan(
+			&memo.Id,
+			&memo.CreatorId,
+			&memo.CreatedTs,
+			&memo.UpdatedTs,
+			&rowStatus,
+			&memo.Name,
+			&memo.Title,
+			&memo.Content,
+			&visibility,
+			&tags,
+		); err != nil {
+			return nil, err
+		}
+		memo.RowStatus = store.ConvertRowStatusStringToStorepb(rowStatus)
+		memo.Visibility = storepb.Visibility(storepb.Visibility_value[visibility])
+		memo.Tags = filterTags(strings.Split(tags, " "))
+		list = append(list, memo)
+	}
+
+	if err := rows.Err(); err != nil {
+		return nil, err
+	}
+	return list, nil
+}
+
+func (d *DB) DeleteMemo(ctx context.Context, delete *store.DeleteMemo) error {
+	if _, err := d.db.ExecContext(ctx, `DELETE FROM memo WHERE id = $1`, delete.ID); err != nil {
+		return err
+	}
+	return nil
+}
+
+func vacuumMemo(ctx context.Context, tx *sql.Tx) error {
+	stmt := `DELETE FROM memo WHERE creator_id NOT IN (SELECT id FROM user)`
+	_, err := tx.ExecContext(ctx, stmt)
+	if err != nil {
+		return err
+	}
+
+	return nil
+}
+
+func placeholders(n int) string {
+	placeholder := ""
+	for i := 0; i < n; i++ {
+		if i == 0 {
+			placeholder = fmt.Sprintf("$%d", i+1)
+		} else {
+			placeholder = fmt.Sprintf("%s, $%d", placeholder, i+1)
+		}
+	}
+	return placeholder
+}
diff --git a/store/db/postgres/migration/dev/LATEST__SCHEMA.sql b/store/db/postgres/migration/dev/LATEST__SCHEMA.sql
new file mode 100644
index 00000000..b8a257a9
--- /dev/null
+++ b/store/db/postgres/migration/dev/LATEST__SCHEMA.sql
@@ -0,0 +1,92 @@
+-- migration_history
+CREATE TABLE migration_history (
+  version TEXT NOT NULL PRIMARY KEY,
+  created_ts BIGINT NOT NULL DEFAULT EXTRACT(EPOCH FROM NOW())
+);
+
+-- workspace_setting
+CREATE TABLE workspace_setting (
+  key TEXT NOT NULL UNIQUE,
+  value TEXT NOT NULL
+);
+
+-- user
+CREATE TABLE user (
+  id SERIAL PRIMARY KEY,
+  created_ts BIGINT NOT NULL DEFAULT EXTRACT(EPOCH FROM NOW()),
+  updated_ts BIGINT NOT NULL DEFAULT EXTRACT(EPOCH FROM NOW()),
+  row_status TEXT NOT NULL CHECK (row_status IN ('NORMAL', 'ARCHIVED')) DEFAULT 'NORMAL',
+  email TEXT NOT NULL UNIQUE,
+  nickname TEXT NOT NULL,
+  password_hash TEXT NOT NULL,
+  role TEXT NOT NULL CHECK (role IN ('ADMIN', 'USER')) DEFAULT 'USER'
+);
+
+CREATE INDEX idx_user_email ON user(email);
+
+-- user_setting
+CREATE TABLE user_setting (
+  user_id INTEGER REFERENCES user(id) NOT NULL,
+  key TEXT NOT NULL,
+  value TEXT NOT NULL,
+  PRIMARY KEY (user_id, key)
+);
+
+-- shortcut
+CREATE TABLE shortcut (
+  id SERIAL PRIMARY KEY,
+  creator_id INTEGER REFERENCES user(id) NOT NULL,
+  created_ts BIGINT NOT NULL DEFAULT EXTRACT(EPOCH FROM NOW()),
+  updated_ts BIGINT NOT NULL DEFAULT EXTRACT(EPOCH FROM NOW()),
+  row_status TEXT NOT NULL CHECK (row_status IN ('NORMAL', 'ARCHIVED')) DEFAULT 'NORMAL',
+  name TEXT NOT NULL UNIQUE,
+  link TEXT NOT NULL,
+  title TEXT NOT NULL DEFAULT '',
+  description TEXT NOT NULL DEFAULT '',
+  visibility TEXT NOT NULL CHECK (visibility IN ('PRIVATE', 'WORKSPACE', 'PUBLIC')) DEFAULT 'PRIVATE',
+  tag TEXT NOT NULL DEFAULT '',
+  og_metadata TEXT NOT NULL DEFAULT '{}'
+);
+
+CREATE INDEX idx_shortcut_name ON shortcut(name);
+
+-- activity
+CREATE TABLE activity (
+  id SERIAL PRIMARY KEY,
+  creator_id INTEGER REFERENCES user(id) NOT NULL,
+  created_ts BIGINT NOT NULL DEFAULT EXTRACT(EPOCH FROM NOW()),
+  type TEXT NOT NULL DEFAULT '',
+  level TEXT NOT NULL CHECK (level IN ('INFO', 'WARN', 'ERROR')) DEFAULT 'INFO',
+  payload TEXT NOT NULL DEFAULT '{}'
+);
+
+-- collection
+CREATE TABLE collection (
+  id SERIAL PRIMARY KEY,
+  creator_id INTEGER REFERENCES user(id) NOT NULL,
+  created_ts BIGINT NOT NULL DEFAULT EXTRACT(EPOCH FROM NOW()),
+  updated_ts BIGINT NOT NULL DEFAULT EXTRACT(EPOCH FROM NOW()),
+  name TEXT NOT NULL UNIQUE,
+  title TEXT NOT NULL DEFAULT '',
+  description TEXT NOT NULL DEFAULT '',
+  shortcut_ids INTEGER ARRAY NOT NULL,
+  visibility TEXT NOT NULL CHECK (visibility IN ('PRIVATE', 'WORKSPACE', 'PUBLIC')) DEFAULT 'PRIVATE'
+);
+
+CREATE INDEX idx_collection_name ON collection(name);
+
+-- memo
+CREATE TABLE memo (
+  id SERIAL PRIMARY KEY,
+  creator_id INTEGER REFERENCES user(id) NOT NULL,
+  created_ts BIGINT NOT NULL DEFAULT EXTRACT(EPOCH FROM NOW()),
+  updated_ts BIGINT NOT NULL DEFAULT EXTRACT(EPOCH FROM NOW()),
+  row_status TEXT NOT NULL CHECK (row_status IN ('NORMAL', 'ARCHIVED')) DEFAULT 'NORMAL',
+  name TEXT NOT NULL UNIQUE,
+  title TEXT NOT NULL DEFAULT '',
+  content TEXT NOT NULL DEFAULT '',
+  visibility TEXT NOT NULL CHECK (visibility IN ('PRIVATE', 'WORKSPACE', 'PUBLIC')) DEFAULT 'PRIVATE',
+  tag TEXT NOT NULL DEFAULT ''
+);
+
+CREATE INDEX idx_memo_name ON memo(name);
diff --git a/store/db/postgres/migration/prod/LATEST__SCHEMA.sql b/store/db/postgres/migration/prod/LATEST__SCHEMA.sql
new file mode 100644
index 00000000..b8a257a9
--- /dev/null
+++ b/store/db/postgres/migration/prod/LATEST__SCHEMA.sql
@@ -0,0 +1,92 @@
+-- migration_history
+CREATE TABLE migration_history (
+  version TEXT NOT NULL PRIMARY KEY,
+  created_ts BIGINT NOT NULL DEFAULT EXTRACT(EPOCH FROM NOW())
+);
+
+-- workspace_setting
+CREATE TABLE workspace_setting (
+  key TEXT NOT NULL UNIQUE,
+  value TEXT NOT NULL
+);
+
+-- user
+CREATE TABLE user (
+  id SERIAL PRIMARY KEY,
+  created_ts BIGINT NOT NULL DEFAULT EXTRACT(EPOCH FROM NOW()),
+  updated_ts BIGINT NOT NULL DEFAULT EXTRACT(EPOCH FROM NOW()),
+  row_status TEXT NOT NULL CHECK (row_status IN ('NORMAL', 'ARCHIVED')) DEFAULT 'NORMAL',
+  email TEXT NOT NULL UNIQUE,
+  nickname TEXT NOT NULL,
+  password_hash TEXT NOT NULL,
+  role TEXT NOT NULL CHECK (role IN ('ADMIN', 'USER')) DEFAULT 'USER'
+);
+
+CREATE INDEX idx_user_email ON user(email);
+
+-- user_setting
+CREATE TABLE user_setting (
+  user_id INTEGER REFERENCES user(id) NOT NULL,
+  key TEXT NOT NULL,
+  value TEXT NOT NULL,
+  PRIMARY KEY (user_id, key)
+);
+
+-- shortcut
+CREATE TABLE shortcut (
+  id SERIAL PRIMARY KEY,
+  creator_id INTEGER REFERENCES user(id) NOT NULL,
+  created_ts BIGINT NOT NULL DEFAULT EXTRACT(EPOCH FROM NOW()),
+  updated_ts BIGINT NOT NULL DEFAULT EXTRACT(EPOCH FROM NOW()),
+  row_status TEXT NOT NULL CHECK (row_status IN ('NORMAL', 'ARCHIVED')) DEFAULT 'NORMAL',
+  name TEXT NOT NULL UNIQUE,
+  link TEXT NOT NULL,
+  title TEXT NOT NULL DEFAULT '',
+  description TEXT NOT NULL DEFAULT '',
+  visibility TEXT NOT NULL CHECK (visibility IN ('PRIVATE', 'WORKSPACE', 'PUBLIC')) DEFAULT 'PRIVATE',
+  tag TEXT NOT NULL DEFAULT '',
+  og_metadata TEXT NOT NULL DEFAULT '{}'
+);
+
+CREATE INDEX idx_shortcut_name ON shortcut(name);
+
+-- activity
+CREATE TABLE activity (
+  id SERIAL PRIMARY KEY,
+  creator_id INTEGER REFERENCES user(id) NOT NULL,
+  created_ts BIGINT NOT NULL DEFAULT EXTRACT(EPOCH FROM NOW()),
+  type TEXT NOT NULL DEFAULT '',
+  level TEXT NOT NULL CHECK (level IN ('INFO', 'WARN', 'ERROR')) DEFAULT 'INFO',
+  payload TEXT NOT NULL DEFAULT '{}'
+);
+
+-- collection
+CREATE TABLE collection (
+  id SERIAL PRIMARY KEY,
+  creator_id INTEGER REFERENCES user(id) NOT NULL,
+  created_ts BIGINT NOT NULL DEFAULT EXTRACT(EPOCH FROM NOW()),
+  updated_ts BIGINT NOT NULL DEFAULT EXTRACT(EPOCH FROM NOW()),
+  name TEXT NOT NULL UNIQUE,
+  title TEXT NOT NULL DEFAULT '',
+  description TEXT NOT NULL DEFAULT '',
+  shortcut_ids INTEGER ARRAY NOT NULL,
+  visibility TEXT NOT NULL CHECK (visibility IN ('PRIVATE', 'WORKSPACE', 'PUBLIC')) DEFAULT 'PRIVATE'
+);
+
+CREATE INDEX idx_collection_name ON collection(name);
+
+-- memo
+CREATE TABLE memo (
+  id SERIAL PRIMARY KEY,
+  creator_id INTEGER REFERENCES user(id) NOT NULL,
+  created_ts BIGINT NOT NULL DEFAULT EXTRACT(EPOCH FROM NOW()),
+  updated_ts BIGINT NOT NULL DEFAULT EXTRACT(EPOCH FROM NOW()),
+  row_status TEXT NOT NULL CHECK (row_status IN ('NORMAL', 'ARCHIVED')) DEFAULT 'NORMAL',
+  name TEXT NOT NULL UNIQUE,
+  title TEXT NOT NULL DEFAULT '',
+  content TEXT NOT NULL DEFAULT '',
+  visibility TEXT NOT NULL CHECK (visibility IN ('PRIVATE', 'WORKSPACE', 'PUBLIC')) DEFAULT 'PRIVATE',
+  tag TEXT NOT NULL DEFAULT ''
+);
+
+CREATE INDEX idx_memo_name ON memo(name);
diff --git a/store/db/postgres/migration_history.go b/store/db/postgres/migration_history.go
new file mode 100644
index 00000000..0d7c6e49
--- /dev/null
+++ b/store/db/postgres/migration_history.go
@@ -0,0 +1,57 @@
+package postgres
+
+import (
+	"context"
+
+	"github.com/yourselfhosted/slash/store"
+)
+
+func (d *DB) UpsertMigrationHistory(ctx context.Context, upsert *store.UpsertMigrationHistory) (*store.MigrationHistory, error) {
+	stmt := `
+		INSERT INTO migration_history (
+			version
+		)
+		VALUES ($1)
+		ON CONFLICT(version) DO UPDATE
+		SET
+			version=EXCLUDED.version
+		RETURNING version, created_ts
+	`
+	var migrationHistory store.MigrationHistory
+	if err := d.db.QueryRowContext(ctx, stmt, upsert.Version).Scan(
+		&migrationHistory.Version,
+		&migrationHistory.CreatedTs,
+	); err != nil {
+		return nil, err
+	}
+
+	return &migrationHistory, nil
+}
+
+func (d *DB) ListMigrationHistories(ctx context.Context, _ *store.FindMigrationHistory) ([]*store.MigrationHistory, error) {
+	query := "SELECT version, created_ts FROM migration_history ORDER BY created_ts DESC"
+	rows, err := d.db.QueryContext(ctx, query)
+	if err != nil {
+		return nil, err
+	}
+	defer rows.Close()
+
+	list := make([]*store.MigrationHistory, 0)
+	for rows.Next() {
+		var migrationHistory store.MigrationHistory
+		if err := rows.Scan(
+			&migrationHistory.Version,
+			&migrationHistory.CreatedTs,
+		); err != nil {
+			return nil, err
+		}
+
+		list = append(list, &migrationHistory)
+	}
+
+	if err := rows.Err(); err != nil {
+		return nil, err
+	}
+
+	return list, nil
+}
diff --git a/store/db/postgres/migrator.go b/store/db/postgres/migrator.go
new file mode 100644
index 00000000..724e1b1b
--- /dev/null
+++ b/store/db/postgres/migrator.go
@@ -0,0 +1,233 @@
+package postgres
+
+import (
+	"context"
+	"embed"
+	"fmt"
+	"io/fs"
+	"os"
+	"regexp"
+	"sort"
+	"time"
+
+	"github.com/pkg/errors"
+
+	"github.com/yourselfhosted/slash/server/version"
+	"github.com/yourselfhosted/slash/store"
+)
+
+//go:embed migration
+var migrationFS embed.FS
+
+//go:embed seed
+var seedFS embed.FS
+
+// Migrate applies the latest schema to the database.
+func (d *DB) Migrate(ctx context.Context) error {
+	currentVersion := version.GetCurrentVersion(d.profile.Mode)
+	if d.profile.Mode == "prod" {
+		_, err := os.Stat(d.profile.DSN)
+		if err != nil {
+			// If db file not exists, we should create a new one with latest schema.
+			if errors.Is(err, os.ErrNotExist) {
+				if err := d.applyLatestSchema(ctx); err != nil {
+					return errors.Wrap(err, "failed to apply latest schema")
+				}
+				// Upsert the newest version to migration_history.
+				if _, err := d.UpsertMigrationHistory(ctx, &store.UpsertMigrationHistory{
+					Version: currentVersion,
+				}); err != nil {
+					return errors.Wrap(err, "failed to upsert migration history")
+				}
+			} else {
+				return errors.Wrap(err, "failed to get db file stat")
+			}
+		} else {
+			// If db file exists, we should check if we need to migrate the database.
+			migrationHistoryList, err := d.ListMigrationHistories(ctx, &store.FindMigrationHistory{})
+			if err != nil {
+				return errors.Wrap(err, "failed to find migration history")
+			}
+			// If no migration history, we should apply the latest version migration and upsert the migration history.
+			if len(migrationHistoryList) == 0 {
+				minorVersion := version.GetMinorVersion(currentVersion)
+				if err := d.applyMigrationForMinorVersion(ctx, minorVersion); err != nil {
+					return errors.Wrapf(err, "failed to apply version %s migration", minorVersion)
+				}
+				_, err := d.UpsertMigrationHistory(ctx, &store.UpsertMigrationHistory{
+					Version: currentVersion,
+				})
+				if err != nil {
+					return errors.Wrap(err, "failed to upsert migration history")
+				}
+				return nil
+			}
+
+			migrationHistoryVersionList := []string{}
+			for _, migrationHistory := range migrationHistoryList {
+				migrationHistoryVersionList = append(migrationHistoryVersionList, migrationHistory.Version)
+			}
+			sort.Sort(version.SortVersion(migrationHistoryVersionList))
+			latestMigrationHistoryVersion := migrationHistoryVersionList[len(migrationHistoryVersionList)-1]
+
+			if version.IsVersionGreaterThan(version.GetSchemaVersion(currentVersion), latestMigrationHistoryVersion) {
+				minorVersionList := getMinorVersionList()
+				// backup the raw database file before migration
+				rawBytes, err := os.ReadFile(d.profile.DSN)
+				if err != nil {
+					return errors.Wrap(err, "failed to read raw database file")
+				}
+				backupDBFilePath := fmt.Sprintf("%s/memos_%s_%d_backup.db", d.profile.Data, d.profile.Version, time.Now().Unix())
+				if err := os.WriteFile(backupDBFilePath, rawBytes, 0644); err != nil {
+					return errors.Wrap(err, "failed to write raw database file")
+				}
+				println("succeed to copy a backup database file")
+				println("start migrate")
+				for _, minorVersion := range minorVersionList {
+					normalizedVersion := minorVersion + ".0"
+					if version.IsVersionGreaterThan(normalizedVersion, latestMigrationHistoryVersion) && version.IsVersionGreaterOrEqualThan(currentVersion, normalizedVersion) {
+						println("applying migration for", normalizedVersion)
+						if err := d.applyMigrationForMinorVersion(ctx, minorVersion); err != nil {
+							return errors.Wrap(err, "failed to apply minor version migration")
+						}
+					}
+				}
+				println("end migrate")
+
+				// remove the created backup db file after migrate succeed
+				if err := os.Remove(backupDBFilePath); err != nil {
+					println(fmt.Sprintf("Failed to remove temp database file, err %v", err))
+				}
+			}
+		}
+	} else {
+		// In non-prod mode, we should always migrate the database.
+		if _, err := os.Stat(d.profile.DSN); errors.Is(err, os.ErrNotExist) {
+			if err := d.applyLatestSchema(ctx); err != nil {
+				return errors.Wrap(err, "failed to apply latest schema")
+			}
+			// In demo mode, we should seed the database.
+			if d.profile.Mode == "demo" {
+				if err := d.seed(ctx); err != nil {
+					return errors.Wrap(err, "failed to seed")
+				}
+			}
+		}
+	}
+
+	return nil
+}
+
+const (
+	latestSchemaFileName = "LATEST__SCHEMA.sql"
+)
+
+func (d *DB) applyLatestSchema(ctx context.Context) error {
+	schemaMode := "dev"
+	if d.profile.Mode == "prod" {
+		schemaMode = "prod"
+	}
+	latestSchemaPath := fmt.Sprintf("migration/%s/%s", schemaMode, latestSchemaFileName)
+	buf, err := migrationFS.ReadFile(latestSchemaPath)
+	if err != nil {
+		return errors.Wrapf(err, "failed to read latest schema %q", latestSchemaPath)
+	}
+	stmt := string(buf)
+	if err := d.execute(ctx, stmt); err != nil {
+		return errors.Wrapf(err, "migrate error: %s", stmt)
+	}
+	return nil
+}
+
+func (d *DB) applyMigrationForMinorVersion(ctx context.Context, minorVersion string) error {
+	filenames, err := fs.Glob(migrationFS, fmt.Sprintf("%s/%s/*.sql", "migration/prod", minorVersion))
+	if err != nil {
+		return errors.Wrap(err, "failed to read ddl files")
+	}
+
+	sort.Strings(filenames)
+	migrationStmt := ""
+
+	// Loop over all migration files and execute them in order.
+	for _, filename := range filenames {
+		buf, err := migrationFS.ReadFile(filename)
+		if err != nil {
+			return errors.Wrapf(err, "failed to read minor version migration file, filename=%s", filename)
+		}
+		stmt := string(buf)
+		migrationStmt += stmt
+		if err := d.execute(ctx, stmt); err != nil {
+			return errors.Wrapf(err, "migrate error: %s", stmt)
+		}
+	}
+
+	// Upsert the newest version to migration_history.
+	version := minorVersion + ".0"
+	if _, err = d.UpsertMigrationHistory(ctx, &store.UpsertMigrationHistory{
+		Version: version,
+	}); err != nil {
+		return errors.Wrapf(err, "failed to upsert migration history with version: %s", version)
+	}
+
+	return nil
+}
+
+func (d *DB) seed(ctx context.Context) error {
+	filenames, err := fs.Glob(seedFS, fmt.Sprintf("%s/*.sql", "seed"))
+	if err != nil {
+		return errors.Wrap(err, "failed to read seed files")
+	}
+
+	sort.Strings(filenames)
+
+	// Loop over all seed files and execute them in order.
+	for _, filename := range filenames {
+		buf, err := seedFS.ReadFile(filename)
+		if err != nil {
+			return errors.Wrapf(err, "failed to read seed file, filename=%s", filename)
+		}
+		stmt := string(buf)
+		if err := d.execute(ctx, stmt); err != nil {
+			return errors.Wrapf(err, "seed error: %s", stmt)
+		}
+	}
+	return nil
+}
+
+// execute runs a single SQL statement within a transaction.
+func (d *DB) execute(ctx context.Context, stmt string) error {
+	tx, err := d.db.Begin()
+	if err != nil {
+		return err
+	}
+	defer tx.Rollback()
+
+	if _, err := tx.ExecContext(ctx, stmt); err != nil {
+		return errors.Wrap(err, "failed to execute statement")
+	}
+
+	return tx.Commit()
+}
+
+// minorDirRegexp is a regular expression for minor version directory.
+var minorDirRegexp = regexp.MustCompile(`^migration/prod/[0-9]+\.[0-9]+$`)
+
+func getMinorVersionList() []string {
+	minorVersionList := []string{}
+
+	if err := fs.WalkDir(migrationFS, "migration", func(path string, file fs.DirEntry, err error) error {
+		if err != nil {
+			return err
+		}
+		if file.IsDir() && minorDirRegexp.MatchString(path) {
+			minorVersionList = append(minorVersionList, file.Name())
+		}
+
+		return nil
+	}); err != nil {
+		panic(err)
+	}
+
+	sort.Sort(version.SortVersion(minorVersionList))
+	return minorVersionList
+}
diff --git a/store/db/postgres/postgres.go b/store/db/postgres/postgres.go
new file mode 100644
index 00000000..6bcc319b
--- /dev/null
+++ b/store/db/postgres/postgres.go
@@ -0,0 +1,45 @@
+package postgres
+
+import (
+	"database/sql"
+	"log"
+
+	// Import the PostgreSQL driver.
+	_ "github.com/lib/pq"
+	"github.com/pkg/errors"
+
+	"github.com/yourselfhosted/slash/server/profile"
+	"github.com/yourselfhosted/slash/store"
+)
+
+type DB struct {
+	db      *sql.DB
+	profile *profile.Profile
+}
+
+func NewDB(profile *profile.Profile) (store.Driver, error) {
+	if profile == nil {
+		return nil, errors.New("profile is nil")
+	}
+
+	// Open the PostgreSQL connection
+	db, err := sql.Open("postgres", profile.DSN)
+	if err != nil {
+		log.Printf("Failed to open database: %s", err)
+		return nil, errors.Wrapf(err, "failed to open database: %s", profile.DSN)
+	}
+
+	var driver store.Driver = &DB{
+		db:      db,
+		profile: profile,
+	}
+	return driver, nil
+}
+
+func (d *DB) GetDB() *sql.DB {
+	return d.db
+}
+
+func (d *DB) Close() error {
+	return d.db.Close()
+}
diff --git a/store/db/postgres/seed/10000__reset.sql b/store/db/postgres/seed/10000__reset.sql
new file mode 100644
index 00000000..79be1d8a
--- /dev/null
+++ b/store/db/postgres/seed/10000__reset.sql
@@ -0,0 +1,9 @@
+DELETE FROM activity;
+
+DELETE FROM shortcut;
+
+DELETE FROM user_setting;
+
+DELETE FROM user;
+
+DELETE FROM workspace_setting;
diff --git a/store/db/postgres/shortcut.go b/store/db/postgres/shortcut.go
new file mode 100644
index 00000000..821898df
--- /dev/null
+++ b/store/db/postgres/shortcut.go
@@ -0,0 +1,228 @@
+package postgres
+
+import (
+	"context"
+	"database/sql"
+	"fmt"
+	"strings"
+
+	"github.com/pkg/errors"
+	"google.golang.org/protobuf/encoding/protojson"
+
+	storepb "github.com/yourselfhosted/slash/proto/gen/store"
+	"github.com/yourselfhosted/slash/store"
+)
+
+func (d *DB) CreateShortcut(ctx context.Context, create *storepb.Shortcut) (*storepb.Shortcut, error) {
+	set := []string{"creator_id", "name", "link", "title", "description", "visibility", "tag"}
+	args := []any{create.CreatorId, create.Name, create.Link, create.Title, create.Description, create.Visibility.String(), strings.Join(create.Tags, " ")}
+	if create.OgMetadata != nil {
+		set = append(set, "og_metadata")
+		openGraphMetadataBytes, err := protojson.Marshal(create.OgMetadata)
+		if err != nil {
+			return nil, err
+		}
+		args = append(args, string(openGraphMetadataBytes))
+	}
+
+	stmt := fmt.Sprintf(`
+		INSERT INTO shortcut (%s)
+		VALUES (%s)
+		RETURNING id, created_ts, updated_ts, row_status
+	`, strings.Join(set, ","), placeholders(len(args)))
+
+	var rowStatus string
+	if err := d.db.QueryRowContext(ctx, stmt, args...).Scan(
+		&create.Id,
+		&create.CreatedTs,
+		&create.UpdatedTs,
+		&rowStatus,
+	); err != nil {
+		return nil, err
+	}
+	create.RowStatus = store.ConvertRowStatusStringToStorepb(rowStatus)
+	shortcut := create
+	return shortcut, nil
+}
+
+func (d *DB) UpdateShortcut(ctx context.Context, update *store.UpdateShortcut) (*storepb.Shortcut, error) {
+	set, args := []string{}, []any{}
+	if update.RowStatus != nil {
+		set, args = append(set, fmt.Sprintf("row_status = $%d", len(args)+1)), append(args, update.RowStatus.String())
+	}
+	if update.Name != nil {
+		set, args = append(set, fmt.Sprintf("name = $%d", len(args)+1)), append(args, *update.Name)
+	}
+	if update.Link != nil {
+		set, args = append(set, fmt.Sprintf("link = $%d", len(args)+1)), append(args, *update.Link)
+	}
+	if update.Title != nil {
+		set, args = append(set, fmt.Sprintf("title = $%d", len(args)+1)), append(args, *update.Title)
+	}
+	if update.Description != nil {
+		set, args = append(set, fmt.Sprintf("description = $%d", len(args)+1)), append(args, *update.Description)
+	}
+	if update.Visibility != nil {
+		set, args = append(set, fmt.Sprintf("visibility = $%d", len(args)+1)), append(args, update.Visibility.String())
+	}
+	if update.Tag != nil {
+		set, args = append(set, fmt.Sprintf("tag = $%d", len(args)+1)), append(args, *update.Tag)
+	}
+	if update.OpenGraphMetadata != nil {
+		openGraphMetadataBytes, err := protojson.Marshal(update.OpenGraphMetadata)
+		if err != nil {
+			return nil, errors.Wrap(err, "Failed to marshal activity payload")
+		}
+		set, args = append(set, fmt.Sprintf("og_metadata = $%d", len(args)+1)), append(args, string(openGraphMetadataBytes))
+	}
+	if len(set) == 0 {
+		return nil, errors.New("no update specified")
+	}
+	args = append(args, update.ID)
+
+	stmt := fmt.Sprintf(`
+		UPDATE shortcut
+		SET %s
+		WHERE id = $%d
+		RETURNING id, creator_id, created_ts, updated_ts, row_status, name, link, title, description, visibility, tag, og_metadata
+	`, strings.Join(set, ","), len(args))
+
+	shortcut := &storepb.Shortcut{}
+	var rowStatus, visibility, tags, openGraphMetadataString string
+	if err := d.db.QueryRowContext(ctx, stmt, args...).Scan(
+		&shortcut.Id,
+		&shortcut.CreatorId,
+		&shortcut.CreatedTs,
+		&shortcut.UpdatedTs,
+		&rowStatus,
+		&shortcut.Name,
+		&shortcut.Link,
+		&shortcut.Title,
+		&shortcut.Description,
+		&visibility,
+		&tags,
+		&openGraphMetadataString,
+	); err != nil {
+		return nil, err
+	}
+	shortcut.RowStatus = store.ConvertRowStatusStringToStorepb(rowStatus)
+	shortcut.Visibility = convertVisibilityStringToStorepb(visibility)
+	shortcut.Tags = filterTags(strings.Split(tags, " "))
+	var ogMetadata storepb.OpenGraphMetadata
+	if err := protojson.Unmarshal([]byte(openGraphMetadataString), &ogMetadata); err != nil {
+		return nil, err
+	}
+	shortcut.OgMetadata = &ogMetadata
+	return shortcut, nil
+}
+
+func (d *DB) ListShortcuts(ctx context.Context, find *store.FindShortcut) ([]*storepb.Shortcut, error) {
+	where, args := []string{"1 = 1"}, []any{}
+	if v := find.ID; v != nil {
+		where, args = append(where, fmt.Sprintf("id = $%d", len(args)+1)), append(args, *v)
+	}
+	if v := find.CreatorID; v != nil {
+		where, args = append(where, fmt.Sprintf("creator_id = $%d", len(args)+1)), append(args, *v)
+	}
+	if v := find.RowStatus; v != nil {
+		where, args = append(where, fmt.Sprintf("row_status = $%d", len(args)+1)), append(args, *v)
+	}
+	if v := find.Name; v != nil {
+		where, args = append(where, fmt.Sprintf("name = $%d", len(args)+1)), append(args, *v)
+	}
+	if v := find.VisibilityList; len(v) != 0 {
+		list := []string{}
+		for _, visibility := range v {
+			list = append(list, fmt.Sprintf("$%d", len(args)+1))
+			args = append(args, visibility)
+		}
+		where = append(where, fmt.Sprintf("visibility IN (%s)", strings.Join(list, ",")))
+	}
+	if v := find.Tag; v != nil {
+		where, args = append(where, fmt.Sprintf("tag LIKE $%d", len(args)+1)), append(args, "%"+*v+"%")
+	}
+
+	rows, err := d.db.QueryContext(ctx, fmt.Sprintf(`
+		SELECT
+			id,
+			creator_id,
+			created_ts,
+			updated_ts,
+			row_status,
+			name,
+			link,
+			title,
+			description,
+			visibility,
+			tag,
+			og_metadata
+		FROM shortcut
+		WHERE %s
+		ORDER BY created_ts DESC
+	`, strings.Join(where, " AND ")), args...)
+	if err != nil {
+		return nil, err
+	}
+	defer rows.Close()
+
+	list := make([]*storepb.Shortcut, 0)
+	for rows.Next() {
+		shortcut := &storepb.Shortcut{}
+		var rowStatus, visibility, tags, openGraphMetadataString string
+		if err := rows.Scan(
+			&shortcut.Id,
+			&shortcut.CreatorId,
+			&shortcut.CreatedTs,
+			&shortcut.UpdatedTs,
+			&rowStatus,
+			&shortcut.Name,
+			&shortcut.Link,
+			&shortcut.Title,
+			&shortcut.Description,
+			&visibility,
+			&tags,
+			&openGraphMetadataString,
+		); err != nil {
+			return nil, err
+		}
+		shortcut.RowStatus = store.ConvertRowStatusStringToStorepb(rowStatus)
+		shortcut.Visibility = storepb.Visibility(storepb.Visibility_value[visibility])
+		shortcut.Tags = filterTags(strings.Split(tags, " "))
+		var ogMetadata storepb.OpenGraphMetadata
+		if err := protojson.Unmarshal([]byte(openGraphMetadataString), &ogMetadata); err != nil {
+			return nil, err
+		}
+		shortcut.OgMetadata = &ogMetadata
+		list = append(list, shortcut)
+	}
+
+	if err := rows.Err(); err != nil {
+		return nil, err
+	}
+	return list, nil
+}
+
+func (d *DB) DeleteShortcut(ctx context.Context, delete *store.DeleteShortcut) error {
+	_, err := d.db.ExecContext(ctx, "DELETE FROM shortcut WHERE id = $1", delete.ID)
+	return err
+}
+
+func vacuumShortcut(ctx context.Context, tx *sql.Tx) error {
+	stmt := `DELETE FROM shortcut WHERE creator_id NOT IN (SELECT id FROM "user")`
+	_, err := tx.ExecContext(ctx, stmt)
+	return err
+}
+
+func filterTags(tags []string) []string {
+	result := []string{}
+	for _, tag := range tags {
+		if tag != "" {
+			result = append(result, tag)
+		}
+	}
+	return result
+}
+
+func convertVisibilityStringToStorepb(visibility string) storepb.Visibility {
+	return storepb.Visibility(storepb.Visibility_value[visibility])
+}
diff --git a/store/db/postgres/user.go b/store/db/postgres/user.go
new file mode 100644
index 00000000..641e687a
--- /dev/null
+++ b/store/db/postgres/user.go
@@ -0,0 +1,182 @@
+package postgres
+
+import (
+	"context"
+	"errors"
+	"fmt"
+	"strings"
+
+	"github.com/yourselfhosted/slash/store"
+)
+
+func (d *DB) CreateUser(ctx context.Context, create *store.User) (*store.User, error) {
+	stmt := `
+		INSERT INTO "user" (
+			email,
+			nickname,
+			password_hash,
+			role
+		)
+		VALUES ($1, $2, $3, $4)
+		RETURNING id, created_ts, updated_ts, row_status
+	`
+	if err := d.db.QueryRowContext(ctx, stmt,
+		create.Email,
+		create.Nickname,
+		create.PasswordHash,
+		create.Role,
+	).Scan(
+		&create.ID,
+		&create.CreatedTs,
+		&create.UpdatedTs,
+		&create.RowStatus,
+	); err != nil {
+		return nil, err
+	}
+
+	user := create
+	return user, nil
+}
+
+func (d *DB) UpdateUser(ctx context.Context, update *store.UpdateUser) (*store.User, error) {
+	set, args := []string{}, []any{}
+	if v := update.RowStatus; v != nil {
+		set, args = append(set, "row_status = $"+placeholder(len(args)+1)), append(args, *v)
+	}
+	if v := update.Email; v != nil {
+		set, args = append(set, "email = $"+placeholder(len(args)+1)), append(args, *v)
+	}
+	if v := update.Nickname; v != nil {
+		set, args = append(set, "nickname = $"+placeholder(len(args)+1)), append(args, *v)
+	}
+	if v := update.PasswordHash; v != nil {
+		set, args = append(set, "password_hash = $"+placeholder(len(args)+1)), append(args, *v)
+	}
+	if v := update.Role; v != nil {
+		set, args = append(set, "role = $"+placeholder(len(args)+1)), append(args, *v)
+	}
+
+	if len(set) == 0 {
+		return nil, errors.New("no fields to update")
+	}
+
+	stmt := `
+		UPDATE "user"
+		SET ` + strings.Join(set, ", ") + `
+		WHERE id = $` + placeholder(len(args)+1) + `
+		RETURNING id, created_ts, updated_ts, row_status, email, nickname, password_hash, role
+	`
+	args = append(args, update.ID)
+	user := &store.User{}
+	if err := d.db.QueryRowContext(ctx, stmt, args...).Scan(
+		&user.ID,
+		&user.CreatedTs,
+		&user.UpdatedTs,
+		&user.RowStatus,
+		&user.Email,
+		&user.Nickname,
+		&user.PasswordHash,
+		&user.Role,
+	); err != nil {
+		return nil, err
+	}
+
+	return user, nil
+}
+
+func (d *DB) ListUsers(ctx context.Context, find *store.FindUser) ([]*store.User, error) {
+	where, args := []string{"1 = 1"}, []any{}
+
+	if v := find.ID; v != nil {
+		where, args = append(where, "id = $"+placeholder(len(args)+1)), append(args, *v)
+	}
+	if v := find.RowStatus; v != nil {
+		where, args = append(where, "row_status = $"+placeholder(len(args)+1)), append(args, v.String())
+	}
+	if v := find.Email; v != nil {
+		where, args = append(where, "email = $"+placeholder(len(args)+1)), append(args, *v)
+	}
+	if v := find.Nickname; v != nil {
+		where, args = append(where, "nickname = $"+placeholder(len(args)+1)), append(args, *v)
+	}
+	if v := find.Role; v != nil {
+		where, args = append(where, "role = $"+placeholder(len(args)+1)), append(args, *v)
+	}
+
+	query := `
+		SELECT 
+			id,
+			created_ts,
+			updated_ts,
+			row_status,
+			email,
+			nickname,
+			password_hash,
+			role
+		FROM "user"
+		WHERE ` + strings.Join(where, " AND ") + `
+		ORDER BY updated_ts DESC, created_ts DESC
+	`
+	rows, err := d.db.QueryContext(ctx, query, args...)
+	if err != nil {
+		return nil, err
+	}
+	defer rows.Close()
+
+	list := make([]*store.User, 0)
+	for rows.Next() {
+		user := &store.User{}
+		if err := rows.Scan(
+			&user.ID,
+			&user.CreatedTs,
+			&user.UpdatedTs,
+			&user.RowStatus,
+			&user.Email,
+			&user.Nickname,
+			&user.PasswordHash,
+			&user.Role,
+		); err != nil {
+			return nil, err
+		}
+		list = append(list, user)
+	}
+
+	if err := rows.Err(); err != nil {
+		return nil, err
+	}
+
+	return list, nil
+}
+
+func (d *DB) DeleteUser(ctx context.Context, delete *store.DeleteUser) error {
+	tx, err := d.db.BeginTx(ctx, nil)
+	if err != nil {
+		return err
+	}
+	defer tx.Rollback()
+
+	if _, err := tx.ExecContext(ctx, `
+		DELETE FROM "user" WHERE id = $1
+	`, delete.ID); err != nil {
+		return err
+	}
+
+	if err := vacuumUserSetting(ctx, tx); err != nil {
+		return err
+	}
+	if err := vacuumShortcut(ctx, tx); err != nil {
+		return err
+	}
+	if err := vacuumMemo(ctx, tx); err != nil {
+		return err
+	}
+	if err := vacuumCollection(ctx, tx); err != nil {
+		return err
+	}
+
+	return tx.Commit()
+}
+
+func placeholder(n int) string {
+	return "$" + fmt.Sprint(n)
+}
diff --git a/store/db/postgres/user_setting.go b/store/db/postgres/user_setting.go
new file mode 100644
index 00000000..a797da18
--- /dev/null
+++ b/store/db/postgres/user_setting.go
@@ -0,0 +1,122 @@
+package postgres
+
+import (
+	"context"
+	"database/sql"
+	"errors"
+	"fmt"
+	"strings"
+
+	"google.golang.org/protobuf/encoding/protojson"
+
+	storepb "github.com/yourselfhosted/slash/proto/gen/store"
+	"github.com/yourselfhosted/slash/store"
+)
+
+func (d *DB) UpsertUserSetting(ctx context.Context, upsert *storepb.UserSetting) (*storepb.UserSetting, error) {
+	stmt := `
+		INSERT INTO user_setting (
+			user_id, key, value
+		)
+		VALUES ($1, $2, $3)
+		ON CONFLICT(user_id, key) DO UPDATE 
+		SET value = EXCLUDED.value
+		RETURNING user_id, key, value
+	`
+
+	var valueString string
+	if upsert.Key == storepb.UserSettingKey_USER_SETTING_ACCESS_TOKENS {
+		valueBytes, err := protojson.Marshal(upsert.GetAccessTokens())
+		if err != nil {
+			return nil, err
+		}
+		valueString = string(valueBytes)
+	} else if upsert.Key == storepb.UserSettingKey_USER_SETTING_LOCALE {
+		valueString = upsert.GetLocale().String()
+	} else if upsert.Key == storepb.UserSettingKey_USER_SETTING_COLOR_THEME {
+		valueString = upsert.GetColorTheme().String()
+	} else {
+		return nil, errors.New("invalid user setting key")
+	}
+
+	if _, err := d.db.ExecContext(ctx, stmt, upsert.UserId, upsert.Key.String(), valueString); err != nil {
+		return nil, err
+	}
+
+	userSettingMessage := upsert
+	return userSettingMessage, nil
+}
+
+func (d *DB) ListUserSettings(ctx context.Context, find *store.FindUserSetting) ([]*storepb.UserSetting, error) {
+	where, args := []string{"1 = 1"}, []any{}
+
+	if v := find.Key; v != storepb.UserSettingKey_USER_SETTING_KEY_UNSPECIFIED {
+		where, args = append(where, fmt.Sprintf("key = $%d", len(args)+1)), append(args, v.String())
+	}
+	if v := find.UserID; v != nil {
+		where, args = append(where, fmt.Sprintf("user_id = $%d", len(args)+1)), append(args, *find.UserID)
+	}
+
+	query := `
+		SELECT
+			user_id,
+			key,
+			value
+		FROM user_setting
+		WHERE ` + strings.Join(where, " AND ")
+	rows, err := d.db.QueryContext(ctx, query, args...)
+	if err != nil {
+		return nil, err
+	}
+	defer rows.Close()
+
+	userSettingList := make([]*storepb.UserSetting, 0)
+	for rows.Next() {
+		userSetting := &storepb.UserSetting{}
+		var keyString, valueString string
+		if err := rows.Scan(
+			&userSetting.UserId,
+			&keyString,
+			&valueString,
+		); err != nil {
+			return nil, err
+		}
+		userSetting.Key = storepb.UserSettingKey(storepb.UserSettingKey_value[keyString])
+		if userSetting.Key == storepb.UserSettingKey_USER_SETTING_ACCESS_TOKENS {
+			accessTokensUserSetting := &storepb.AccessTokensUserSetting{}
+			if err := protojson.Unmarshal([]byte(valueString), accessTokensUserSetting); err != nil {
+				return nil, err
+			}
+			userSetting.Value = &storepb.UserSetting_AccessTokens{
+				AccessTokens: accessTokensUserSetting,
+			}
+		} else if userSetting.Key == storepb.UserSettingKey_USER_SETTING_LOCALE {
+			userSetting.Value = &storepb.UserSetting_Locale{
+				Locale: storepb.LocaleUserSetting(storepb.LocaleUserSetting_value[valueString]),
+			}
+		} else if userSetting.Key == storepb.UserSettingKey_USER_SETTING_COLOR_THEME {
+			userSetting.Value = &storepb.UserSetting_ColorTheme{
+				ColorTheme: storepb.ColorThemeUserSetting(storepb.ColorThemeUserSetting_value[valueString]),
+			}
+		} else {
+			return nil, errors.New("invalid user setting key")
+		}
+		userSettingList = append(userSettingList, userSetting)
+	}
+
+	if err := rows.Err(); err != nil {
+		return nil, err
+	}
+
+	return userSettingList, nil
+}
+
+func vacuumUserSetting(ctx context.Context, tx *sql.Tx) error {
+	stmt := `DELETE FROM user_setting WHERE user_id NOT IN (SELECT id FROM "user")`
+	_, err := tx.ExecContext(ctx, stmt)
+	if err != nil {
+		return err
+	}
+
+	return nil
+}
diff --git a/store/db/postgres/workspace_setting.go b/store/db/postgres/workspace_setting.go
new file mode 100644
index 00000000..e6514425
--- /dev/null
+++ b/store/db/postgres/workspace_setting.go
@@ -0,0 +1,116 @@
+package postgres
+
+import (
+	"context"
+	"errors"
+	"strconv"
+	"strings"
+
+	"google.golang.org/protobuf/encoding/protojson"
+
+	storepb "github.com/yourselfhosted/slash/proto/gen/store"
+	"github.com/yourselfhosted/slash/store"
+)
+
+func (d *DB) UpsertWorkspaceSetting(ctx context.Context, upsert *storepb.WorkspaceSetting) (*storepb.WorkspaceSetting, error) {
+	stmt := `
+		INSERT INTO workspace_setting (
+			key,
+			value
+		)
+		VALUES ($1, $2)
+		ON CONFLICT(key) DO UPDATE 
+		SET value = EXCLUDED.value
+	`
+	var valueString string
+	if upsert.Key == storepb.WorkspaceSettingKey_WORKSPACE_SETTING_LICENSE_KEY {
+		valueString = upsert.GetLicenseKey()
+	} else if upsert.Key == storepb.WorkspaceSettingKey_WORKSPACE_SETTING_SECRET_SESSION {
+		valueString = upsert.GetSecretSession()
+	} else if upsert.Key == storepb.WorkspaceSettingKey_WORKSAPCE_SETTING_ENABLE_SIGNUP {
+		valueString = strconv.FormatBool(upsert.GetEnableSignup())
+	} else if upsert.Key == storepb.WorkspaceSettingKey_WORKSPACE_SETTING_CUSTOM_STYLE {
+		valueString = upsert.GetCustomStyle()
+	} else if upsert.Key == storepb.WorkspaceSettingKey_WORKSPACE_SETTING_CUSTOM_SCRIPT {
+		valueString = upsert.GetCustomScript()
+	} else if upsert.Key == storepb.WorkspaceSettingKey_WORKSPACE_SETTING_AUTO_BACKUP {
+		valueBytes, err := protojson.Marshal(upsert.GetAutoBackup())
+		if err != nil {
+			return nil, err
+		}
+		valueString = string(valueBytes)
+	} else {
+		return nil, errors.New("invalid workspace setting key")
+	}
+
+	if _, err := d.db.ExecContext(ctx, stmt, upsert.Key.String(), valueString); err != nil {
+		return nil, err
+	}
+
+	workspaceSetting := upsert
+	return workspaceSetting, nil
+}
+
+func (d *DB) ListWorkspaceSettings(ctx context.Context, find *store.FindWorkspaceSetting) ([]*storepb.WorkspaceSetting, error) {
+	where, args := []string{"1 = 1"}, []interface{}{}
+
+	if find.Key != storepb.WorkspaceSettingKey_WORKSPACE_SETTING_KEY_UNSPECIFIED {
+		where, args = append(where, "key = $"+placeholder(len(args)+1)), append(args, find.Key.String())
+	}
+
+	query := `
+		SELECT
+			key,
+			value
+		FROM workspace_setting
+		WHERE ` + strings.Join(where, " AND ")
+	rows, err := d.db.QueryContext(ctx, query, args...)
+	if err != nil {
+		return nil, err
+	}
+
+	defer rows.Close()
+
+	list := []*storepb.WorkspaceSetting{}
+	for rows.Next() {
+		workspaceSetting := &storepb.WorkspaceSetting{}
+		var keyString, valueString string
+		if err := rows.Scan(
+			&keyString,
+			&valueString,
+		); err != nil {
+			return nil, err
+		}
+		workspaceSetting.Key = storepb.WorkspaceSettingKey(storepb.WorkspaceSettingKey_value[keyString])
+		if workspaceSetting.Key == storepb.WorkspaceSettingKey_WORKSPACE_SETTING_LICENSE_KEY {
+			workspaceSetting.Value = &storepb.WorkspaceSetting_LicenseKey{LicenseKey: valueString}
+		} else if workspaceSetting.Key == storepb.WorkspaceSettingKey_WORKSPACE_SETTING_SECRET_SESSION {
+			workspaceSetting.Value = &storepb.WorkspaceSetting_SecretSession{SecretSession: valueString}
+		} else if workspaceSetting.Key == storepb.WorkspaceSettingKey_WORKSAPCE_SETTING_ENABLE_SIGNUP {
+			enableSignup, err := strconv.ParseBool(valueString)
+			if err != nil {
+				return nil, err
+			}
+			workspaceSetting.Value = &storepb.WorkspaceSetting_EnableSignup{EnableSignup: enableSignup}
+		} else if workspaceSetting.Key == storepb.WorkspaceSettingKey_WORKSPACE_SETTING_CUSTOM_STYLE {
+			workspaceSetting.Value = &storepb.WorkspaceSetting_CustomStyle{CustomStyle: valueString}
+		} else if workspaceSetting.Key == storepb.WorkspaceSettingKey_WORKSPACE_SETTING_CUSTOM_SCRIPT {
+			workspaceSetting.Value = &storepb.WorkspaceSetting_CustomScript{CustomScript: valueString}
+		} else if workspaceSetting.Key == storepb.WorkspaceSettingKey_WORKSPACE_SETTING_AUTO_BACKUP {
+			autoBackupSetting := &storepb.AutoBackupWorkspaceSetting{}
+			if err := protojson.Unmarshal([]byte(valueString), autoBackupSetting); err != nil {
+				return nil, err
+			}
+			workspaceSetting.Value = &storepb.WorkspaceSetting_AutoBackup{AutoBackup: autoBackupSetting}
+		} else {
+			continue
+		}
+		list = append(list, workspaceSetting)
+	}
+
+	if err := rows.Err(); err != nil {
+		return nil, err
+	}
+
+	return list, nil
+}