diff --git a/.env b/.env
index 3012f3e0..59a1d856 100644
--- a/.env
+++ b/.env
@@ -45,3 +45,10 @@ JWT_SECRET_KEY=%kernel.project_dir%/config/jwt/private.pem
 JWT_PUBLIC_KEY=%kernel.project_dir%/config/jwt/public.pem
 JWT_PASSPHRASE=275fee27732fdd71221f5cbe115f889d
 ###< lexik/jwt-authentication-bundle ###
+
+###> symfony/messenger ###
+# Choose one of the transports below
+# MESSENGER_TRANSPORT_DSN=doctrine://default
+# MESSENGER_TRANSPORT_DSN=amqp://guest:guest@localhost:5672/%2f/messages
+# MESSENGER_TRANSPORT_DSN=redis://localhost:6379/messages
+###< symfony/messenger ###
diff --git a/composer.json b/composer.json
index 60a60de2..cd232a09 100755
--- a/composer.json
+++ b/composer.json
@@ -34,38 +34,39 @@
         "symfony/validator": "4.4.*",
         "symfony/twig-bundle": "4.4.*",
         "symfony/yaml": "4.4.*",
+        "symfony/apache-pack": "^1.0",
+        "symfony/expression-language": "4.4.*",
+        "symfony/proxy-manager-bridge": "4.4.*",
+        "symfony/property-access": "4.4.*",
+        "symfony/property-info": "4.4.*",
+        "symfony/serializer": "4.4.*",
+        "symfony/messenger": "4.4.*",
+        "doctrine/annotations": "^1.0",
         "doctrine/orm": "^2.3",
         "doctrine/doctrine-bundle": "^1.2",
         "doctrine/doctrine-cache-bundle": "^1.4",
         "doctrine/doctrine-migrations-bundle": "^v1.3.2",
+        "twig/extra-bundle": "^2.12|^3.0",
+        "twig/twig": "^2.12|^3.0",
         "sensio/framework-extra-bundle": "^5.6",
         "friendsofsymfony/user-bundle": "^2.1.2",
         "friendsofsymfony/jsrouting-bundle": "^2.6",
+        "beberlei/doctrineextensions": "^1.2",
+        "knplabs/doctrine-behaviors": "1.4",
+        "api-platform/core": "^2.6",
         "easycorp/easyadmin-bundle": "^2",
+        "composer/package-versions-deprecated": "^1.11",
         "ocramius/proxy-manager": "^2.0.2",
         "marc-mabe/php-enum": "^2.2",
-        "beberlei/doctrineextensions": "^1.2",
         "vich/uploader-bundle": "^1.7",
         "liip/imagine-bundle": "^2.0",
         "youthweb/urllinker": "^1.2",
         "sentry/sentry-symfony": "^3.0",
-        "knplabs/doctrine-behaviors": "1.4",
         "nelmio/cors-bundle": "1.5.6",
         "league/uri": "^6.2",
         "league/uri-components": "^2.2",
-        "composer/package-versions-deprecated": "^1.11",
-        "twig/extra-bundle": "^2.12|^3.0",
-        "twig/twig": "^2.12|^3.0",
-        "symfony/apache-pack": "^1.0",
         "ezyang/htmlpurifier": "^4.13",
-        "api-platform/core": "^2.6",
-        "symfony/expression-language": "4.4.*",
-        "symfony/proxy-manager-bridge": "4.4.*",
-        "doctrine/annotations": "^1.0",
         "phpdocumentor/reflection-docblock": "^5.2",
-        "symfony/property-access": "4.4.*",
-        "symfony/property-info": "4.4.*",
-        "symfony/serializer": "4.4.*",
         "lexik/jwt-authentication-bundle": "^2.11"
     },
     "require-dev": {
diff --git a/composer.lock b/composer.lock
index a295740e..6d341740 100644
--- a/composer.lock
+++ b/composer.lock
@@ -4,7 +4,7 @@
         "Read more about it at https://getcomposer.org/doc/01-basic-usage.md#installing-dependencies",
         "This file is @generated automatically"
     ],
-    "content-hash": "c661776a2beedb744bc65753c2774a60",
+    "content-hash": "b46e79c17007524666a26a9b0d358a17",
     "packages": [
         {
             "name": "api-platform/core",
@@ -7228,6 +7228,93 @@
             ],
             "time": "2020-10-24T11:50:19+00:00"
         },
+        {
+            "name": "symfony/messenger",
+            "version": "v4.4.26",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/symfony/messenger.git",
+                "reference": "de0030fda722e26b4f3cc23622e583c6e985a5a5"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/symfony/messenger/zipball/de0030fda722e26b4f3cc23622e583c6e985a5a5",
+                "reference": "de0030fda722e26b4f3cc23622e583c6e985a5a5",
+                "shasum": ""
+            },
+            "require": {
+                "php": ">=7.1.3",
+                "psr/log": "~1.0",
+                "symfony/polyfill-php80": "^1.15"
+            },
+            "conflict": {
+                "doctrine/persistence": "<1.3",
+                "symfony/event-dispatcher": "<4.3",
+                "symfony/framework-bundle": "<4.4",
+                "symfony/http-kernel": "<4.4"
+            },
+            "require-dev": {
+                "doctrine/dbal": "^2.6|^3.0",
+                "doctrine/persistence": "^1.3|^2",
+                "psr/cache": "^1.0|^2.0|^3.0",
+                "symfony/console": "^3.4|^4.0|^5.0",
+                "symfony/dependency-injection": "^3.4.19|^4.1.8|^5.0",
+                "symfony/event-dispatcher": "^4.3|^5.0",
+                "symfony/http-kernel": "^4.4",
+                "symfony/process": "^3.4|^4.0|^5.0",
+                "symfony/property-access": "^3.4|^4.0|^5.0",
+                "symfony/serializer": "^3.4|^4.0|^5.0",
+                "symfony/service-contracts": "^1.1|^2",
+                "symfony/stopwatch": "^3.4|^4.0|^5.0",
+                "symfony/validator": "^3.4|^4.0|^5.0"
+            },
+            "suggest": {
+                "enqueue/messenger-adapter": "For using the php-enqueue library as a transport."
+            },
+            "type": "library",
+            "autoload": {
+                "psr-4": {
+                    "Symfony\\Component\\Messenger\\": ""
+                },
+                "exclude-from-classmap": [
+                    "/Tests/"
+                ]
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "MIT"
+            ],
+            "authors": [
+                {
+                    "name": "Samuel Roze",
+                    "email": "samuel.roze@gmail.com"
+                },
+                {
+                    "name": "Symfony Community",
+                    "homepage": "https://symfony.com/contributors"
+                }
+            ],
+            "description": "Helps applications send and receive messages to/from other applications or via message queues",
+            "homepage": "https://symfony.com",
+            "support": {
+                "source": "https://github.com/symfony/messenger/tree/v4.4.26"
+            },
+            "funding": [
+                {
+                    "url": "https://symfony.com/sponsor",
+                    "type": "custom"
+                },
+                {
+                    "url": "https://github.com/fabpot",
+                    "type": "github"
+                },
+                {
+                    "url": "https://tidelift.com/funding/github/packagist/symfony/symfony",
+                    "type": "tidelift"
+                }
+            ],
+            "time": "2021-06-27T12:18:17+00:00"
+        },
         {
             "name": "symfony/mime",
             "version": "v4.4.16",
@@ -13488,5 +13575,5 @@
     "platform-overrides": {
         "php": "7.3"
     },
-    "plugin-api-version": "1.1.0"
+    "plugin-api-version": "2.0.0"
 }
diff --git a/config/packages/easy_admin.yaml b/config/packages/easy_admin.yaml
index ff09012b..a39f8394 100644
--- a/config/packages/easy_admin.yaml
+++ b/config/packages/easy_admin.yaml
@@ -21,6 +21,8 @@ easy_admin:
         - 'js/message_validator.js'
         - 'js/filter_table_row.js'
         - 'js/select2.js'
+  formats:
+    datetime: 'd/m/y'
   entities:
     Notice:
       class: App\Entity\Notice
@@ -32,17 +34,17 @@ easy_admin:
         fields: &noticeListFields
           - { property: id, label: notices.id, css_class: 'column-id' }
           - { property: contributor, label: notices.contributor, css_class: 'column-contributor' }
-          - { property: relayersCount, label: notices.relayers, css_class: 'column-relayers' }
+          - { property: matchingContexts, label: notices.matchingContexts, css_class: 'column-matchingContexts' }
           - { property: message, label: notices.message, css_class: 'column-message' }
+          - { property: relayersCount, label: notices.relayers, css_class: 'column-relayers' }
           - { property: visibility, label: notices.visibility, css_class: 'column-visibility' }
-          - { property: matchingContexts, label: notices.matchingContexts, css_class: 'column-matchingContexts' }
-          - { property: badgedRatingCount, label: notices.badgedRatingCount, css_class: 'graphable column-badgedRatingCount' }
-          - { property: displayedRatingCount, label: notices.displayedRatingCount, css_class: 'graphable column-displayedRatingCount' }
-          - { property: unfoldedRatingCount, label: notices.unfoldedRatingCount, css_class: 'graphable column-unfoldedRatingCount' }
-          - { property: clickedRatingCount, label: notices.clickedRatingCount, css_class: 'graphable column-clickedRatingCount' }
-          - { property: likedRatingCount, label: notices.likedRatingCount, css_class: 'graphable column-likedRatingCount' }
-          - { property: dislikedRatingCount, label: notices.dislikedRatingCount, css_class: 'graphable column-dislikedRatingCount' }
-          - { property: dismissedRatingCount, label: notices.dismissedRatingCount, css_class: 'graphable column-dismissedRatingCount' }
+          - { property: badgedCount, label: notices.badgedCount, css_class: 'graphable column-badgedCount' }
+          - { property: displayedCount, label: notices.displayedCount, css_class: 'graphable column-displayedCount' }
+          - { property: unfoldedCount, label: notices.unfoldedCount, css_class: 'graphable column-unfoldedCount' }
+          - { property: clickedCount, label: notices.clickedCount, css_class: 'graphable column-clickedCount' }
+          - { property: likedCount, label: notices.likedCount, css_class: 'graphable column-likedCount' }
+          - { property: dislikedCount, label: notices.dislikedCount, css_class: 'graphable column-dislikedCount' }
+          - { property: dismissedCount, label: notices.dismissedCount, css_class: 'graphable column-dismissedCount' }
           - { property: locale, label: contributors.locale }
           - { property: expires, label: notices.expires, css_class: 'column-expires' }
           - { property: created, label: notices.created, css_class: 'column-created' }
diff --git a/config/packages/messenger.yaml b/config/packages/messenger.yaml
new file mode 100644
index 00000000..6b7319ce
--- /dev/null
+++ b/config/packages/messenger.yaml
@@ -0,0 +1,14 @@
+framework:
+    messenger:
+        # Uncomment this (and the failed transport below) to send failed messages to this transport for later handling.
+        # failure_transport: failed
+
+        transports:
+            # https://symfony.com/doc/current/messenger.html#transport-configuration
+            # async: '%env(MESSENGER_TRANSPORT_DSN)%'
+            # failed: 'doctrine://default?queue_name=failed'
+            # sync: 'sync://'
+
+        routing:
+            # Route your messages to the transports
+            # 'App\Message\YourMessage': async
diff --git a/migrations/Version20210704210627.php b/migrations/Version20210704210627.php
new file mode 100644
index 00000000..38dbfce4
--- /dev/null
+++ b/migrations/Version20210704210627.php
@@ -0,0 +1,54 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Application\Migrations;
+
+use Doctrine\DBAL\Schema\Schema;
+use Doctrine\Migrations\AbstractMigration;
+
+/**
+ * Auto-generated Migration: Please modify to your needs!
+ */
+final class Version20210704210627 extends AbstractMigration
+{
+    public function up(Schema $schema): void
+    {
+        $this->addSql('ALTER TABLE notice 
+            ADD COLUMN badged_count int DEFAULT 0 NOT NULL,
+            ADD COLUMN displayed_count int DEFAULT 0 NOT NULL,
+            ADD COLUMN unfolded_count int DEFAULT 0 NOT NULL,
+            ADD COLUMN clicked_count int DEFAULT 0 NOT NULL,
+            ADD COLUMN liked_count int DEFAULT 0 NOT NULL,
+            ADD COLUMN disliked_count int DEFAULT 0 NOT NULL,
+            ADD COLUMN dismissed_count int DEFAULT 0 NOT NULL;
+        ');
+
+        $this->addSql('CREATE INDEX rating_notice_type_index ON rating (notice_id, type);');
+
+        $this->addSql('UPDATE notice n
+            SET n.badged_count = (SELECT COUNT(*) FROM rating r WHERE r.notice_id = n.id AND r.type = \'badge\'),
+                n.displayed_count = (SELECT COUNT(*) FROM rating r WHERE r.notice_id = n.id AND r.type = \'display\'),
+                n.unfolded_count = (SELECT COUNT(*) FROM rating r WHERE r.notice_id = n.id AND r.type = \'unfold\'),
+                n.clicked_count = (SELECT COUNT(*) FROM rating r WHERE r.notice_id = n.id AND r.type = \'outbound-click\'),
+                n.liked_count = (SELECT COUNT(*) FROM rating r WHERE r.notice_id = n.id AND r.type = \'like\') - (SELECT COUNT(*) FROM rating r WHERE r.notice_id = n.id AND r.type = \'unlike\'),
+                n.disliked_count = (SELECT COUNT(*) FROM rating r WHERE r.notice_id = n.id AND r.type = \'dislike\') - (SELECT COUNT(*) FROM rating r WHERE r.notice_id = n.id AND r.type = \'undislike\'),
+                n.dismissed_count = (SELECT COUNT(*) FROM rating r WHERE r.notice_id = n.id AND r.type = \'dismiss\') - (SELECT COUNT(*) FROM rating r WHERE r.notice_id = n.id AND r.type = \'undismiss\');
+                ');
+    }
+
+    public function down(Schema $schema): void
+    {
+        $this->addSql('ALTER TABLE rating DROP INDEX rating_notice_type_index');
+
+        $this->addSql('ALTER TABLE notice 
+            DROP COLUMN badged_count,
+            DROP COLUMN displayed_count,
+            DROP COLUMN unfolded_count,
+            DROP COLUMN clicked_count,
+            DROP COLUMN liked_count,
+            DROP COLUMN disliked_count,
+            DROP COLUMN dismissed_count
+        ');
+    }
+}
diff --git a/src/Controller/AdminApiController.php b/src/Controller/AdminApiController.php
deleted file mode 100644
index c9b67bef..00000000
--- a/src/Controller/AdminApiController.php
+++ /dev/null
@@ -1,47 +0,0 @@
-<?php
-
-declare(strict_types=1);
-
-namespace App\Controller;
-
-use App\Repository\MatchingContextRepository;
-use Sensio\Bundle\FrameworkExtraBundle\Configuration\Route;
-use Symfony\Component\HttpFoundation\JsonResponse;
-use Symfony\Component\HttpKernel\Exception\NotFoundHttpException;
-use Symfony\Component\Serializer\SerializerInterface;
-
-class AdminApiController
-{
-    /**
-     * @var MatchingContextRepository
-     */
-    protected $repository;
-
-    /**
-     * @var SerializerInterface
-     */
-    protected $serializer;
-
-    public function __construct(SerializerInterface $serializer, MatchingContextRepository $repository)
-    {
-        $this->serializer = $serializer;
-
-        $this->repository = $repository;
-    }
-
-    /**
-     * @Route("/matchingcontexts")
-     */
-    public function getMatchingcontextsAction(): JsonResponse
-    {
-        $matchingContexts = $this->repository->findAllWithPrivateVisibility();
-
-        if ( ! $matchingContexts) {
-            throw new NotFoundHttpException('No matching contexts exists');
-        }
-
-        $json = $this->serializer->serialize($matchingContexts, 'json', ['groups' => ['v3:list']]);
-
-        return new JsonResponse($json, 200, [], true);
-    }
-}
diff --git a/src/Controller/Api/V3/PostNoticeRating.http b/src/Controller/Api/V3/PostNoticeRating.http
new file mode 100644
index 00000000..f386e52e
--- /dev/null
+++ b/src/Controller/Api/V3/PostNoticeRating.http
@@ -0,0 +1,9 @@
+POST http://localhost:8088/api/v3/notices/1028/ratings
+Content-Type: application/json
+
+{
+  "ratingType": "badge"
+}
+
+
+###
diff --git a/src/Controller/Api/V3/PostNoticeRatingAction.php b/src/Controller/Api/V3/PostNoticeRatingAction.php
index cbcb14a0..22264412 100644
--- a/src/Controller/Api/V3/PostNoticeRatingAction.php
+++ b/src/Controller/Api/V3/PostNoticeRatingAction.php
@@ -5,6 +5,7 @@
 namespace App\Controller\Api\V3;
 
 use App\Entity\Rating;
+use App\Message\NoticeRated;
 use App\Repository\NoticeRepository;
 use App\Serializer\V3\NormalizerOptions;
 use Doctrine\ORM\EntityManagerInterface;
@@ -14,6 +15,7 @@
 use Symfony\Component\HttpFoundation\Request;
 use Symfony\Component\HttpKernel\Exception\NotFoundHttpException;
 use Symfony\Component\HttpKernel\Exception\UnprocessableEntityHttpException;
+use Symfony\Component\Messenger\MessageBusInterface;
 use Symfony\Component\Serializer\SerializerInterface;
 
 class PostNoticeRatingAction extends BaseAction
@@ -39,7 +41,7 @@ public function __construct(SerializerInterface $serializer, NoticeRepository $n
      * @Route("/notices/{id}/ratings")
      * @Method("POST")
      */
-    public function __invoke(Request $request): JsonResponse
+    public function __invoke(Request $request, MessageBusInterface $bus): JsonResponse
     {
         $id = $request->get('id', null);
         $notice = $this->noticeRepository->getOne((int) $id);
@@ -60,6 +62,8 @@ public function __invoke(Request $request): JsonResponse
         $this->entityManager->persist($rating);
         $this->entityManager->flush();
 
+        $bus->dispatch(new NoticeRated($notice));
+
         return new JsonResponse('', 204, [], true);
     }
 }
diff --git a/src/DataFixtures/NoticeFixtures.php b/src/DataFixtures/NoticeFixtures.php
index 728c2a43..5b0f4478 100644
--- a/src/DataFixtures/NoticeFixtures.php
+++ b/src/DataFixtures/NoticeFixtures.php
@@ -29,6 +29,7 @@ public function load(ObjectManager $manager): void
 <a href="http://link.com?foo=bar">foo</a>
 with https://bulles.fr.');
         $notice->setVisibility(NoticeVisibility::PUBLIC_VISIBILITY());
+        $notice->setLikedCount(2);
         $this->addReference('notice_type_ecology', $notice);
         $manager->persist($notice);
 
diff --git a/src/Entity/Notice.php b/src/Entity/Notice.php
index dadf2b91..a0e51d58 100644
--- a/src/Entity/Notice.php
+++ b/src/Entity/Notice.php
@@ -181,6 +181,62 @@ class Notice
      */
     private $ratings;
 
+    /**
+     * @var int
+     *
+     * @ORM\Column(name="badged_count", type="integer", nullable=false, options={"default"=0})
+     * @Groups({"create", "read", "update"})
+     */
+    private $badgedCount = 0;
+
+    /**
+     * @var int
+     *
+     * @ORM\Column(name="displayed_count", type="integer", nullable=false, options={"default"=0})
+     * @Groups({"create", "read", "update"})
+     */
+    private $displayedCount = 0;
+
+    /**
+     * @var int
+     *
+     * @ORM\Column(name="unfolded_count", type="integer", nullable=false, options={"default"=0})
+     * @Groups({"create", "read", "update"})
+     */
+    private $unfoldedCount = 0;
+
+    /**
+     * @var int
+     *
+     * @ORM\Column(name="clicked_count", type="integer", nullable=false, options={"default"=0})
+     * @Groups({"create", "read", "update"})
+     */
+    private $clickedCount = 0;
+
+    /**
+     * @var int
+     *
+     * @ORM\Column(name="liked_count", type="integer", nullable=false, options={"default"=0})
+     * @Groups({"create", "read", "update"})
+     */
+    private $likedCount = 0;
+
+    /**
+     * @var int
+     *
+     * @ORM\Column(name="disliked_count", type="integer", nullable=false, options={"default"=0})
+     * @Groups({"create", "read", "update"})
+     */
+    private $dislikedCount = 0;
+
+    /**
+     * @var int
+     *
+     * @ORM\Column(name="dismissed_count", type="integer", nullable=false, options={"default"=0})
+     * @Groups({"create", "read", "update"})
+     */
+    private $dismissedCount = 0;
+
     /**
      * Latest update date of the notice, serialized in the ISO8601 format.
      *
@@ -292,6 +348,11 @@ public static function equals(self $notice): Closure
         };
     }
 
+    public function __toString(): string
+    {
+        return sprintf('(id:%d) [%s] %s', $this->getId(), $this->getContributor(), StringHelper::truncate($this->getMessage(), 45));
+    }
+
     public function getId(): ?int
     {
         return $this->id;
@@ -354,63 +415,6 @@ public function setMessage(string $message): self
         return $this;
     }
 
-    /**
-     * Amount of likes the Notice has received.
-     *
-     * @Groups({"read"})
-     * @ApiProperty(
-     *     readable=true,
-     *     writable=false,
-     * )
-     */
-    public function getLikes(): int
-    {
-        return $this->getLikedRatingCount();
-    }
-
-    public function getLikedRatingCount(): int
-    {
-        return $this->getRatingBalance(Rating::LIKE, Rating::UNLIKE);
-    }
-
-    protected function getRatingBalance(string $typeUp, string $typeDown): int
-    {
-        $balance = $this->getRatingCount($typeUp) - $this->getRatingCount($typeDown);
-
-        return $balance > 0 ? $balance : 0;
-    }
-
-    protected function getRatingCount(string $type): int
-    {
-        return $this->getRatings()->filter(function (Rating $rating) use ($type) {
-            return $rating->getType() === $type;
-        })->count();
-    }
-
-    public function getRatings(): ?Collection
-    {
-        return $this->ratings;
-    }
-
-    /**
-     * Amount of dislikes the Notice has received.
-     *
-     * @Groups({"read"})
-     * @ApiProperty(
-     *     readable=true,
-     *     writable=false,
-     * )
-     */
-    public function getDislikes(): int
-    {
-        return $this->getDislikedRatingCount();
-    }
-
-    public function getDislikedRatingCount(): int
-    {
-        return $this->getRatingBalance(Rating::DISLIKE, Rating::UNDISLIKE);
-    }
-
     public function addMatchingContext(MatchingContext $matchingContext): self
     {
         $matchingContext->setNotice($this);
@@ -425,11 +429,6 @@ public function removeMatchingContext(MatchingContext $matchingContext): void
         $this->matchingContexts->removeElement($matchingContext);
     }
 
-    public function __toString(): string
-    {
-        return sprintf('(id:%d) [%s] %s', $this->getId(), $this->getContributor(), StringHelper::truncate($this->getMessage(), 45));
-    }
-
     public function getContributor(): ?Contributor
     {
         return $this->contributor;
@@ -442,11 +441,6 @@ public function setContributor(Contributor $contributor = null): self
         return $this;
     }
 
-    public function hasPublicVisibility(): bool
-    {
-        return $this->getVisibility() === NoticeVisibility::PUBLIC_VISIBILITY();
-    }
-
     public function getVisibility(): ?NoticeVisibility
     {
         if ( ! $this->visibility) {
@@ -472,9 +466,9 @@ public function setVisibility($visibility): self
         return $this;
     }
 
-    public function isUnpublished(): bool
+    public function hasPublicVisibility(): bool
     {
-        return null !== $this->getExpires() && $this->isUnpublishedOnExpiration() && $this->getExpires() < new DateTime('now');
+        return $this->getVisibility() === NoticeVisibility::PUBLIC_VISIBILITY();
     }
 
     public function getExpires(): ?DateTimeInterface
@@ -507,46 +501,121 @@ public function setNote(?string $note): void
         $this->note = $note;
     }
 
-    public function getBadgedRatingCount(): int
+    public function getRatings(): ?Collection
+    {
+        return $this->ratings;
+    }
+
+    /**
+     * Amount of likes the Notice has received.
+     *
+     * @Groups({"read"})
+     * @ApiProperty(
+     *     readable=true,
+     *     writable=false,
+     * )
+     */
+    public function getLikes(): int
+    {
+        return $this->getLikedCount();
+    }
+
+    /**
+     * Amount of dislikes the Notice has received.
+     *
+     * @Groups({"read"})
+     * @ApiProperty(
+     *     readable=true,
+     *     writable=false,
+     * )
+     */
+    public function getDislikes(): int
+    {
+        return $this->getDislikedCount();
+    }
+
+    public function getBadgedCount(): int
+    {
+        return $this->badgedCount;
+    }
+
+    public function setBadgedCount(int $count): self
     {
-        return $this->getRatingCount(Rating::BADGE);
+        $this->badgedCount = $count;
+
+        return $this;
     }
 
-    public function getDisplayedRatingCount(): int
+    public function getDisplayedCount(): int
     {
-        return $this->getRatingCount(Rating::DISPLAY);
+        return $this->displayedCount;
     }
 
-    public function getUnfoldedRatingCount(): int
+    public function setDisplayedCount(int $count): self
     {
-        return $this->getRatingCount(Rating::UNFOLD);
+        $this->displayedCount = $count;
+
+        return $this;
     }
 
-    public function getClickedRatingCount(): int
+    public function getUnfoldedCount(): int
     {
-        return $this->getRatingCount(Rating::OUTBOUND_CLICK);
+        return $this->unfoldedCount;
     }
 
-    public function getDismissedRatingCount(): int
+    public function setUnfoldedCount(int $count): self
     {
-        return $this->getRatingBalance(Rating::DISMISS, Rating::UNDISMISS);
+        $this->unfoldedCount = $count;
+
+        return $this;
     }
 
-    public function getReportedRatingCount(): int
+    public function getClickedCount(): int
     {
-        return $this->getRatingCount(Rating::REPORT);
+        return $this->clickedCount;
     }
 
-    public function addRating(Rating $rating): self
+    public function setClickedCount(int $count): self
     {
-        $this->ratings[] = $rating;
+        $this->clickedCount = $count;
 
         return $this;
     }
 
-    public function removeRating(Rating $rating): void
+    public function getLikedCount(): int
     {
-        $this->ratings->removeElement($rating);
+        return $this->likedCount;
+    }
+
+    public function setLikedCount(int $count): self
+    {
+        $this->likedCount = $count;
+
+        return $this;
+    }
+
+    public function getDislikedCount(): int
+    {
+        return $this->dislikedCount;
+    }
+
+    public function setDislikedCount(int $count): self
+    {
+        $this->dislikedCount = $count;
+
+        return $this;
+    }
+
+    public function getDismissedCount(): int
+    {
+        return $this->dismissedCount;
+    }
+
+    public function setDismissedCount(int $count): self
+    {
+        $this->dismissedCount = $count;
+
+        return $this;
     }
 
     public function getCreated(): ?DateTime
@@ -616,10 +685,10 @@ public function getExampleUrl(): ?string
     public function getExampleMatchingUrl(): ?string
     {
         $first = $this->getMatchingContexts()
-      ->filter(function (MatchingContext $mc) {
-          return (bool) $mc->getExampleUrl();
-      })
-      ->first();
+            ->filter(function (MatchingContext $mc) {
+                return (bool) $mc->getExampleUrl();
+            })
+            ->first();
         if ($first) {
             return $first->getExampleUrl();
         }
@@ -642,15 +711,15 @@ public function addRelayer(Contributor $contributor): self
     public function removeRelayer(Contributor $contributor): self
     {
         $this->relays->removeElement(
-      current(
-        array_filter(
-          $this->relays->toArray(),
-          static function (Relay $relay) use ($contributor) {
-              return $relay->getRelayedBy()->getId() === $contributor->getId();
-          }
-        )
-      )
-    );
+            current(
+                array_filter(
+                    $this->relays->toArray(),
+                    static function (Relay $relay) use ($contributor) {
+                        return $relay->getRelayedBy()->getId() === $contributor->getId();
+                    }
+                )
+            )
+        );
 
         return $this;
     }
diff --git a/src/Message/NoticeRated.php b/src/Message/NoticeRated.php
new file mode 100644
index 00000000..34c84347
--- /dev/null
+++ b/src/Message/NoticeRated.php
@@ -0,0 +1,25 @@
+<?php
+
+declare(strict_types=1);
+
+namespace App\Message;
+
+use App\Entity\Notice;
+
+class NoticeRated
+{
+    /**
+     * @var Notice
+     */
+    private $notice;
+
+    public function __construct(Notice $notice)
+    {
+        $this->notice = $notice;
+    }
+
+    public function getNotice(): Notice
+    {
+        return $this->notice;
+    }
+}
diff --git a/src/MessageHandler/NoticeRatedHandler.php b/src/MessageHandler/NoticeRatedHandler.php
new file mode 100644
index 00000000..f1dce310
--- /dev/null
+++ b/src/MessageHandler/NoticeRatedHandler.php
@@ -0,0 +1,44 @@
+<?php
+
+declare(strict_types=1);
+
+namespace App\MessageHandler;
+
+use App\Entity\Notice;
+use App\Entity\Rating;
+use App\Message\NoticeRated;
+use App\Repository\RatingRepository;
+use Doctrine\ORM\EntityManagerInterface;
+use Symfony\Component\Messenger\Handler\MessageHandlerInterface;
+
+class NoticeRatedHandler implements MessageHandlerInterface
+{
+    /** @var RatingRepository */
+    private $ratingRepository;
+    /** @var EntityManagerInterface */
+    private $em;
+
+    public function __construct(EntityManagerInterface $em, RatingRepository $ratingRepository)
+    {
+        $this->ratingRepository = $ratingRepository;
+        $this->em = $em;
+    }
+
+    public function __invoke(NoticeRated $noticeUpdated): void
+    {
+        $this->updateNoticeRatingsCount($noticeUpdated->getNotice());
+    }
+
+    protected function updateNoticeRatingsCount(Notice $notice): void
+    {
+        $notice
+            ->setBadgedCount($this->ratingRepository->getNoticeRatingsCountForType($notice, Rating::BADGE))
+            ->setDisplayedCount($this->ratingRepository->getNoticeRatingsCountForType($notice, Rating::DISPLAY))
+            ->setUnfoldedCount($this->ratingRepository->getNoticeRatingsCountForType($notice, Rating::UNFOLD))
+            ->setClickedCount($this->ratingRepository->getNoticeRatingsCountForType($notice, Rating::OUTBOUND_CLICK))
+            ->setLikedCount($this->ratingRepository->getNoticeRatingsCountForType($notice, Rating::LIKE, Rating::UNLIKE))
+            ->setDislikedCount($this->ratingRepository->getNoticeRatingsCountForType($notice, Rating::DISLIKE, Rating::UNDISLIKE))
+            ->setDismissedCount($this->ratingRepository->getNoticeRatingsCountForType($notice, Rating::DISMISS, Rating::UNDISMISS));
+        $this->em->flush();
+    }
+}
diff --git a/src/Repository/RatingRepository.php b/src/Repository/RatingRepository.php
index 39990bb3..a5750a5b 100644
--- a/src/Repository/RatingRepository.php
+++ b/src/Repository/RatingRepository.php
@@ -38,6 +38,21 @@ public function __construct(ManagerRegistry $registry, DateTimeImmutable $dateTi
         $this->to = $dateTime->today();
     }
 
+    public function getNoticeRatingsCountForType(Notice $notice, string $ratingType, ?string $ratingUndoType = null): int
+    {
+        $count = $this->count([
+            'notice' => $notice,
+            'type' => $ratingType,
+        ]);
+
+        $undoCount = $ratingUndoType ? $this->count([
+            'notice' => $notice,
+            'type' => $ratingUndoType,
+        ]) : 0;
+
+        return $count - $undoCount;
+    }
+
     /**
      * @param string[] $types
      *
diff --git a/src/Serializer/V3/NoticeNormalizer.php b/src/Serializer/V3/NoticeNormalizer.php
index bb8d0d10..c2edd1b6 100644
--- a/src/Serializer/V3/NoticeNormalizer.php
+++ b/src/Serializer/V3/NoticeNormalizer.php
@@ -82,8 +82,8 @@ public function normalize($notice, $format = null, array $context = []): array
             'exampleMatchingUrl' => $notice->getExampleMatchingUrl(),
             'screenshot' => $this->getImageAbsoluteUrl($notice, 'screenshotFile'),
             'ratings' => [
-                'likes' => $notice->getLikedRatingCount(),
-                'dislikes' => $notice->getDislikedRatingCount(),
+                'likes' => $notice->getLikedCount(),
+                'dislikes' => $notice->getDislikedCount(),
             ],
             'created' => self::formatDateTime($notice->getCreated()),
             'modified' => self::formatDateTime($notice->getUpdated()),
diff --git a/symfony.lock b/symfony.lock
index 85f7c527..55d1a06b 100644
--- a/symfony.lock
+++ b/symfony.lock
@@ -596,6 +596,18 @@
             "ref": "fadbfe33303a76e25cb63401050439aa9b1a9c7f"
         }
     },
+    "symfony/messenger": {
+        "version": "4.3",
+        "recipe": {
+            "repo": "github.com/symfony/recipes",
+            "branch": "master",
+            "version": "4.3",
+            "ref": "e9a414b113ceadbf4e52abe37bf8f1b443f06ccb"
+        },
+        "files": [
+            "config/packages/messenger.yaml"
+        ]
+    },
     "symfony/mime": {
         "version": "v4.4.15"
     },
diff --git a/tests/Controller/Api/V3/PostNoticeRatingActionTest.php b/tests/Controller/Api/V3/PostNoticeRatingActionTest.php
index a7174b36..121b3e81 100644
--- a/tests/Controller/Api/V3/PostNoticeRatingActionTest.php
+++ b/tests/Controller/Api/V3/PostNoticeRatingActionTest.php
@@ -11,6 +11,7 @@
 use Doctrine\ORM\EntityManagerInterface;
 use PHPUnit\Framework\TestCase;
 use Symfony\Component\HttpFoundation\Request;
+use Symfony\Component\Messenger\MessageBus;
 use Symfony\Component\Serializer\SerializerInterface;
 
 class PostNoticeRatingActionTest extends TestCase
@@ -45,7 +46,7 @@ public function testInvoke(): void
 
         $action = new PostNoticeRatingAction($serializer, $noticeRepository, $entityManager);
 
-        $response = $action($request);
+        $response = $action($request, new MessageBus());
         $this->assertEquals('', $response->getContent());
         $this->assertEquals(204, $response->getStatusCode());
     }
diff --git a/translations/messages.fr.yml b/translations/messages.fr.yml
index 56b935ac..0107cf52 100644
--- a/translations/messages.fr.yml
+++ b/translations/messages.fr.yml
@@ -42,20 +42,20 @@ title:
 notices:
   id: id
   contributor: Contributeur
-  relayers: Relayeurs
+  relayers: 🔃
   message: Message
   visibility: Visibilité
   note: Note privée
   screenshot: Capture d’écran
   screenshot.help: "612x480 pixels, JPG, PNG"
-  matchingContexts: Ensemble de pages cibles
-  badgedRatingCount: Badge
-  displayedRatingCount: Aperçu
-  unfoldedRatingCount: Détail
-  clickedRatingCount: Hyperlien
-  likedRatingCount: Aimé
-  dislikedRatingCount: Déplu
-  dismissedRatingCount: Supprimé
+  matchingContexts: 🎯
+  badgedCount: 🟢
+  displayedCount: 🗨️
+  unfoldedCount: 👁
+  clickedCount: 🔗
+  likedCount: 👍
+  dislikedCount: 👎
+  dismissedCount: 🗑️
   created: Crée
   updated: Modifiée
   expires: Expire