Serve precompressed *.gz file

[Eason0729]

When using leptos-build, run with --pre-compress will compress all static wasm/js/css...

For example:

tree /site/
/site/
├── favicon.ico
├── favicon.ico.br
├── favicon.ico.gz
└── pkg
    ├── mdoj.css
    ├── mdoj.css.br
    ├── mdoj.css.gz
    ├── mdoj.js
    ├── mdoj.js.br
    ├── mdoj.js.gz
    ├── mdoj.wasm
    ├── mdoj.wasm.br
    └── mdoj.wasm.gz

By just serving compressed content, we can save about 70% of bandwidth.

However, leptos-build won't help you serving them, you need to write them in actual code.

[KAIYOHUGO]

I will take this.

[KAIYOHUGO]

Related https://docs.rs/actix-web/4.8.0/actix_web/middleware/struct.Compress.html

[Eason0729]

It's okay to use middleware to compress on fly(low level compression ratio for more speed).

But if possible, it better to use pre-compressed file provieded by leptos build(high level compression ratio).

I would consider this issue low priority.

[Eason0729]

You can check Accept-Encoding: gzip, deflate, br, zstd, response with corresponding header (.set_content_encoding(ContentEncoding::Gzip) and binary content.

[KAIYOHUGO]

It's okay to use middleware to compress on fly(low level compression ratio for more speed).

I mean this section (about pre compressed)
https://docs.rs/actix-web/4.8.0/actix_web/middleware/struct.Compress.html#pre-compressed-payload

[KAIYOHUGO]

Maybe we should utilize GitHub's issue tagging system

[Eason0729]

Maybe we should utilize GitHub's issue tagging system

For low priority or just categorize issue?

[Eason0729]

I would work on a example accommodating our use case.

Such that it includes those logic:

1. Determine which content encoding can be used.
2. Determine whether such file (Ex: for http://example.com/pkg/mdoj.wasm and gzip, we should use /pkg/mdoj.wasm.gz) exist.
3. Serve the file without reaching file directly.

[Eason0729]

After some offline discussion, we conclude that we could have pre-compressed enabled with axum:

Reason for such decision:

1. axum have bulit in support(doesn't need to write much of code)
2. using axum in this project improve compile(tonic and axum has a lot of common dependency)

Also of note, there is a pull request attending to add pre-compressed static file support, but leave in review for about 1.5 years.