dotnicht/ssr-workers

Rust based Cloudflare Worker with SSR

SSR WorkeRS

Small demo of creating a Cloudflare Worker to render a Sycamore application and hydrate it client side.

The demo needs:

• Trunk
• Wrangler
• npx / miniflare (optional)

Usage

Running locally:

$ npx miniflare@next

Building just the app:

$ cd app
$ trunk build # or watch

Watching for changes of the worker:

$ cd worker
$ cargo watch -- worker-build --dev
# Second Terminal
$ npx miniflare@next --watch

Notes:

• There is a very weird bug that corrupts the returned HTML, if I don't clone the string.
• The Cloudflare builtin router is not very good for this usecase, due to the lack of support for multiple and overlapping wildcard matches, e.g. a route for static files /*.*.
• There is no good way to modify <meta> tags and data, this might need an additional templating layer.
• A very minimal setup already needs 500kb of only 1000kb available, this might not leave enough space for an actual application.
• I dont currently have a way to watch the files and auto-reload the worker, this is annoying!
• The app entrypoint needs sycamore::hydrate_to, this does not work in standalone mode without SSR, this is annoying!
• A lot of APIs are missing, incomplete or not usable (e.g. needs git version to access KV value as bytes, no cache API).
• workers-rs feels like a PoC not like something people actually used.