Navigator cache for dotnet.wasm

[giraudremy]

Hi,

I have an uno Wasm application, and I compile it in AOT. The build generate a "dotnet.wasm" file which is over 100MB. To improve the application loading time, I added http headers to my Web server (expires max;add_header Cache-Control "public").
It works well on .clr files, but I always have the dotnet.wasm file which is systematically downloaded from the web server.

Is it possible to force caching this file?

Thank for reply

[jeromelaban]

Thanks for the question. Browsers are not configurable for this, though there are few options for this:

• Make sure that you have compression enabled for your server. The uno.wasm.bootstrap generates in-place compressed files (.br) to help for the size that you can use.
• Ensure that the linker is running properly, and removing unused code wherever possible
• Use Profiled AOT to only AOT compile the most used parts of your app.

[giraudremy]

Thank for reply.

To enable compression, it's web server configuration or it is option to set in csproj ? I'am using dotnet serve as web server, I have to launch it with -z|--gzip or -b|--brotli option ?

I'm going to try to activate the AOT profile again but I wasn't able to complete it last time.

Thanks for your help

[jeromelaban]

Compressing using on-the-fly methods is not particularly good for large files, as it will take a long time to generate. We do not explicitly support dotnet serve as file server either, as it does not provide support for pre-compressed files.

You'll need to use another server, like ones we document here.

[giraudremy]

Thank for the link, I will try to migrate to nginx with brotli. Do you have docker image to host wasm application with nginx ? I found only build Dockerfile on https://github.com/unoplatform/docker/blob/master/
If not I will create my own.

Thanks

[jeromelaban]

We do not have images for serving apps at this time, but if you have steps to create one, we'll be glad to take a contribution to https://platform.uno/docs/articles/how-to-host-a-webassembly-app.html!

[giraudremy]

Hi,

I'm creating a Docker image based on nginx with Brotli enabled and the configuration provided in the link. On my Wasm application that I generated over a year ago, it works very well, the compressed files are properly returned and cached by the browser because the .br files are in the same location as the uncompressed version.

Now on my updated application, I see that the compressed files are in _compressed_br and _compressed_gz folders and they don't have a .br extension for example. Is there a specific configuration to be done at the nginx level to serve the compressed files?

[giraudremy]

Ok I see the documentation, this because I have a web.config in my project with _compressed_br string.
I will use WasmShellCompressionLayoutMode to force inplace.

[giraudremy]

Hi,

I am happy to share with you my Docker image. This image is built upon NGINX and incorporates the Brotli module, enabling it to host a Wasm application. The NGINX configuration used in this setup is inspired by the recommendations provided by Uno.
DockerNginxBrotli.zip