Static Versioning

Keywords: cache busting, static assets hash, assets versioning, version query param

In production, static() appends a content hash to static URLs for cache busting.

Usage

In templates:

<link rel="stylesheet" href="{{ static('css/app.css') }}">

Development output: /css/app.css

Production output: /css/app.css?v=a1b2c3d4

The hash is the first 8 characters of the file’s MD5 digest. It’s computed once and cached for the lifetime of the process.

The query string (?v=...) is ignored by the static file server since it uses PATH_INFO, not QUERY_STRING.

S3 / CDN Cloud Serving ⭐ NEW in v0.1.7

If you want to host your static assets on S3 or a CDN in production, Asok can automatically rewrite your static URLs.

  1. Configure your S3 storage backend in .env (see File Storage for details).

  2. Enable static S3 serving:

ASOK_SERVE_STATIC_FROM_S3=true

When enabled, the static() helper prefixes URLs with your S3 bucket or CDN domain:

  • Without custom domain: https://my-bucket.s3.us-east-1.amazonaws.com/css/app.css?v=a1b2c3d4

  • With custom CDN domain: https://cdn.myapp.com/css/app.css?v=a1b2c3d4