Bust cache on static assets via query string params.
Via pip:
pip install pyramid_cachebust
Add to your configurator via the include method:
config = Configurator()
config.include('pyramid_cachebust')
config.add_static_view('static', 'myapp:static')
Now pyramid.request.Request has two new methods: cachebusted_path and cachebusted_url. These methods are wrappers for request.static_path and request.static_url, with the addition of tagging on cache-busting query parameters:
request.cachebusted_path('myapp:static/file.css')
>>> '/static/file.css?_=394a82fdd72eed3ac45d113bd8af554e'
request.cachebusted_url('myapp:static/file.css')
>>> 'http://localhost/static/file.css?_=394a82fdd72eed3ac45d113bd8af554e'
The querystring gets generated in one of two ways. The default is an MD5 hexdigest of the file contents. The two alternatives are the file's mtime ('mtime') or the time of app init ('init'). Generation of the hash/lookup of the mtime happens once per asset. Results are cached and served upon resultant calls.
To place in your Pyramid .ini:
| name | type | default | description |
|---|---|---|---|
| cachebust.enabled | bool | true | toggles plugin on/off |
| cachebust.reload_files | bool | false | when true, cache is ignored and query param is calculated on every request |
| cachebust.method | str | md5 | method of file calculation (md5, mtime or init) |
| cachebust.param_key | str | _ | key of query param |
Thanks for your contributions:
- Richard Maisano (maisano)
- Marius Gedminas (mgedmin)