HTTP cache management

HTTP cache managers

Cache policies

class cubicweb.web.httpcache.NoHTTPCacheManager(view)

default cache manager: set no-cache cache control policy

class cubicweb.web.httpcache.MaxAgeHTTPCacheManager(view)

max-age cache manager: set max-age cache control policy, with max-age specified with the cache_max_age attribute of the view

class cubicweb.web.httpcache.EtagHTTPCacheManager(view)

etag based cache manager for startup views

• etag is generated using the view name and the user’s groups

• set policy to ‘must-revalidate’ and expires to the current time to force revalidation on each request

class cubicweb.web.httpcache.EntityHTTPCacheManager(view)

etag based cache manager for view displaying a single entity

• etag is generated using entity’s eid, the view name and the user’s groups

• get last modified time from the entity definition (this may not be the entity’s modification time since a view may include some related entities with a modification time to consider) using the last_modified method

Exception

exception cubicweb.web.httpcache.NoEtag

an etag can’t be generated

Helper functions

cubicweb.web.httpcache.set_http_cache_headers(self)