This doc is still under development

all strategy uses version passed to options as a cache tag. When version changes, old version cache is removed and new files are downloaded. Of course if files has same name were not changed (304 status returned), then probably browser won't download them again and will just update cache.
changed strategy is more advanced than all or hash. To work properly it requires output assets to have unique names between compilations, e.g. file's unique hash in its name. With this strategy enabled, index.html file (or other files without dynamic name) should be placed in main section of the cache, otherwise they won't be revalidated.
- For ServiceWorker this means that only new files will be downloaded and missing files deleted from the cache.
- For AppCache it's basically same as previous strategies since AppCache revalidates all the assets. 304 HTTP status rule of course still works.

Provide feedback