#Cache Responses

HTTP responses should be cached locally according to their cache-control headers. Especially once Rhapsode starts supporting hyperlinks.

This could be developed as an independant project and integrated in!

#Caching headers

• CacheControl, legacy Pragma: no-cache
• Expires, may also be set via CacheControl or Last-Modified
• Etag - echo back in If-None-Match
• Last-Modified - echo back in If-Modified-Since
• Vary - indicates which headers to compare for equality before using a cache.

Use cached data for 304 responses.

#Implementation

I'd store an index file, with cached bodies stored seperately.

There'd be four parts to implementing the cache:

1. Annotating the request.
2. Loading cached data for 304 responses.
3. Storing cache responses.

GNOME's implementation: https://github.com/GNOME/libsoup/blob/mainline/libsoup/soup-cache.c