How to make httplib2 cache readonly?

Question

The following code creates Http object with caching enabled:

http = httplib2.Http('cache')
r, b = http.request('http://google.com')

The following code creates Http object with caching enabled and if the resource has already been in the cache, its never requested again:

http = httplib2.Http('cache')
r, b = http.request('http://google.com',
        headers={'cache-control':'min-fresh=-1000000000'})

How do I modify these two samples for the cache is used but never updated?

Thanks

@BurhanKhalid I want to cache a few pages and then disable caching to save disk space and io time. — sshilovsky, Sep 30 '13 at 08:27

score 0 · Answer 1 · answered Feb 16 '15 at 11:13

You can pass a cache into the Http object you construct, if it implements these methods:

Cache.get(key)
Cache.set(key, value)
Cache.delete(key)

Wrap an instance of FileCache with an object that you retain a reference to. After your initial requests, change its behaviour so that get continues to work and set delegates to delete (so you never return a stale value).

How to make httplib2 cache readonly?

1 Answers1