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Next: 32.7.1 Http/Cache Up: 32. Web cache as Previous: 32.6 Web server

32.7 Web cache

Currently 6 types of web caches are implemented, including the base class Http/Cache. Its five derived subclasses implement 5 types of cache consistency algorithms: Plain old TTL, adaptive TTL, Omniscient TTL, Hierarchical multicast invalidation, and hierarchical multicast invalidation plus direct request.

In the following we'll only describe the base class Http/Cache, because all the subclasses involves discussion of cache consistency algorithms and it does not seem to be appropriate here.