java disc based hashmap

Question

I\'m working on a web crawler (please don\'t suggest an existing one, its not an option). I have it working the way it is expected to. My only issue is that currently I\'m u

Answer 1

Chronicle Map is an embeddable, hash-based Java data store, persisting the data to disk (to a single file), which targets to be a drop-in replacement of ConcurrentHashMap (provides the same ConcurrentMap interface). Chronicle Map is the fastest store among similar solutions and features excellent read/write concurrency, scaling almost linearly to the number of available cores in the machine.

Disclaimer: I'm the developer of Chronicle Map.