Super simple local in memory cache using java.util.concurrent package for high performance thread-safe design.

It's only 75 lines of code including comments and getters. View code

Features

• Super simple using only a few constructs from java.util.concurrent package
• Supports maximum cache size
• Supports item expiration

Getting Started

Very easy:

// Create a new cache
KittyCache cache = new KittyCache(5000); // 5000 is max number of objects
// Put an object into the cache
cache.put("mykey", value, 500); // 500 is time to live in seconds
// Get an object from the cache
value = cache.get("mykey");

Performance

I've only tested again Ehcache, but here's 3 separate runs, each with max cache size of 10,000 elements and all in memory. All values in ms. (see source for actual test code).

Performance Run 1

Test 10,000 Puts ehcache=44 kitty=40

Test 100,000 Puts ehcache=652 kitty=159

Test 1,000,000 Puts ehcache=6701 kitty=1594

Test 100 Thread Concurrency and 1,000,000 Puts ehcache=310385 kittycache=97210

Performance Run 2

Test 10,000 Puts ehcache=47 kitty=39

Test 100,000 Puts ehcache=681 kitty=116

Test 1,000,000 Puts ehcache=6593 kitty=1213

Test 100 Thread Concurrency and 1,000,000 Puts ehcache=294903 kittycache=92105

Performance Run 3

Test 10,000 Puts ehcache=73 kitty=57

Test 100,000 Puts ehcache=730 kitty=115

Test 1,000,000 Puts ehcache=7028 kitty=1002

Test 100 Thread Concurrency and 1,000,000 Puts ehcache=304804 kittycache=92594

What's with the name?

I know, the name is lame. I was just thinking of something tiny and fast and kitty cat came to mind and.... I don't even like cats. ;) Kidding, they are cute... sometimes.