Judy Arrays allow for fast and memory efficient access to in-memory hash tables. This specific Judy implementation is based on work by Karl Malbrain released via the New BSD license. The original work is available Here. Some code cleanup was done to allow for clean compilation with g++.
Instantiation is slow, but continued use shows speed increases over native v8::Array implementation.
For more information, see Faster (sometimes) Associative Arrays with Node.js.
node-gyp configure build
There are a couple of tests, as well as a couple of benchmarks to compare against native associative arrays.
cd tests node big.js node multiple.js
cd benchmark node native.js node judy.js node native.js --count=2000 node judy.js --count=2000
var judy = require('judy'); var arr = new judy.Judy(); arr.set("some key", "some value"); var value = arr.get("some key"); arr.delete("some key");