What is Judy? Judy is a C library that provides a state-of-the-art core technology that implements a sparse dynamic array. Judy arrays are declared simply with a null pointer. A Judy array consumes memory only when it is populated, yet can grow to take advantage of all available memory if desired. Judy's key benefits are scalability, high performance, and memory efficiency. A Judy array is extensi

A 10-MINUTE DESCRIPTION OF HOW JUDY ARRAYS WORK AND WHY THEY ARE SO FAST By Doug Baskins, doug@sourcejudy.com October 16, 2001, Revised July 2002 As the inventor of the Judy algorithm I've been asked repeatedly, "What makes Judy so fast?" The answer is not simple, but finally I can share all of the details. (In June 2002, Judy was opened sourced with a LGPL license and hosted at http://sourceforge