troopjs/troopjs-core — pull request #16 by normanzb (2012-06-03 06:31:28+00:00)
Title: Making ajax service singleton

refrain from duplicated ajax call when ajax service constructor is called multiple times

let's say our query service heavily depend on ajax service, we don't wait for application widget to instantiate all services one by one. instead, we call instantiate ajax service inside query service.