gistfile1.js

SessionManager.prototype.cleanup = function(){
		var sessionExpiration,
			 now = Date.now(),
			 next = Infinity;
		
		sys.log("--- Cleaning Up. SessionStore Length:"+ size(this._sessionStore));
		
		for(var sid in this._sessionStore){
			if(Object.prototype.hasOwnProperty.call(this._sessionStore, sid)){
				
				sessionExpiration = this._sessionStore[sid].expires;
				
				sys.log("--- Checking: "+sid+": "+(sessionExpiration-now));
				
				
				
				if(sessionExpiration < now){
					sys.log(">>> Removing: "+sid+": "+(sessionExpiration-now));
					//delete this._sessionStore[sid];
				} else {
					next = next > sessionExpiration-now ? sessionExpiration-now : next;
					sys.log("--- Next Cleanup changed to "+next);
				}
			}
		}
		
		sys.log("+++ Cleaned Up. SessionStore Length:"+ size(this._sessionStore));
		
		if(next < Infinity){
			sys.log(">>> Next Cleanup in: "+next);
			setTimeout(this.cleanup, next);
		} else {
			sys.log(">>> No More Cleanups. ");
		}
	};

gistfile2.txt

$ node demo.js 
06/11/2009 22:42:39:0365	>>> Created Session: QM48QsY4wYgcQAo80Y8IoY4s	Expires: 06/11/2009 22:42:49:0362
06/11/2009 22:42:39:0366	--- Cleaning Up. SessionStore Length:1
06/11/2009 22:42:39:0366	--- Checking: QM48QsY4wYgcQAo80Y8IoY4s: 9996
06/11/2009 22:42:39:0366	--- Next Cleanup changed to 9996
06/11/2009 22:42:39:0366	+++ Cleaned Up. SessionStore Length:1
06/11/2009 22:42:39:0366	>>> Next Cleanup in: 9996
06/11/2009 22:42:49:0359	--- Cleaning Up. SessionStore Length:0
06/11/2009 22:42:49:0360	+++ Cleaned Up. SessionStore Length:0
06/11/2009 22:42:49:0360	>>> No More Cleanups.