I only came across TCL as the scripting language used internally by the F5 (BigIP) load balancer. Writing irules was fine because they are usually one and done.

I only came across TCL as the scripting language used internally by the F5 (BigIP) load balancer. Writing irules was fine because they are usually one and done. It was tempting to try to do complicated things until you realized that was exactly the wrong place to try to fix the underlying problems of a broken web application.