Enter HAProxy. HAProxy is an incredibly versatile and powerful TCP/HTTP Load Balancer. We’ll use a tiny amount of its countless features. Using it as a simple TCP proxy sitting between our webserver and MySQL, we can take advantage of its neat queuing system and finally gain control of the maximum number of simultaneous connections that will reach our MySQL server. Let’s see how.

Box2DJS is a JavaScript port of Box2D Physics Engine. To tell the truth, this is converted from Box2DFlashAS3_1.4.3.1 in an automatic manner. (The reason why not Box2DFlashAS3_2.0.0 based is simply because I overlooked the renewal.)