Walmart has also jumped the Node.js bandwagon and put a lot of effort in moving (parts of?) their sites to the async JS framework. In that course they encountered a memory that apparently was located in the Node.js core. After Eran Hammer of Walmart “had been tracking [the bug] down for months” (!) the turned to cloud provider Joyent, who went to employ Node.js founder Ryan Dahl and sponsoring Node.js development. They also offer commercial support for Node.js if you so wish. In an epic bug hunt several Joyent engineers were able to track down the Node.js memory leak and fix it, hopefully for good.