heroku-node
As of node 2, the garbage collection defaults have changed such that
1.5 GB is consumed before garbage collection will occur. This is
especially problematic on platforms such as heroku which will force your
application to start swapping well before that limit is reached. Heroku
provides $WEB_MEMORY to let you know what that limit is. This wraps node
to inform it of that limit.
Installation
npm install -S heroku-nodeUsage
Use heroku-node foo or whatever your application is called for
your npm start script. If you're using a Procfile, be sure to include the
path, node_modules/.bin/heroku-node. Essentially, use heroku-node wherever
you'd use plain old node.