I want to insert a piece of javascript in the clients websites to track various statistics (like crazyegg, intercom.io), but traffic related.
I was thinking of using IronMQ but I don't know how to call it from Javascript directly and I am affraid that making a request to my server (3Gb Ram) from sites that have tens of thousands of visitors / days can cripple the server when making too many javascript requests in the same time.