This was originally posted on the SHIFT developers blog.
First off - what is CORS? CORS is a means of allowing cross site requests. You can read up in lengthy detail on it’s features here. Simply put, it lets you be on one domain, and perform XMLHttpRequests to another, which is normally not allowed due to the Same Origin Policy.
The domains that may hit your server must be specified in your configuration.
Nginx
- A coworker pointed me to this Nginx module today. You can write a chat server without actually writing a server. The message thread below indicates incredible performance. If you’ve got more than 50K users and 9000 messages / second you might be able to upgrade your hardware, or at least load balance your channels between 2 servers. When I open 10,000 connections, it seems to behave quite nicely. Sending half a million messages, I am able to get a throughput of around 9,000 message per second.