A couple of years ago, at WSO2 we implemented a new HTTP transport for WSO2 ESB. Requirements for this new transport can be summarized as follows: Ultra-fast, low latency mediation of HTTP requests. Supporting a very large number of inbound (client-ESB) and outbound (ESB-server) connections concurrently (we were looking at several thousand concurrent connections). Automatic throttling and graceful
![How the World's Fastest ESB was Made](https://cdn-ak-scissors.b.st-hatena.com/image/square/51526608be2cdd5fe9a05d3e01db8a61e4f576e6/height=288;version=1;width=512/http%3A%2F%2F1.bp.blogspot.com%2F-P8p6PFXHcRs%2FURFdRIY04zI%2FAAAAAAAAAXw%2FKLcNEIJfQAg%2Fw1200-h630-p-k-no-nu%2Fnhttp.png)