nuster
A high performance HTTP proxy cache server and RESTful NoSQL cache
...It is 100% compatible with HAProxy and takes full advantage of the ACL functionality of HAProxy to provide a fine-grained caching policy based on the content of request, response or server status. nuster can be used as an HTTP/TCP load balancer just like HAProxy. nuster can also be used as a RESTful NoSQL cache server, using HTTP POST/GET/DELETE to set/get/delete Key/Value objects. It can be used as an internal NoSQL cache that sits between your application and a database like Memcached or Redis as well as a user-facing NoSQL cache that sits between the end-user and your application. It supports headers, and cookies, so you can store per-user data to the same endpoint.