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