xitrum 是一个 Scala 的 Web 框架，基于 Netty 开发。结构如下图所示：
+-----------------+
| Your app |
+-----------------+
| Xitrum | <-- Hazelcast --> Other instances
| +-------------+ |
| | Action/View | |
| +-------------+ |
+-----------------+
| Netty |
| +-------------+ |
| | HTTP Server | |
| +-------------+ |
+-----------------+
主要特性：
It fills the gap between Scalatra and Lift: more powerful than Scalatra and easier to use than Lift. You can easily create both RESTful APIs and postbacks. Xitrum is controller-first like Scalatra, not view-first like Lift.
Typesafe, in the spirit of Scala.
Asynchronous, in the spirit of Netty.
Stateless, by default sessions are not stored on server.
In-process and distribued cache using Hazelcast, you don't need separate cache servers.
Scalable Comet, you can scale Comet to multiple servers.
项目主页：https://github.com/ngocdaothanh/xitrum
下载地址：https://github.com/ngocdaothanh/xitrum/tags
来自:开源中国社区
