[Gorilla web toolkit](http://www.gorillatoolkit.org/) 提供了好几个Golang Web开发工具，本站就使到了一些，很不错。
工具列表：
- [gorilla/context](http://www.gorillatoolkit.org/pkg/context) stores global request variables.
- [gorilla/mux](http://www.gorillatoolkit.org/pkg/mux) is a powerful URL router and dispatcher.
- [gorilla/reverse](http://www.gorillatoolkit.org/pkg/reverse) produces reversible regular expressions for regexp-based muxes.
- [gorilla/rpc](http://www.gorillatoolkit.org/pkg/rpc) implements RPC over HTTP with codec for JSON-RPC.
- [gorilla/schema](http://www.gorillatoolkit.org/pkg/schema) converts form values to a struct.
- [gorilla/securecookie](http://www.gorillatoolkit.org/pkg/securecookie) encodes and decodes authenticated and optionally encrypted cookie values.
- [gorilla/sessions](http://www.gorillatoolkit.org/pkg/sessions) saves cookie and filesystem sessions and allows custom session backends.
其中，本站使用的mux经过了修改，增加了过滤器链，参见:[https://github.com/studygolang/mux](https://github.com/studygolang/mux)
