Dubbo proxy
Every configured dubbo proxy filter has statistics rooted at dubbo.<stat_prefix>. with the following statistics:
Implement custom filter based on the dubbo proxy filter
If you want to implement a custom filter based on the dubbo protocol, the dubbo proxy filter like HTTP also provides a very convenient way to expand, the first step is to implement the DecoderFilter interface, and give the filter named, such as testFilter, the second step is to add your configuration, configuration method refer to the following sample