dubbo

• I have searched the issues of this repository and believe that this is not a duplicate.
• I have checked the FAQ of this repository and believe that this is not a duplicate.

Environment

• Dubbo version: 3.0.0
• Operating System version: Windows 11 (Dev Channel,10.0.22000.120)
• Ja

我们鼓励使用英文，如果不能直接使用，可以使用翻译软件，您仍旧可以保留中文原文。
We recommend using English. If you are non-native English speaker, you can use the translation software.

Which Component
eg. Nacos Discovery, Sentinel

Is your feature request related to a problem? Please describe.
Feign限流降级好像只支持url粒度，能否支持服务粒度，就像对RestTemplate支持两种粒度一样(Feign's current limiting degradation seems to only support URL granularit

每次想重新定义derby-data的目录，都需要重新改正多个变量。能否用一个变量统一一下路径？

What would you like to be added:

I know give a name of a var is a very difficult problem in computer science. However, just one character for a receiver name should be enough.

the shorter receiver name of AttachmentMatchJudger in router/v3router/judger/attachment_match_judger.go should not be 'amj'. The same