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Hello operators,

Takashi Kajinami noticed that cinder's RateLimitingMiddleware class 
lives among the legacy v2 classes and should be moved to live with the 
v3 classes, but then it occurred to him that maybe it should simply be 
deprecated and removed [0].

There are a few reasons to believe that nobody is actually using this 
functionality, for example, it's not included in the default 
api-paste.ini file, this middleware no longer exists in Nova, it gives 
you inexact behavior with multiple API nodes, etc.

We discussed this topic at today's cinder meeting and decided to ask 
whether anyone is using the RateLimitingMiddleware with cinder before 
deprecating it for removal.

If it's going to be deprecated, we'd like to do it in Xena, so please 
reply to this email or leave a comment on the deprecation patch [1] (or 
preferably both) before 23:59 UTC on Tuesday 14 September 2021.

Thank you!


[0] https://bugs.launchpad.net/cinder/+bug/1942696
[1] https://review.opendev.org/c/openstack/cinder/+/807469