Janus Chow created RATIS-2341:
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Summary: Introduce LocalLease for followers
Key: RATIS-2341
URL: https://issues.apache.org/jira/browse/RATIS-2341
Project: Ratis
Issue Type: Improvement
Reporter: Janus Chow
The current logic of ReadIndex limits the performance of FollowerRead.
In production, the vast majority of requests are for old data, so running the
readIndex logic for every request becomes somewhat wasteful.
This ticket is to introduce LocalLease for followers, so that followers can
decide if it's catched up with Leader, and application can reasonably make use
of this information.
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