symious opened a new pull request, #1296:
URL: https://github.com/apache/ratis/pull/1296
## What changes were proposed in this pull request?
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.
## What is the link to the Apache JIRA
https://issues.apache.org/jira/browse/RATIS-2341
## How was this patch tested?
Local performance test.
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