Add Index on users.username and users.email to Accelerate Query
Created by: wtune
Problem
Missing index on table users column username and email might make the underlying query issued via UserRepository#findByUsername&findByEmail slow.Since it's also easy to find that we always read users by username or email and sometimes insert or update, the performance impact for write operations is acceptable under common cases.
Possible Solution
Add Index on users.username and users.email