AnkeshThakur commented on issue #8361:
URL: 
https://github.com/apache/incubator-devlake/issues/8361#issuecomment-2754859599

   Overall time is reduced from 10 hours to 5 hours. And the Dora step's time 
is reduced from ~9 hours to ~4 hours. I have not identified the index that 
performed best. I need to observe it more. But I had added these indexes:
   
   ```
   
   CREATE INDEX idx_cicd_deployment_commits_prev_success_deployment_commit_id 
ON cicd_deployment_commits(prev_success_deployment_commit_id);
   CREATE INDEX idx_cicd_deployment_commits_environment ON 
cicd_deployment_commits(environment);
   CREATE INDEX idx_commits_diffs_new_commit_sha ON 
commits_diffs(new_commit_sha);
   CREATE INDEX idx_commits_diffs_old_commit_sha ON 
commits_diffs(old_commit_sha);
   CREATE INDEX idx_cicd_deployment_commits_commit_sha ON 
cicd_deployment_commits(commit_sha);
   CREATE INDEX idx_cicd_deployment_commits_result ON 
cicd_deployment_commits(RESULT);
   CREATE INDEX idx_commits_diffs_composite ON commits_diffs (new_commit_sha, 
old_commit_sha);
   ```
   
   My hunch is that it is idx_commits_diffs_composite but I am not certain.


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