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Resolve "Tape server querying DB at very high rate"

Michael Davis requested to merge 155-tape-server-querying-db-at-very-high-rate into main

Summary

This MR is to fix this specific cause of high DB queries: #155 (comment 6266313)

Requires manual tests in pre-production

NO. The high query rate is only evidenced when there are many tape servers and a high rate of retrieve requests. Best way to test this is in production:

  1. Get an updated query rate from Nilo
  2. Deploy the version of CTA containing this fix
  3. Get a new query rate and it should hopefully be much lower

References

Closes #155 (closed)

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