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[ruby] Optimizations for massive improvement in SQL statements and CPU use - #1566

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brandur wants to merge 6 commits into

brandur-ruby-drain-scaling

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[ruby] Optimizations for massive improvement in SQL statements and CPU use#1566
brandur wants to merge 6 commits into
masterfrom
brandur-ruby-drain-scaling

Commits on Nov 2, 2026
- [ruby] don't lease Active Record connections to job threads
  
  authored and
  brandur
  committed
  6ae9283
- [ruby] Keep maintenance error backoff separate from producers
  
  authored and
  brandur
  committed
  6d0434e
- [ruby] return job rows from claim and finish updates
  
  authored and
  brandur
  committed
  5e3ff52
- [ruby] Adapt connection borrowing to the current runtime
  brandur
  committed
  c23d568
- [ruby] Add a reproducible Active Job drain benchmark
  brandur
  committed
  3a4f4d0
- [ruby] Consolidate drain optimization changelog entry
  brandur
  committed
  9935b0e