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  1. Core Server
  2. SERVER-82707

Improve CatalogCache eviction policy

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    • Type: Icon: Improvement Improvement
    • Resolution: Unresolved
    • Priority: Icon: Major - P3 Major - P3
    • None
    • Affects Version/s: None
    • Component/s: None
    • Catalog and Routing
    • CAR Team 2024-01-22, CAR Team 2024-02-05, CAR Team 2024-02-19, CAR Team 2024-03-04, CAR Team 2024-03-18, CAR Team 2024-04-01, CAR Team 2024-05-13, CAR Team 2024-05-27, CAR Team 2024-07-22, CAR Team 2024-08-05, CAR Team 2024-08-19, CAR Team 2025-01-06
    • 3

      Currently the sharding catalog cache eviction policy is LRU with a hardcoded capacity of 10k entries. There are some improvements we could consider:

      • Making the capacity configurable.
      • Considering the size of the cached entry, which may vary wildly depending on each collection routing table size.
      • Being more aggressive in evicting long-unused entries.

            Assignee:
            sulabh.mahajan@mongodb.com Sulabh Mahajan
            Reporter:
            jordi.serra-torrens@mongodb.com Jordi Serra Torrens
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              Created:
              Updated: