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  1. C Driver
  2. CDRIVER-4663

Eagerly create minPoolSize connections

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    • Type: Icon: New Feature New Feature
    • Resolution: Won't Do
    • Priority: Icon: Major - P3 Major - P3
    • None
    • Affects Version/s: None
    • Component/s: Performance
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      1. What would you like to communicate to the user about this feature?
      2. Would you like the user to see examples of the syntax and/or executable code and its output?
      3. Which versions of the driver/connector does this apply to?

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      1. What would you like to communicate to the user about this feature? 2. Would you like the user to see examples of the syntax and/or executable code and its output? 3. Which versions of the driver/connector does this apply to?

      The C/C++ driver's connection pool does not eagerly create connections even when the minPoolSize config is set. This is surprising behavior and has lead to difficult-to-diagnose performance issues when the first operation has wildly different performance from subsequent operations.

      What's more is that the driver spec seems to require this behavior:

      If minPoolSize is set, the Connection Pool MUST be populated until it has at least minPoolSize total Connections.

        1. main.c
          2 kB

            Assignee:
            Unassigned Unassigned
            Reporter:
            ryan.timmons@mongodb.com Ryan Timmons
            Votes:
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              Created:
              Updated:
              Resolved: