Option for google::cloud::Options to set the interval at which we refresh sessions so they don't get collected by the backend GC.
The GC collects objects older than 60 minutes, so any duration below that (less some slack to allow the calls to be made to refresh the sessions) should suffice.
[[["Easy to understand","easyToUnderstand","thumb-up"],["Solved my problem","solvedMyProblem","thumb-up"],["Other","otherUp","thumb-up"]],[["Missing the information I need","missingTheInformationINeed","thumb-down"],["Too complicated / too many steps","tooComplicatedTooManySteps","thumb-down"],["Out of date","outOfDate","thumb-down"],["Samples / code issue","samplesCodeIssue","thumb-down"],["Other","otherDown","thumb-down"]],["Last updated 2025-08-22 UTC."],[[["\u003cp\u003eThis page provides a list of versioned documentation for the \u003ccode\u003eSessionPoolKeepAliveIntervalOption\u003c/code\u003e in the Google Cloud Spanner C++ client library.\u003c/p\u003e\n"],["\u003cp\u003eThe latest release candidate documentation is available for version 2.37.0-rc, with a total of 27 versioned documentation listings.\u003c/p\u003e\n"],["\u003cp\u003e\u003ccode\u003eSessionPoolKeepAliveIntervalOption\u003c/code\u003e is designed to configure the refresh interval for sessions, preventing them from being collected by the backend garbage collector (GC).\u003c/p\u003e\n"],["\u003cp\u003eThe type alias for this option is \u003ccode\u003estd::chrono::seconds\u003c/code\u003e, indicating that the refresh interval is specified in seconds.\u003c/p\u003e\n"],["\u003cp\u003eThe GC will collect objects older than 60 minutes, so the interval should be less than 60 minutes with some slack to complete the session refresh calls.\u003c/p\u003e\n"]]],[],null,[]]
