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complicated / too many steps","tooComplicatedTooManySteps","thumb-down"],["Out of date","outOfDate","thumb-down"],["Samples / code issue","samplesCodeIssue","thumb-down"],["Other","otherDown","thumb-down"]],["Last updated 2025-08-22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 webpage provides documentation for the \u003ccode\u003eSessionPoolKeepAliveIntervalOption\u003c/code\u003e within the Google Cloud Spanner C++ client library, detailing its functionality across various versions.\u003c/p\u003e\n"],["\u003cp\u003eThe latest version available is \u003ccode\u003e2.37.0-rc\u003c/code\u003e, with a comprehensive list of versions ranging down to \u003ccode\u003e2.11.0\u003c/code\u003e.\u003c/p\u003e\n"],["\u003cp\u003e\u003ccode\u003eSessionPoolKeepAliveIntervalOption\u003c/code\u003e is used within \u003ccode\u003egoogle::cloud::Options\u003c/code\u003e to manage how often sessions are refreshed, ensuring they are not garbage collected by the backend.\u003c/p\u003e\n"],["\u003cp\u003eThe optimal refresh interval for \u003ccode\u003eSessionPoolKeepAliveIntervalOption\u003c/code\u003e should be less than 60 minutes, to prevent session collection by the garbage collector, accounting for the time needed to complete refresh calls.\u003c/p\u003e\n"],["\u003cp\u003eThis option is represented by a \u003ccode\u003estd::chrono::seconds\u003c/code\u003e type.\u003c/p\u003e\n"]]],[],null,[]]
