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complicated / too many steps","tooComplicatedTooManySteps","thumb-down"],["Out of date","outOfDate","thumb-down"],["Samples / code issue","samplesCodeIssue","thumb-down"],["Other","otherDown","thumb-down"]],["Last updated 2025-08-22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\u003eThe webpage provides documentation for the \u003ccode\u003eSessionPoolKeepAliveIntervalOption\u003c/code\u003e within the Google Cloud Spanner C++ library, with version 2.37.0-rc being the latest release candidate.\u003c/p\u003e\n"],["\u003cp\u003eThis option is used to set the interval for refreshing sessions to prevent them from being garbage collected by the backend, ensuring sessions are kept alive.\u003c/p\u003e\n"],["\u003cp\u003eThe garbage collection occurs for sessions older than 60 minutes, so setting a refresh interval below that duration, with some buffer time, is recommended.\u003c/p\u003e\n"],["\u003cp\u003eThe \u003ccode\u003eSessionPoolKeepAliveIntervalOption\u003c/code\u003e is an alias for \u003ccode\u003estd::chrono::seconds\u003c/code\u003e, which means it is representing an amount of time.\u003c/p\u003e\n"],["\u003cp\u003eThe page lists the documentation across many different versions, going from 2.37.0-rc all the way down to 2.11.0.\u003c/p\u003e\n"]]],[],null,[]]
