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complicated / too many steps","tooComplicatedTooManySteps","thumb-down"],["Out of date","outOfDate","thumb-down"],["Samples / code issue","samplesCodeIssue","thumb-down"],["Other","otherDown","thumb-down"]],["Last updated 2025-08-22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 usage across multiple versions.\u003c/p\u003e\n"],["\u003cp\u003eThe latest release candidate version is \u003ccode\u003e2.37.0-rc\u003c/code\u003e, and the page includes documentation for versions from \u003ccode\u003e2.11.0\u003c/code\u003e to the latest.\u003c/p\u003e\n"],["\u003cp\u003e\u003ccode\u003eSessionPoolKeepAliveIntervalOption\u003c/code\u003e is used to configure the frequency at which sessions are refreshed to prevent garbage collection by the backend.\u003c/p\u003e\n"],["\u003cp\u003eThe recommended interval for refreshing sessions should be less than 60 minutes, with some buffer time added, as the backend GC collects sessions older than 60 minutes.\u003c/p\u003e\n"],["\u003cp\u003eThe type of the alias is std::chrono::seconds.\u003c/p\u003e\n"]]],[],null,[]]
