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"]],[["Hard to understand","hardToUnderstand","thumb-down"],["Incorrect information or sample code","incorrectInformationOrSampleCode","thumb-down"],["Missing the information/samples I need","missingTheInformationSamplesINeed","thumb-down"],["Other","otherDown","thumb-down"]],["Last updated 2025-03-14 UTC."],[[["This page provides documentation for the `SessionPoolKeepAliveIntervalOption` in the Google Cloud Spanner C++ library, spanning multiple versions from 2.11.0 to the latest release candidate 2.37.0-rc."],["The `SessionPoolKeepAliveIntervalOption` is used to configure how frequently sessions are refreshed to prevent them from being garbage collected by the Spanner backend."],["The option is an alias for `std::chrono::seconds`, indicating that the keep-alive interval is specified in seconds."],["It is recommended that the configured interval be less than 60 minutes to prevent garbage collection by the backend, allowing for slack time for the refresh calls to take effect."]]],[]]
