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 2025-03-21 UTC."],[[["This page provides documentation for the `SessionPoolKeepAliveIntervalOption` within the Google Cloud Spanner C++ client library, spanning multiple versions."],["The latest version documented is 2.37.0-rc, with a range of versions extending back to 2.11.0, allowing you to pick the documentation for the version you need."],["The `SessionPoolKeepAliveIntervalOption` allows for configuring the time interval at which sessions are refreshed to prevent garbage collection by the backend."],["This type of alias is `std::chrono::seconds`, for time duration."]]],[]]
