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 webpage provides documentation for the `SessionPoolKeepAliveIntervalOption` within the Google Cloud Spanner C++ library, spanning versions from 2.11.0 to 2.37.0-rc."],["The `SessionPoolKeepAliveIntervalOption` is used to configure the frequency at which sessions are refreshed, preventing them from being garbage collected by the backend."],["The garbage collection process on the backend removes objects older than 60 minutes, so intervals below this value are recommended for the `SessionPoolKeepAliveIntervalOption`."],["This option is a type alias for `std::chrono::seconds`, allowing for the specification of refresh intervals in seconds."]]],[]]
