Reference documentation and code samples for the Google Cloud Spanner v1 API enum RequestOptions.Types.Priority.
The relative priority for requests. Note that priority is not applicable
for [BeginTransaction][google.spanner.v1.Spanner.BeginTransaction].
The priority acts as a hint to the Cloud Spanner scheduler and does not
guarantee priority or order of execution. For example:
Some parts of a write operation always execute at PRIORITY_HIGH,
regardless of the specified priority. This may cause you to see an
increase in high priority workload even when executing a low priority
request. This can also potentially cause a priority inversion where a
lower priority request will be fulfilled ahead of a higher priority
request.
If a transaction contains multiple operations with different priorities,
Cloud Spanner does not guarantee to process the higher priority
operations first. There may be other constraints to satisfy, such as
order of operations.
[[["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complicated / too many steps","tooComplicatedTooManySteps","thumb-down"],["Out of date","outOfDate","thumb-down"],["Samples / code issue","samplesCodeIssue","thumb-down"],["Other","otherDown","thumb-down"]],["Last updated 2025-08-07 UTC."],[[["\u003cp\u003eThis documentation covers the \u003ccode\u003eRequestOptions.Types.Priority\u003c/code\u003e enum within the Google Cloud Spanner v1 API, detailing different priority levels for requests.\u003c/p\u003e\n"],["\u003cp\u003eThe available priority levels for requests are \u003ccode\u003eHigh\u003c/code\u003e, \u003ccode\u003eLow\u003c/code\u003e, \u003ccode\u003eMedium\u003c/code\u003e, and \u003ccode\u003eUnspecified\u003c/code\u003e, with \u003ccode\u003eUnspecified\u003c/code\u003e being equivalent to \u003ccode\u003eHigh\u003c/code\u003e priority.\u003c/p\u003e\n"],["\u003cp\u003eThe listed versions range from 3.5.0 up to the latest beta version 5.0.0-beta05, showing the historical development of this API component.\u003c/p\u003e\n"],["\u003cp\u003eThe priority settings do not guarantee execution order, as Spanner's scheduler uses them as hints and may prioritize operations differently based on internal constraints.\u003c/p\u003e\n"],["\u003cp\u003eThe documentation specifies that \u003ccode\u003ePriority\u003c/code\u003e is not applicable for \u003ccode\u003eBeginTransaction\u003c/code\u003e and some parts of a write operation will always be at \u003ccode\u003ePRIORITY_HIGH\u003c/code\u003e.\u003c/p\u003e\n"]]],[],null,[]]
