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complicated / too many steps","tooComplicatedTooManySteps","thumb-down"],["Out of date","outOfDate","thumb-down"],["Samples / code issue","samplesCodeIssue","thumb-down"],["Other","otherDown","thumb-down"]],["Last updated 2025-08-07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\u003eThe latest version available is 5.0.0-beta05, and the content details version history for \u003ccode\u003eGoogle.Cloud.Spanner.V1.RequestOptions.Types.Priority\u003c/code\u003e, ranging from version 3.5.0 up to the latest.\u003c/p\u003e\n"],["\u003cp\u003eThe \u003ccode\u003ePriority\u003c/code\u003e enum defines the relative importance of requests, with possible values including \u003ccode\u003eHigh\u003c/code\u003e, \u003ccode\u003eLow\u003c/code\u003e, \u003ccode\u003eMedium\u003c/code\u003e, and \u003ccode\u003eUnspecified\u003c/code\u003e, where \u003ccode\u003eUnspecified\u003c/code\u003e is the equivalent to \u003ccode\u003eHigh\u003c/code\u003e.\u003c/p\u003e\n"],["\u003cp\u003eThe priority setting acts as a hint to the Cloud Spanner scheduler, but does not guarantee the order or absolute priority of execution.\u003c/p\u003e\n"],["\u003cp\u003eCertain aspects of write operations are always treated as \u003ccode\u003eHigh\u003c/code\u003e priority, which may cause increased workload at the high priority level, and can cause priority inversions where a lower request is fulfilled first.\u003c/p\u003e\n"],["\u003cp\u003eThe priority of a given transaction made up of multiple operations is not guaranteed, as the Cloud Spanner scheduler will satisfy other constraints such as the order of the operations.\u003c/p\u003e\n"]]],[],null,[]]
