The base class for the Spanner library transaction rerun policies.
The Client::Commit() functions (there are several overloads) consume a callable to create mutations or a list of mutations. Commit() creates a transaction and applies the mutations. If the transaction fails, an instance of this class is used to control whether the transaction will be attempted again.
Functions
clone() const
Creates a new instance of the policy, reset to the initial state.
[[["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complicated / too many steps","tooComplicatedTooManySteps","thumb-down"],["Out of date","outOfDate","thumb-down"],["Samples / code issue","samplesCodeIssue","thumb-down"],["Other","otherDown","thumb-down"]],["Last updated 2025-08-22 UTC."],[[["\u003cp\u003eThis webpage provides documentation for the \u003ccode\u003eTransactionRerunPolicy\u003c/code\u003e class within the Google Cloud Spanner C++ client library, specifically for version 2.28.0, with links to other versions.\u003c/p\u003e\n"],["\u003cp\u003eThe \u003ccode\u003eTransactionRerunPolicy\u003c/code\u003e class determines if a transaction should be retried after a failure, using methods to evaluate failure status and determine if a retry is appropriate.\u003c/p\u003e\n"],["\u003cp\u003eThe \u003ccode\u003eClient::Commit()\u003c/code\u003e function uses this policy to handle transaction retries when applying mutations to the database.\u003c/p\u003e\n"],["\u003cp\u003eKey functions of this class include \u003ccode\u003eclone()\u003c/code\u003e, \u003ccode\u003eOnFailure()\u003c/code\u003e, \u003ccode\u003eIsExhausted()\u003c/code\u003e, and \u003ccode\u003eIsPermanentFailure()\u003c/code\u003e, which are used to manage the retry behavior.\u003c/p\u003e\n"],["\u003cp\u003eThere are numerous previous versions of the documentation of this class, accessible through hyperlinks, ranging from version \u003ccode\u003e2.11.0\u003c/code\u003e to \u003ccode\u003e2.36.0\u003c/code\u003e and the latest release candidate version \u003ccode\u003e2.37.0-rc\u003c/code\u003e.\u003c/p\u003e\n"]]],[],null,[]]