Read-only transactions provide guaranteed consistency across several reads,
but do not allow writes. Read-only transactions can be configured to read at
timestamps in the past. Read-only transactions do not need to be committed and
do not take locks.
ReadWrite
Locking read-write transactions are the only transaction type that support writing
data into Cloud Spanner. These transactions rely on pessimistic locking and, if
necessary, two-phase commit. Locking read-write transactions may abort, requiring
the application to retry.
[[["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complicated / too many steps","tooComplicatedTooManySteps","thumb-down"],["Out of date","outOfDate","thumb-down"],["Samples / code issue","samplesCodeIssue","thumb-down"],["Other","otherDown","thumb-down"]],["Last updated 2025-08-07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 webpage details the \u003ccode\u003eTransactionMode\u003c/code\u003e enum within the \u003ccode\u003eGoogle.Cloud.Spanner.Data\u003c/code\u003e library, specifically referencing version 3.9.0 and listing versions up to the latest beta release.\u003c/p\u003e\n"],["\u003cp\u003eThe \u003ccode\u003eTransactionMode\u003c/code\u003e enum defines the operational mode for transactions within Cloud Spanner, encompassing both \u003ccode\u003eReadOnly\u003c/code\u003e and \u003ccode\u003eReadWrite\u003c/code\u003e options.\u003c/p\u003e\n"],["\u003cp\u003e\u003ccode\u003eReadOnly\u003c/code\u003e transactions offer consistency across multiple reads without allowing writes and are free from locks or commit processes.\u003c/p\u003e\n"],["\u003cp\u003e\u003ccode\u003eReadWrite\u003c/code\u003e transactions, which are necessary for writing data to Cloud Spanner, use pessimistic locking and may require retry logic due to potential aborts.\u003c/p\u003e\n"],["\u003cp\u003eThe page provides a comprehensive version history of \u003ccode\u003eGoogle.Cloud.Spanner.Data\u003c/code\u003e, including links to access documentation for each version, starting from 3.5.0 all the way to the latest beta release (5.0.0-beta05).\u003c/p\u003e\n"]]],[],null,[]]
