Stay organized with collections
Save and categorize content based on your preferences.
Options for creating a new transaction.
JSON representation
{// Union field mode can be only one of the following:"readOnly": {object (ReadOnly)},"readWrite": {object (ReadWrite)}// End of list of possible types for union field mode.}
Fields
Union field mode. The mode of the transaction. mode can be only one of the following:
The transaction can be used for both read and write operations.
ReadOnly
Options for a transaction that can only be used to read documents.
JSON representation
{// Union field consistency_selector can be only one of the following:"readTime": string// End of list of possible types for union field consistency_selector.}
Fields
Union field consistency_selector. The consistency mode for this transaction. If not set, defaults to strong consistency. consistency_selector can be only one of the following:
This must be a microsecond precision timestamp within the past one hour, or if Point-in-Time Recovery is enabled, can additionally be a whole minute timestamp within the past 7 days.
Uses RFC 3339, where generated output will always be Z-normalized and use 0, 3, 6 or 9 fractional digits. Offsets other than "Z" are also accepted. Examples: "2014-10-02T15:01:23Z", "2014-10-02T15:01:23.045123456Z" or "2014-10-02T15:01:23+05:30".
ReadWrite
Options for a transaction that can be used to read and write documents.
Firestore does not allow 3rd party auth requests to create read-write. transactions.
[[["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 2025-08-26 UTC."],[[["\u003cp\u003eTransactions can be initiated in two modes: \u003ccode\u003ereadOnly\u003c/code\u003e for read operations and \u003ccode\u003ereadWrite\u003c/code\u003e for both read and write operations.\u003c/p\u003e\n"],["\u003cp\u003e\u003ccode\u003eReadOnly\u003c/code\u003e transactions can specify a \u003ccode\u003ereadTime\u003c/code\u003e for consistency, allowing reading documents at a specific past time within the last hour or, if enabled, within the last 7 days, with options for precision.\u003c/p\u003e\n"],["\u003cp\u003e\u003ccode\u003eReadWrite\u003c/code\u003e transactions allow both reading and writing, and they support the \u003ccode\u003eretryTransaction\u003c/code\u003e field, which is a base64-encoded string.\u003c/p\u003e\n"],["\u003cp\u003eFirestore restricts third-party authorization requests from creating \u003ccode\u003ereadWrite\u003c/code\u003e transactions.\u003c/p\u003e\n"]]],[],null,["# TransactionOptions\n\nOptions for creating a new transaction.\n\nReadOnly\n--------\n\nOptions for a transaction that can only be used to read documents.\n\nReadWrite\n---------\n\nOptions for a transaction that can be used to read and write documents.\n\nFirestore does not allow 3rd party auth requests to create read-write. transactions."]]
