Locks for reads within the transaction are not acquired on read.
Instead the locks are acquired on a commit to validate that
read/queried data has not changed since the transaction started.
Pessimistic
Pessimistic lock mode.
Read locks are acquired immediately on read.
Unspecified
Default value.
If the value is not specified, the pessimistic read lock is used.
[[["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 2025-03-21 UTC."],[[["This page provides reference documentation for the `TransactionOptions.Types.ReadWrite.Types.ReadLockMode` enum within the Google Cloud Spanner v1 API for .NET."],["The `ReadLockMode` enum is used to define the locking behavior for read-write transactions in Spanner, offering options for `Optimistic`, `Pessimistic`, and `Unspecified` locking modes."],["The documentation lists various versions of the Google.Cloud.Spanner.V1 package, ranging from the latest beta (5.0.0-beta05) down to version 3.5.0, allowing users to select the version relevant to their project."],["`Optimistic` lock mode does not acquire locks on read, but instead on commit while `Pessimistic` lock mode acquires locks immediately on read."],["If unspecified, `Pessimistic` lock mode will be used by default."]]],[]]
