Add skipFastLockRound option

Author: pluma

CHANGELOG.md

@@ -14,6 +14,14 @@ This driver uses semantic versioning:
 - A change in the major version (e.g. 1.Y.Z -> 2.0.0) indicates _breaking_
   changes that require changes in your code to upgrade.
 
+## [Unreleased]
+
+### Added
+
+- Added `skipFastLockRound` option for streaming transactions
+
+  This option was introduced in 3.12.1 and allows skipping the fast lock round.
+
 ## [9.0.0-preview.4] - 2024-06-18
 
 ### Added

src/database.ts

@@ -165,6 +165,13 @@ export type TransactionOptions = {
    * Determines the transaction size limit in bytes.
    */
   maxTransactionSize?: number;
+  /**
+   * If set to `true`, the fast lock round will be skipped, which makes each
+   * locking operation take longer but guarantees deterministic locking order
+   * and may avoid deadlocks when many concurrent transactions are queued and
+   * try to access the same collection with an exclusive lock.
+   */
+  skipFastLockRound?: boolean;
 };
 
 /**