Understanding Optimized Locking in SQL Server 2025
Explore optimized locking in SQL Server 2025 to enhance concurrency and improve performance in your database applications.
Locking
Row Versioning in SQL Server
Row versioning fundamentally changes how SQL Server handles read operations during write transactions. Instead of blocking, SQL Server can serve a previous version of the row. We enable row versioning in SQL Server by turning on READ_COMMITTED_SNAPSHOT ISOLATION (RCSI). In this post we will demonstrate blocking without row versioning and…
Concurrency: Phantom Reads
A closer look at the Serializable Transaction Isolation Level and how it could prevent Phantom Reads concurrency issues in SQL Server.
Concurrency: Inconsistent Analysis
A closer look at the Repeatable Read Transaction Isolation Level and how it could help with Inconsistent Analysis concurrency issues in SQL Server.
Concurrency: Lost Updates
A closer look at the Read Committed Transaction Isolation Level and how it could allow Lost Update concurrency issues in SQL Server.
Concurrency: Dirty Reads
A closer look at the Read Uncommitted Transaction Isolation Level and how it could allow Dirty Reads in SQL Server.
What are Locks?
Explore SQL Server locks for transaction isolation to prevent data inconsistencies and ensure smooth database operations.
Transaction Isolation Levels
Transaction Isolation Levels are used to control data access concurrency. Concurrency controls can be Pessimistic or Optimistic.
What are Transactions?
Understand Transactions in SQL Server and their role in maintaining data integrity and enforcing the ACID properties.