Expert SQL Server Transactions and Locking

1. Front Matter

   Pages i-xix

   PDF

2. Data Storage and Access Methods

   • Dmitri Korotkevitch

   Pages 1-24

3. Transaction Management and Concurrency Models

   • Dmitri Korotkevitch

   Pages 25-46

4. Lock Types

   • Dmitri Korotkevitch

   Pages 47-72

5. Blocking in the System

   • Dmitri Korotkevitch

   Pages 73-107

6. Deadlocks

   • Dmitri Korotkevitch

   Pages 109-136

7. Optimistic Isolation Levels

   • Dmitri Korotkevitch

   Pages 137-157

8. Lock Escalation

   • Dmitri Korotkevitch

   Pages 159-173

9. Schema and Low-Priority Locks

   • Dmitri Korotkevitch

   Pages 175-189

10. Lock Partitioning

    • Dmitri Korotkevitch

    Pages 191-201

11. Application Locks

    • Dmitri Korotkevitch

    Pages 203-211

12. Designing Transaction Strategies

    • Dmitri Korotkevitch

    Pages 213-223

13. Troubleshooting Concurrency Issues

    • Dmitri Korotkevitch

    Pages 225-267

14. In-Memory OLTP Concurrency Model

    • Dmitri Korotkevitch

    Pages 269-294

15. Locking in Columnstore Indexes

    • Dmitri Korotkevitch

    Pages 295-311

16. Back Matter

    Pages 313-320

    PDF

Master SQL Server’s Concurrency Model so you can implement high-throughput systems that deliver transactional consistency to your application customers. This book explains how to troubleshoot and address blocking problems and deadlocks, and write code and design database schemas to minimize concurrency issues in the systems you develop.


SQL Server’s Concurrency Model is one of the least understood parts of the SQL Server Database Engine. Almost every SQL Server system experiences hard-to-explain concurrency and blocking issues, and it can be extremely confusing to solve those issues without a base of knowledge in the internals of the Engine. While confusing from the outside, the SQL Server Concurrency Model is based on several well-defined principles that are covered in this book.


Understanding the internals surrounding SQL Server’s Concurrency Model helps you build high-throughput systems in multi-user environments. This book guides you through the Concurrency Model and elaborates how SQL Server supports transactional consistency in the databases. The book covers all versions of SQL Server, including Microsoft Azure SQL Database, and it includes coverage of new technologies such as In-Memory OLTP and Columnstore Indexes.




What You'll Learn

• Know how transaction isolation levels affect locking behavior and concurrency
  
• Troubleshoot and address blocking issues and deadlocks
  
• Provide required data consistency while minimizing concurrency issues
  
• Design efficient transaction strategies that lead to scalable code
  
• Reduce concurrency problems through good schema design
  
• Understand concurrency models for In-Memory OLTP and Columnstore Indexes
  
• Reduce blocking during index maintenance, batch data load, and similar tasks
  

Who This Book Is For


SQL Server developers, database administrators, and application architects who are developing highly-concurrent applications. The book is for anyone interested in the technical aspects of creating and troubleshooting high-throughput systems that respond swiftly to user requests.

• Locks
• Deadlocks
• Concurrency
• Transaction Isolation
• Isolation Levels
• Atomicity
• Blocking
• Lock Escalation
• Columnstore Indexes
• In-memory OLTP
• Troubleshooting
• Performance
• Optimistic Concurrency
• Pessimistic Concurrency
• Lock Partitioning
• Transaction Stratagies

• Land O Lakes, USA

  Dmitri Korotkevitch

Dmitri Korotkevitch is a Microsoft Data Platform MVP and Microsoft Certified Master (SQL Server 2008) with many years of IT experience, including years of experience working with Microsoft SQL Server as Application and Database Developer, Database Administrator, and Database Architect. He specializes in the design, development, and performance tuning of complex OLTP systems that handle thousands of transactions per second around the clock. Currently, he works as Director of Database Services at Chewy.com and he provides SQL Server consulting services and training to clients around the world. Dmitri regularly speaks at various Microsoft and SQL PASS events.

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