Titlebook: Expert SQL Server Transactions and Locking; Concurrency Internal Dmitri Korotkevitch Book 2018 Dmitri Korotkevitch 2018 Locks.Deadlocks.Con

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Theorizing Italian American Youth Culture,SQL Server, as with other modern database engines, is designed to work on servers with a large number of CPUs. It has many optimizations that help the engine to scale and efficiently work in such environments.

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https://doi.org/10.1007/978-1-4471-3175-5This chapter will discuss another SQL Server locking feature called application locks, which place locks on an application resource identified by name. Application locks allow you to serialize access to T-SQL code, similar to critical sections and mutexes in client applications.

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https://doi.org/10.1007/978-3-0348-6636-1A properly implemented transaction strategy would benefit every system. This chapter will provide a set of generic guidelines on the subject and discuss how you can improve concurrency in a system.

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https://doi.org/10.1007/978-3-030-84610-7The In-Memory OLTP technology, introduced in SQL Server 2014, can significantly improve the performance and throughput of OLTP systems. The key technology component—memory-optimized tables—stores the data in-memory, utilizing lock- and latch-free multi-versioning concurrency control.

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Columnstore indexes are a type of index that stores data on a per-column rather than per-row basis. This storage format benefits query processing in data warehousing, reporting, and analytics environments where, although queries typically read a very large number of rows, they work with just a subset of the columns from a table.

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Data Storage and Access Methods,It is impossible to grasp the SQL Server concurrency model without understanding how SQL Server stores and accesses the data. This knowledge helps you to comprehend various aspects of locking behavior in the system, and it is also essential when troubleshooting concurrency issues.

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Transaction Management and Concurrency Models,Transactions are the key concept in data management systems; they guarantee the consistency and durability of the data in the database. It is impossible to implement a database system without proper transaction management in place.

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Lock Types,This chapter will discuss the key concept in SQL Server concurrency—.. It will provide an overview of the major lock types in SQL Server, explain their compatibility, and, finally, demonstrate how different transaction isolation levels affect the lifetime of the locks in the system.

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Blocking in the System,Blocking is, perhaps, one of the most common concurrency problems encountered in the system. When blocking occurs, multiple queries block each other, which increases the execution time of queries and introduces timeouts. All of that negatively affects the user experience with the system.