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You're reading from  jOOQ Masterclass

Product typeBook
Published inAug 2022
Reading LevelBeginner
PublisherPackt
ISBN-139781800566897
Edition1st Edition
Languages
SQL
Tools
Spring
Concepts
Database Programming
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Author (1)
Anghel Leonard
Anghel Leonard
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Anghel Leonard

Anghel Leonard is a Chief Technology Strategist and independent consultant with 20+ years of experience in the Java ecosystem. In daily work, he is focused on architecting and developing Java distributed applications that empower robust architectures, clean code, and high-performance. Also passionate about coaching, mentoring and technical leadership. He is the author of several books, videos and dozens of articles related to Java technologies.
Read more about Anghel Leonard

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Locking

Locking is used to orchestrate concurrent access to data to prevent race condition threads, deadlocks, lost updates, and other SQL phenomena.

Among the most popular locking mechanisms, we have optimistic and pessimistic locking. As you'll see shortly, jOOQ supports both of them for CRUD operations. So, let's start with optimistic locking.

Optimistic locking overview

Optimistic locking is commonly related to the lost updates SQL phenomena, so let's quickly overview this anomaly.

A lost update is a popular anomaly that can seriously affect data integrity. A transaction reads a record and uses this information to make business decisions (for instance, decisions that may lead to that record being modified) without being aware that, in the meantime, a concurrent transaction has modified that record and committed it. When the first transaction commits, it is unaware of the lost update. This may cause data integrity issues (for example, the inventory can...

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jOOQ Masterclass
Published in: Aug 2022Publisher: PacktISBN-13: 9781800566897
© 2022 Packt Publishing Limited All Rights Reserved

Author (1)

author image
Anghel Leonard

Anghel Leonard is a Chief Technology Strategist and independent consultant with 20+ years of experience in the Java ecosystem. In daily work, he is focused on architecting and developing Java distributed applications that empower robust architectures, clean code, and high-performance. Also passionate about coaching, mentoring and technical leadership. He is the author of several books, videos and dozens of articles related to Java technologies.
Read more about Anghel Leonard

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