January 2019
Beginner
556 pages
14h 19m
English
Content preview from Learning PostgreSQL 11 - Third Edition
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Transaction and concurrency
Concurrency can be defined as the interleaving of actions in time to give the appearance of simultaneous execution. Concurrency tries to solve several issues, including sharing global resources safely, and handling errors in multiple execution contexts.
Concurrency is pervasive in computing, occurring everywhere from low-level hardware design to worldwide access of shared data. Examples of concurrency handling can be found in instruction pipe lining in CPU micro-architecture and threading in operating system design. Even in our daily lives, we can encounter concurrency when using tools such as Git. A common scenario is when several developers are sharing the same code base, introducing conflicts, and finally resolving ...
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