Overcoming Concurrency Issues in Web Applications
summary
Covers common concurrency problems in web applications and practical approaches to identify and prevent them, including using optimistic patterns (“ask for forgiveness, not permission”), explaining the TOCTOU (time-of-check to time-of-use) issue and mitigation strategies, using and avoiding database locking, and when to rely on database features for correctness. Technologies and context are web apps and databases; examples focus on developer-facing techniques rather than infrastructure specifics.
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