Mastering PostgreSQL Concurrency Control: Why Pessimistic Locking and `SELECT FOR UPDATE` Are Non-Negotiable for Financial Systems
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Concurrency control in high-throughput financial architectures represents one of the most critical engineering challenges in modern distributed systems. When thousands of concurrent user requests attempt to modify account balances, execute ledger entries, or transfer funds simultaneously, the under…
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- 2026-10-15 20:00 · DEV Community — AI
Mastering PostgreSQL Concurrency Control: Why Pessimistic Locking and `SELECT FOR UPDATE` Are Non-Negotiable for Financial Systems