Db

This post is part of the series Postgres for Everything. Nowadays, we typically develop stateless applications, making it easier to scale them horizontally. However, locking is an essential tool to prevent race conditions in software development. In applications with multiple instances, programming language-level locks are insufficient because they only work locally within an instance. A centralized locking mechanism, valid across all instances, is required. Redis SETNX You can use SETNX to implement a simple lock. SETNX sets a value for a key only if the key does not already exist. ...