On Types and Transactions

Transactions in Redis require a deeper understanding than just storing data. Unlike other databases, Redis is single-threaded and has tunable durability, which affects transactions. It lacks rollbacks but can fail a transaction if a key changes before it starts. Understanding the distinction between syntax errors and semantic errors in Redis is crucial for managing transactions effectively. WATCH command enables developers to observe keys for changes and ensure data consistency during transactions. The MULTI/EXEC pattern helps guard against command mismatches, type mismatches, and other potential issues that may arise during transactions.