Atomic Operations and Transactions
Use Lua scripts to perform multi-step atomic Redis operations.
Why Atomic Multi-Step Operations?
Many Redis use cases require reading and writing multiple keys in a single consistent operation. Without atomicity, race conditions corrupt state.
The Read-Modify-Write Race Condition
Without Lua: GET counter → modify in client → SET counter. Two clients can both read the same value, both modify, and the second SET overwrites the first's changes.
All lessons in this course
- EVAL and Redis Lua Environment
- Atomic Operations and Transactions
- Rate Limiting with Lua
- SCRIPT LOAD and EVALSHA