Redis Tutorial

1. Redis Introduction

What Redis is, why it is so fast, connecting via redis-cli, and common use cases.

2. Data Types and Commands

Strings, hashes, lists, sets, and sorted sets with real commands, including a leaderboard example.

3. Caching Patterns

Implementing cache-aside with real Redis commands, plus the cache stampede problem and mitigations.

4. Pub/Sub and Streams

PUBLISH/SUBSCRIBE, Redis Streams as a durable alternative, and when to use Streams vs Kafka/RabbitMQ.

5. Redis Persistence

RDB snapshots vs AOF logs, the durability/performance trade-off, and how to configure each.

6. Redis Cluster and Scaling

Replication and Sentinel for high availability, Redis Cluster sharding, and when you actually need it.

7. Redis Interview Questions

Real Redis interview questions and answers covering performance, data types, and caching strategy.