Redis: Not Just a Cache

Everyone knows Redis for caching. But it is much more.

Data Structures

Redis is a “data structure server”.

• Strings: Caching simple values.
• Lists: Implementing Queues (Job processing).
• Sets: Unique items (e.g., active users).
• Sorted Sets: Leaderboards.
• Hashes: Storing objects efficiently.

Pub/Sub

Redis is a super fast message broker. Service A publishes to a channel, Service B listens. Great for real-time chat.

Conclusion

Redis is the Swiss Army knife of performance. If you need speed, put it in Redis.