Next Steps with Redis

You can now

• Install and ping Redis
• Use redis-cli safely
• Work with strings, lists, hashes, and sets
• Set TTLs for caches and sessions
• Sketch app clients in Node or Python

Watch for these traps

• No TTLs on cache keys
• KEYS * in production
• Storing huge blobs that belong in object storage
• One shared Redis without key prefixes across apps

Where to go next

• Sorted sets and leaderboards
• Pub/Sub and Streams
• Distributed locks (carefully)
• Cluster and Sentinel concepts
• Observability: memory, hit rate, slow commands

Practice idea

Add a cache layer in front of a slow API or database query in a small project, measure the speedup, and invalidate on updates.