Cheatsheet

Cheatsheet - CLI

CLI - Verify connection to Redis server

redis-cli -h $host -p $port ping

Use cases

Query Cache

• How to use Redis for Query Caching (opens in a new tab)

API Gateway Cache for user sessions

• How to use Redis for API Gateway Caching (opens in a new tab)

Pub/Sub

Redis Pub/Sub (Publish/Subscribe) is a messaging pattern where clients can subscribe to channels, and other clients can publish messages to these channels. Clients that are subscribed to a channel receive all the messages published to that channel. This messaging pattern is useful for broadcasting messages to multiple clients.

Good for real-time notifications, chat apps, or any use case where speed and simplicity are key.

Think of it like: A group chat where everyone hears what’s said, but once it’s said, it’s gone forever.

• Redis Pub/Sub | Redis (opens in a new tab)

Redis Streams

• Good for event sourcing, message queuing, and real-time data processing, similar to Apache Kafka

• A data structure that acts like an append-only log.

• The main advantages of Redis Streams are the highly efficient consumer groups, allowing groups of consumers to uniquely consume from different parts of the same stream of messages, and the blocking operations that allow a consumer to wait until a new data is added to the stream.

• Resources

  • Microservices Communication with Redis Streams (opens in a new tab)
  • You’re Probably Thinking About Redis Streams Wrong (opens in a new tab)
  • Harness - Event-Driven Architecture Using Redis Streams (opens in a new tab)
  • What to Choose for Your Synchronous and Asynchronous Communication Needs—Redis Streams, Redis Pub/Sub, Kafka, etc. (opens in a new tab)
  • Redis Streams vs Apache Kafka (opens in a new tab)

Cache-aside (Lazy-loading)

• Improves read performance

Write-Behind (Write-Back)

• Improves write performance

• Resources

  • Maximizing Azure SQL Database performance with a globally distributed Redis write-behind cache - Azure SQL Devs’ Corner (opens in a new tab)

Write-Through

Read-Replica

Resources

• Redis Command Cheat Sheet (opens in a new tab)

• Redis Developer Hub (opens in a new tab)

  Lots of tutorials and examples for various use cases

Managing Redis

Persistence

• Redis persistence (opens in a new tab)

  Different persistence strategies and performance implications

• Redis Persistence Dive Deep - Trade-offs Between Performance And Durability (opens in a new tab)

  Understanding AOF and RDB strategies, their trade-offs and applications

Spring Data Redis

Clients

• Lettuce (opens in a new tab) is generally recommended.

  • Officially supported
  • Free for commercial use
  • Decent performance

• Redisson

  • Many features missing only available to Pro version
  • High performance

• Jedis

  • Easy to use
  • Blocking I/O

• Jedis vs. Lettuce: An Exploration (opens in a new tab)

Admin

Redis Insight

Redis Insight - Docker

• Installation (opens in a new tab)