Pub/Sub Messaging
Last updated
What is Pub/Sub Messaging?
Pub/Sub messaging in Redis is a messaging pattern that allows clients to communicate with each other through channels without needing direct connections. In this model, clients can subscribe to one or more channels to receive messages and can publish messages to these channels. When a message is published, all subscribed clients receive it in real-time, making it ideal for applications requiring instant notifications, such as chat systems, live updates, or event broadcasting. Redis's implementation of Pub/Sub is simple and efficient, supporting commands like PUBLISH, SUBSCRIBE, and UNSUBSCRIBE, although it does not provide message persistence or acknowledgment, which means that messages are not stored for clients that are not actively subscribed at the time of publishing.
Free resources to learn Pub/Sub Messaging
- Official docsRedis Pub/Sub
- Official docsPUBLISH Command
- Official docsSUBSCRIBE Command
- Official docsUNSUBSCRIBE Command
More in stage 2: Strings
- Strings
- Redis vs SQL/NoSQL DBs
- When to choose Redis?
- Caching
- Real-time Analytics
- Session Management
- Leaderboards and Counters
- Starting the Server
- Connecting using Redis CLI
- Basic Commands / SET, GET
- Using Package Managers
- Pre-compiled Binaries
- Using Docker
- Data Persistence Options
- Rich Data Structures
- High Performance and Scalability
- Setting and Getting Keys
- DEL
- expire
- TTL
- Overview of Data Types
- HSET
- HGET
- HGETALL
- HDEL
- HEXISTS
- More Commands
- SET
- GET
- INCR
- DECR
- APPEND
- STRLEN
- More Commands
Pub/Sub Messaging: common questions
Can I learn Pub/Sub Messaging in Hindi?
This lesson is written in English. Once you sign in, open it in the interactive course and ask the AI tutor to explain Pub/Sub Messaging in Hindi or Hinglish. The tutor answers from this lesson’s own text, so it stays on the syllabus, and it runs on your own Google, OpenAI or Anthropic key.
Is this Pub/Sub Messaging tutorial for beginners?
It is lesson 12 of 162 in the free Redis roadmap, in stage 2, Strings. If you are new to Redis, start from stage 1 and come back here in order; if you already know the earlier stages, this lesson stands on its own.