DECR
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What is DECR?
The DECR command in Redis decreases the integer value of a key by 1. If the key does not exist, it is initialized to 0 before performing the decrement. If the key contains a value that is not an integer, Redis returns an error. This command is useful in counters and for tracking state changes in a simple, atomic way.
Free resources to learn DECR
- Official docsDECR Documentation
- ArticleRedis String DECR
More in stage 2: Strings
- Strings
- Redis vs SQL/NoSQL DBs
- When to choose Redis?
- Caching
- Real-time Analytics
- Session Management
- Pub/Sub Messaging
- 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
- APPEND
- STRLEN
- More Commands
DECR: common questions
Can I learn DECR 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 DECR 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 DECR tutorial for beginners?
It is lesson 37 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.