HDEL
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What is HDEL?
HDEL is a Redis command used to delete one or more specified fields from a hash. If the fields exist in the hash, they are removed, and the command returns the number of fields that were deleted. If a specified field does not exist, it is ignored. HDEL is useful for efficiently managing memory and cleaning up data within a Redis hash without removing the entire hash structure.
Free resources to learn HDEL
- Official docsHDEL
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
- HEXISTS
- More Commands
- SET
- GET
- INCR
- DECR
- APPEND
- STRLEN
- More Commands
HDEL: common questions
Can I learn HDEL 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 HDEL 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 HDEL tutorial for beginners?
It is lesson 31 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.