Retrieval by Pattern
Last updated
What is Retrieval by Pattern?
The SCAN command in Redis is a cursor-based iterator that does not guarantee to return all matching keys in one call, even if COUNT is specified. Instead, SCAN returns a small subset of keys that match the pattern, requiring subsequent calls to complete the iteration. Redis offers powerful pattern-based key retrieval, allowing users to query multiple keys using wildcard patterns. This functionality primarily relies on the KEYS command, which supports glob-style patterns such as *, ?, and [] for flexible matching.
Free resources to learn Retrieval by Pattern
- Official docsSCAN
More in stage 7: Atomicity in Redis
Retrieval by Pattern: common questions
Can I learn Retrieval by Pattern 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 Retrieval by Pattern 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 Retrieval by Pattern tutorial for beginners?
It is lesson 78 of 162 in the free Redis roadmap, in stage 7, Atomicity in Redis. 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.