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Database / REDIS

What is a Redis key?

A key is the unique string identifier used to store and retrieve a value in Redis — every piece of data in Redis, regardless of its type (string, hash, list, set, and so on), is addressed by exactly one key, the same way a variable name addresses a value in a program.

SET user:1001:name "Alex"
GET user:1001:name

Keys are binary-safe strings, so they can technically contain any bytes, but in practice teams adopt a consistent naming convention — commonly colon-separated segments like user:1001:name — to keep related keys organized and scannable. Redis has no built-in concept of "folders" or namespaces beyond this naming convention, so key design is entirely up to the application, and a poorly thought-out key scheme is a common source of operational pain as a dataset grows.

What identifies a value stored in Redis?
Does Redis enforce a folder or namespace structure for keys?

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