12 lines
554 B
Markdown
12 lines
554 B
Markdown
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trigger: always_on
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---
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# Redis Rules
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- **Format:** `{app}:{layer}:{entity}:{action}:{id}` (e.g., `app:cache:user:123`)
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- **Rules:** All lowercase, separated by colons `:`, max 50 chars.
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- **Mandatory TTL:** Every key MUST have an expiration time to avoid memory leaks.
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- **Commands:** Use `SCAN`, `HSCAN`, `SSCAN`. NEVER use `KEYS *` (blocks server).
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- **Structures:** Use `Hash` for objects, `String` for simple values/JSON, `Set`/`List` for collections.
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- **Invalidation:** Use tags (e.g., `app:tags:user`) to group and delete related cache keys.
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