# Analyze Memory State

> Analyze Redis memory usage: identify the biggest keys, largest data structures, key counts per type, and candidates for eviction or expiry. Use when Redis memory is high, evictions are occurring, or when optimizing storage.

- Skill: `hiai-gg/analyze-memory-state` (Agent Skill)
- Install (CLI): `npx skillmds@latest add hiai-gg/analyze-memory-state`
- Raw SKILL.md: https://api.skillmd.com/api/skills/hiai-gg/analyze-memory-state/raw
- Safety review: pending
- Works with: Claude Code, Claude.ai, OpenAI Codex
- Category: Coding & Dev Tools
- Author: HiAi-gg (https://skillmd.com/u/hiai-gg)
- Updated: 2026-09-17
- Page: https://skillmd.com/skills/hiai-gg/analyze-memory-state

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# Analyze Redis Memory

Use this skill when Redis memory usage matters: high memory, evictions, or
storage optimization.

## Workflow

### 1. Get the overview

- `info` — read `used_memory`, `maxmemory`, `evicted_keys`, `expired_keys`.
- `dbsize` — total key count.
- Note whether eviction is actively happening (`evicted_keys` growing).

### 2. Profile by type

- Use the server's scan + type tooling to count keys per type (string, hash,
  list, set, zset, stream). A single type dominating usually points at the
  culprit pattern.

### 3. Find the biggest consumers

- Strings: sample long values (`strlen` via `get` when feasible) on the largest
  keys.
- Hashes/lists/sets/zsets: estimate by element count (`hlen`, `llen`, `scard`,
  `zcard`) — element count × element size is the practical proxy; flag keys
  with extreme counts.
- Streams: `xlen` for very long streams with no trimming.

### 4. Identify candidates

Rank by estimated bytes:

1. huge values (large blobs, caches of large payloads),
2. unbounded collections (lists/streams that never trim),
3. keys with no TTL that should expire (session/cache keys without expiry).

### 5. Report

Give: memory overview (used/max/evictions), the top N keys by estimated size
with their types and element counts, and concrete recommendations (add TTL, trim
streams, move blobs out of Redis). **Do not delete, expire, or evict anything**
— those are write actions requiring explicit user intent.