Analyze Redis memory usage. Detects high fragmentation, RSS overhead, maxmemory pressure, eviction issues, and swap risk. Provides actionable recommendations for memory optimization.

Analyze Redis SLOWLOG to find slow commands. Detects dangerous O(N) commands (KEYS, SMEMBERS, HGETALL, LRANGE, SORT, FLUSHDB, FLUSHALL), identifies latency hotspots, and recommends safer alternatives (SCAN, SSCAN, HSCAN, bounded ranges, sorted sets).

Analyze Redis client connections. Detects blocked clients, connection pool saturation, large output buffers, and pub/sub subscriber concentration. Idle connection count excludes replica (S flag) and pub/sub subscriber (P flag) connections, which are expected to be persistent — this prevents false positives when the target Redis instance has replicas or pub/sub consumers attached.

Analyze Redis keyspace distribution. Checks TTL coverage, cache hit/miss rates, database distribution balance, and expiry patterns.

Analyze Redis latency events. Detects fork latency spikes (RDB/AOF), AOF fsync delays, slow command processing, eviction/expiry cycle delays, and active defragmentation impact. Requires latency-monitor-threshold to be set.

Analyze Redis configuration for security and reliability risks. Flags: no maxmemory limit, unsafe eviction policy (noeviction with maxmemory set), network exposure (bind 0.0.0.0 without authentication), no requirepass, disabled persistence (both AOF and RDB off), idle connection timeout not set, TCP keepalive disabled, server frequency (hz) too low, and latency-monitor-threshold disabled (which silences the analyze_latency tool).

Analyze Redis replication health. For masters: reports connected replica count, per-replica state (online/wait_bgsave/send_bulk) and lag in seconds, backlog size adequacy, and partial resync offset history. For replicas: detects broken master link, high I/O lag, and full sync in progress. Works for both master and replica roles.

Comprehensive Redis health assessment. Runs all analyzers (memory, slowlog, clients, keyspace, latency, replication, config) and produces a unified report with prioritized recommendations.