redis-operations

# Skill: Redis Operations > **Expertise:** Redis memory management, eviction, persistence (RDB+AOF), Redis Sentinel, Redis Cluster, K8s Redis (Bitnami/Spotahome operator). ## When to load When investigating Redis memory pressure, configuring persistence, debugging eviction, or setting up Redis HA. ## Health Check Commands ```bash # Connect to Redis redis-cli -h redis-master -p 6379 -a $REDIS_PASSWORD # Server info overview redis-cli INFO server | grep -E "redis_version|uptime|tcp_port" redis-cli INFO memory | grep -E "used_memory_human|used_memory_peak_human|mem_fragmentation_ratio|maxmemory" redis-cli INFO stats | grep -E "total_commands_processed|rejected_connections|evicted_keys" redis-cli INFO keyspace # databases with key counts + expires # Real-time monitoring (ops/sec per command) redis-cli --stat # 1-second interval stats redis-cli MONITOR # log every command (NEVER in production for long — high overhead) # Slow log (commands over threshold) redis-cli CONFIG SET slowlog-log-slower-than 10000 # 10ms threshold redis-cli SLOWLOG GET 20 # last 20 slow commands redis-cli SLOWLOG LEN redis-cli SLOWLOG RESET ``` ## Memory Management ```bash # Check memory usage breakdown redis-cli MEMORY DOCTOR # health analysis + recommendations redis-cli MEMORY STATS # detailed breakdown redis-cli MEMORY USAGE <key> # bytes used by a specific key # Find big keys (scan, not KEYS — non-blocking) redis-cli --bigkeys # sample-based...