skills/redis-development/rules/observe-metrics.md

title	impact	impactDescription	tags	description	alwaysApply
Monitor Key Redis Metrics	MEDIUM	Early detection of performance and capacity issues	observability, metrics, monitoring, memory, connections	Monitor Key Redis Metrics	true

Monitor Key Redis Metrics

Track these metrics to catch issues before they impact users.

Metric	What It Tells You	Alert When
used_memory	Current memory usage	> 80% of maxmemory
connected_clients	Number of connections	Sudden spikes or drops
blocked_clients	Clients waiting on blocking ops	> 0 sustained
instantaneous_ops_per_sec	Current throughput	Significant drops
keyspace_hits/misses	Cache hit ratio	Hit ratio < 80%
rejected_connections	Connection limit issues	> 0
rdb_last_save_time	Last persistence snapshot	Too old

Correct: Export metrics to your monitoring system.

# Get key metrics
info = redis.info()
print(f"Memory: {info['used_memory_human']}")
print(f"Connections: {info['connected_clients']}")
print(f"Ops/sec: {info['instantaneous_ops_per_sec']}")
print(f"Hit ratio: {info['keyspace_hits'] / (info['keyspace_hits'] + info['keyspace_misses']) * 100:.1f}%")

Redis Insight: Use Redis Insight for visual monitoring, query profiling, and debugging. It includes Redis Copilot for natural language queries.

Reference: Redis Insight