1. Use redis-cli INFO to inspect real-time memory usage, connected clients, hit rate, and replication status. 2. Watch the keyspace hit ratio; below 80% suggests cache design or sizing issues. 3. Track eviction rate and evicted_keys to identify memory pressure before OOM events occur. 4. Set up Prometheus Redis Exporter with Grafana dashboards for long-term monitoring. 5. Use SLOWLOG to alert on latency spikes and identify expensive commands before they affect application performance.
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