RedisMetricredis.keys.evicted
Total number of evicted keys due to maxmemory limit
Summary
Cumulative counter of keys evicted from memory due to maxmemory limit enforcement with an eviction policy (e.g., allkeys-lru, volatile-lru). Non-zero or increasing values indicate memory pressure — Redis is removing keys to make space for new data. High eviction rates degrade cache hit ratios and application performance as frequently accessed data gets evicted. This metric is critical for right-sizing Redis memory allocation and tuning eviction policies.
Interface Metrics (4)
Related Insights (2)
High Redis memory fragmentation ratio (>1.5) causes actual memory usage to exceed redis.memory.maxmemory limits, triggering premature key evictions and reducing cache hit rates even when logical memory usage appears healthy.
When redis.keys.evicted rate increases significantly, Redis is evicting keys to stay within maxmemory limits, potentially causing cache miss storms and degraded application performance as hot data is prematurely evicted.