Statistics

Cache<Key, Graph> graphs = Caffeine.newBuilder()
    .maximumSize(10_000)
    .recordStats()
    .build();

By using Caffeine.recordStats(), you can turn on statistics collection. The Cache.stats() method returns a CacheStats which provides statistics such as

• hitRate(): returns the ratio of hits to requests
• averageLoadPenalty(): the average time spent loading new values, in nanoseconds
• evictionCount(): the number of cache evictions

These statistics are critical in cache tuning and we advise keeping an eye on these statistics in performance-critical applications.