Caffeine cache for Prometheus tagged counters in Spring Boot app

Counters.java

import com.github.benmanes.caffeine.cache.Caffeine;
import com.github.benmanes.caffeine.cache.LoadingCache;
import io.micrometer.core.instrument.Counter;
import io.micrometer.core.instrument.MeterRegistry;
import io.micrometer.core.instrument.Tag;
import io.micrometer.core.instrument.binder.cache.CaffeineCacheMetrics;
import java.time.Duration;
import org.springframework.stereotype.Component;

import static java.util.Arrays.asList;

@Component
public class Counters {

    private final LoadingCache<Key, Counter> counters;

    public Counters(MeterRegistry meterRegistry) {
        counters = Caffeine.newBuilder()
            .expireAfterWrite(Duration.ofMinutes(5))
            .recordStats()
            .build(key -> Counter
                .builder(key.counterName)
                .tag("account_id", String.valueOf(key.accountId))
                .tags(asList(key.additionalTags))
                .register(meterRegistry));

        CaffeineCacheMetrics.monitor(meterRegistry, counters, "counters_cache");
    }

    public void increment(Integer accountId, String counterName, Tag... additionalTags) {
        counters.get(new Key(accountId, counterName, additionalTags)).increment();
    }

    private record Key(Integer accountId, String counterName, Tag... additionalTags) {
    }
}