Example PromQL Queries for Apinizer Cache
Cache Analyses
Metrics used to monitor cache usage and efficiency. Performance is evaluated with data such as cache searches, additions, and memory consumption.
1. Total Cache Search Count (for 1 hour)
sum(increase(cache_gets_total[1h]))
2. Cache Addition Count (for 10 minutes)
sum(increase(cache_puts_total[10m]))
3. Cache Hit Rate (%) (for 5 minutes)
(sum(increase(cache_gets_total[5m])) - sum(increase(apinizer_cache_api_errors_total[5m]))) / sum(increase(cache_gets_total[5m])) * 100
4. Current Number of Entries in Cache
sum(cache_size)
5. Cache Features with Highest Memory Usage
topk(5, sum by (cache) (cache_entry_memory_bytes))
Cache API Analyses
Used to monitor the performance of Cache API requests. The system's ability to respond is analyzed with data such as API request count and success rate.
1. Total API Request Count (for 1 hour)
sum(increase(apinizer_cache_api_requests_total[1h]))
2. API Success Rate (%) (for 10 minutes)
(sum(increase(apinizer_cache_api_requests_total[10m])) - sum(increase(apinizer_cache_api_errors_total[10m]))) / sum(increase(apinizer_cache_api_requests_total[10m])) * 100
JVM Analyses
Application's resource consumption and performance are evaluated by monitoring JVM's memory usage, GC (Garbage Collector) pause durations, and thread count.
1. Memory Usage Percentage
(sum(jvm_memory_used_bytes{application="apinizer-cache"}) * 100) / sum(jvm_memory_max_bytes{application="apinizer-cache"})
2. Garbage Collection Duration (for 5 minutes)
sum(rate(jvm_gc_pause_seconds_sum{application="apinizer-cache"}[5m]))
3. Current Number of Live Threads
sum(jvm_threads_live_threads{application="apinizer-cache"})
System Analyses
General resource usage and performance are monitored with data such as system's CPU usage, process duration, and number of open file descriptors.
1. CPU Usage of Pods
sum(rate(container_cpu_usage_seconds_total{namespace="apinizer"}[5m])) by (pod) * 100
2. JVM Process Duration (seconds)
sum(process_uptime_seconds)
3. Number of Open File Descriptors
sum(process_files_open_files{application="apinizer-cache"})