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Example PromQL Queries for Apinizer Cache

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Cache Analyses

Metrics used to monitor cache usage and efficiency. Performance is evaluated with data such as cache lookups, additions, and memory consumption.

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1. Total Cache Lookup Count (for 1 hour)

sum(increase(cache_gets_total[1h]))

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2. Cache Addition Count (for 10 minutes)

sum(increase(cache_puts_total[10m]))

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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

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4. Current Number of Entries in Cache

sum(cache_size)

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5. Cache Features with Highest Memory Usage

topk(5, sum by (cache) (cache_entry_memory_bytes))

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Cache API Analyses

Used to monitor Cache API request performance. The system’s ability to respond is analyzed with data such as API request count and success rate.

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1. Total API Request Count (for 1 hour)

sum(increase(apinizer_cache_api_requests_total[1h]))

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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

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JVM Analyses

Evaluates application resource consumption and performance by monitoring JVM memory usage, GC (Garbage Collector) pause times, and thread count.

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1. Memory Usage Percentage

(sum(jvm_memory_used_bytes{application="apinizer-cache"}) * 100) / sum(jvm_memory_max_bytes{application="apinizer-cache"})

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2. Garbage Collection Duration (for 5 minutes)

sum(rate(jvm_gc_pause_seconds_sum{application="apinizer-cache"}[5m]))

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3. Current Number of Live Threads

sum(jvm_threads_live_threads{application="apinizer-cache"})

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System Analyses

Monitors overall resource usage and performance with data such as system CPU usage, process duration, and open file descriptor counts.

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1. Pod CPU Usage

sum(rate(container_cpu_usage_seconds_total{namespace="apinizer"}[5m])) by (pod) * 100

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2. JVM Process Duration (seconds)

sum(process_uptime_seconds)

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3. Open File Descriptor Count

sum(process_files_open_files{application="apinizer-cache"})