[Programming code and related configurations] CircularBuffer<LogMessage> logBuffer = new CircularBuffer<>(BUFFER_SIZE); ExecutorService threadPool = Executors.newFixedThreadPool(poolSize); Map<String, Object> map = new ConcurrentHashMap<>(); -Xmx1024m -XX:+UseG1GC -XX:MaxGCPauseMillis=200 threadPoolSize=10 networkBufferSize=8192 dbConnectionPoolSize=20