log.info("Set maximum idle time to {} ms", millis);
    }

    /**
     * Set the health check interval
     * @param millis the health check interval in milliseconds
     */
    public void setHealthCheckInterval(int millis) {
        if (millis <= 0) {
            throw new IllegalArgumentException("Health check interval must be positive");
        }
        this.healthCheckInterval = millis;