记一次redis client配置使用不当造成Proxy CPU负载过高

// NewOption by self specified timeouts
// default auto load conf unless you disable it by DisableAutoLoadConf()
func NewOptionWithTimeout(
	dialTimeout,   // Dial timeout for establishing new connections.
	readTimeout,  // Timeout for socket reads. If reached, commands will fail
	writeTimeout,// Timeout for socket writes. If reached, commands will fail
	poolTimeout,// Amount of time client waits for connection if all connections are busy before returning an error
	idleTimeout,// Amount of time after which client closes idle connections.
	liveTimeout time.Duration, // Amount of time after which client closes exist connections.
	poolSize int) *Option {  // Maximum number of socket connections.
	if dialTimeout == 0 {
		dialTimeout = REDIS_DIAL_TIMEOUT
	}
	if readTimeout == 0 {
		readTimeout = REDIS_READ_TIMEOUT
	}
	if writeTimeout == 0 {
		writeTimeout = REDIS_WRITE_TIMEOUT
	}
	if poolTimeout == 0 {
		poolTimeout = REDIS_POOL_TIMEOUT
	}
	if idleTimeout == 0 {
		idleTimeout = REDIS_IDLE_TIMEOUT
	}

	if poolSize <= 0 {
		poolSize = REDIS_POOL_SIZE
	}
	opts := &redis.Options{
		DialTimeout:  dialTimeout,
		ReadTimeout:  readTimeout,
		WriteTimeout: writeTimeout,

		PoolSize:           poolSize,
		PoolTimeout:        poolTimeout,
		IdleTimeout:        idleTimeout,
		LiveTimeout:        liveTimeout,
		IdleCheckFrequency: REDIS_IDLE_CHECK_FREQUENCY,
	}
	opt := &Option{
		Options:          opts,
		PoolInitSize:     REDIS_POOL_INIT_SIZE,
		autoLoadConf:     REDIS_AUTO_LOAD_CONF,
		autoLoadInterval: REDIS_AUTO_LOAD_INTERVAL,

		maxFailureRate: MAX_FAILURE_RATE,
		minSample:      MIN_SAMPLE,
		windowTime:     WINDOW_TIME,

		configFilePath: "",
		useConsul:      true,
	}
	return opt
}