Currently we don't have any mechanism to limit the maximum number of clients that could be handled simultaneously.

This feature should be designed properly. Here is some clue: https://redis.io/topics/clients#maximum-number-of-clients

It's useful model for extend the expiration automatically sometime.
I haven't found related infomation about this feature.
Would you consider to support this feature?

使用kubectl edit或者kubctl replace修改alluxioruntimes的yaml后，controller不会watch此事件并重新创建pod。
建议新增动态修改的机制。