reliability

As we konw，if we set paramItem in GatewayFlowRule，it will used as ParamFlowRule。
but ，in ParamFlowRule，we can set multiple paramItem by paramFlowItemList

How to use multiple paramItem in GatewayFlowRule。

使用网关流控时，如果要使用参数限流配置，没法和热点参数限流一样，添加多个热点参数项。
比如，在网关里面配置route_id=A，按host=a.com限流100qps，host=b.com限流50qps

Currently this will work:

"method": [
        {
            "name": "send-invalid-request",
            "type": "action",
            "provider": {
                "type": "process",
                "path": "echo",
                "arguments": "${request_file}"
            }
        }
    ]

But this won't:

"method": [
        {
            "name": "send-invalid-

Implement Message.InspectMsg and suitable overrides. This function should be invoked when a message is sent, but only when a debug flag is enabled in a lab load. Its purpose is to verify that the message

• belongs to a valid protocol
• matches its PSM's protocol (if sent by a PSM)
• has a valid signal for its protocol
• contains all parameters that are mandatory for its signal
• contains

Although it's not a high priority, we could get a more fancy and modern wheel.

Is your feature request related to a problem? Please describe.

The default window durations in the slo init use a humain friendly format:

But when choosing custom, you have to enter the duration as a ISO format. This is a tad confusing and not as nice an experience as expect