In this case, you tell the filter code to pay attention to the parameter count, and it should be 0.
在这种情况下,您告诉过滤器代码要注意参数的数量,并且它应当为0。
2
If you call the above code repeatedly, this count may reach the backout threshold configured on the destination, at which point the messages will be re-queued and no longer available for receipt.