A service sink is a type of data sink that can be used to record service-specific events in a production environment. They are useful for debugging, monitoring, and troubleshooting purposes.
USES OF SERVICE SINK
A service sink should be placed after the input processor and before the output processor in an event processing pipeline. A service sink should be used for, -debugging and troubleshooting purposes -recording event specific information in production environments. -can be placed as the last point of an event processing pipeline after input processor before output processor.
The best use cases are debugging or monitoring when there are performance issues with a system that may have been caused by one or more events. A good example would be to determine where certain messages were created during execution time of an application using logging statements .
This is also useful if you’re not sure what happened in between two log files. It provides insight into how your systems behave under different scenarios so you can better understand their behavior patterns and anticipate potential bottlenecks at runtime (custom).