Software Development Malaysia

Handing systemic exceptions

If there exists a systemic exception our retry logic may never liberate, stopping a thread from doing helpful work-effectively "poisoning" the queue, unless of course the content is taken away by a few other means. Because of this, messages which cause systemic exceptions are known as poison messages.

Our message-processing infrastructure must move these poison messages aside, into another queue to ensure that regular processing can continue. At this time, software development Malaysia reasonably certain that the exception is definitely an actual error that requires some analysis.

The chances are someone will have to take particular notice at these poison messages to determine what went wrong within the system before determining what related to them. Possibly there is an easy coding error, so we can deploy a brand new version which will repair it. Following the fix is deployed, because we have our business data inside a message, we are able to still retry it by coming back the content to the original queue. In addition, we did not lose any company data despite the fact that there is an insect within the system!

Within an atmosphere with multiple queues serving regular message processing logic, it might seem sensible to produce a single centralized error queue that all poison messages might be moved. This way, we'd only have to consider a single queue to understand that everything's working correctly or the number of system errors we need to handle.

Being an additional advantage of moving poison messages for an error queue, the software development Malaysia does not need to search through log files to obtain the complete exception particulars. Rather, we are able to range from the stack trace combined with the message data. Then your developer may have both business data that brought towards the failure along with the particulars from the failure itself-something not usually taken with standard logging techniques.

Summary

Getting 2413 severe exceptions overnight regularly is a big business failure, additionally to some technical one.