Handling faults

Stream processors are naturally resilient and forgiving of transient errors because they employ backpressure and automatically retry failing batches. However, hard errors, if not handled properly, can cause a traffic jam that results in dropped messages. This recipe will show you how to delegate these errors as fault events so that good messages can continue to flow.

How to do it...

1. Create the project from the following template:

$ sls create --template-url https://github.com/danteinc/js-cloud-native-cookbook/tree/master/ch8/handling-faults --path cncb-handling-faults

2. Navigate to the cncb-handling-faults directory with cd cncb-handling-faults.
3. Review the file named serverless.yml.
4. Review the file named handler...