This month completes our “Create Observability” series. We will design, in flowchart form, each of the queue workers. We will describe each event to be emitted by each worker. We’ll see a webpage useful for observing queues and events, thus providing observability. As we saw last month, the flowcharts document the business process so that it does not become unknown “tribal knowledge”. Finally, we’ll discover that the final queue contains precisely what our stakeholders need for customer service resolution. by Edward Barnard