If ServiceControl is our brain, and ServiceInsight is our eyes, then ServicePulse is our ears, listening for things that go wrong. It's our nose too, as it lets us know when something doesn't smell quite right.
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Of course, the metaphor about hearing and smelling is a bit misplaced because ServicePulse is just a web application that queries ServiceControl data. It's ServiceControl that knows these things, but it's ServicePulse that shows it to us.
ServicePulse is a web application that displays the health of our system. It allows us to see which endpoints are running and responsive, and which ones may have failed. It shows us messages that have failed and allows us to retry or archive those messages. It also allows us to configure custom checks to ensure that resources outside our system (that our system requires) are also healthy.
The default URL for ServicePulse is http://localhost:9090, but of course, just as with ServiceControl, this is configurable. If you launch ServicePulse...