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<meta name="description" content="This blog post describes how developers can leverage Apache Flink&rsquo;s built-in metrics system together with Prometheus to observe and monitor streaming applications in an effective way. This is a follow-up post from my Flink Forward Berlin 2018 talk (slides, video). We will cover some basic Prometheus concepts and why it is a great fit for monitoring Apache Flink stream processing jobs. There is a