Alerting on traffic-related issues

So far, we measured the latency of our applications, and we created alerts that fire when certain thresholds based on request duration are reached. Those alerts are not based on the number of requests coming in (traffic), but on the percentage of slow requests. The AppTooSlow would fire even if only one single request enters an application, as long as the duration is above the threshold. For completeness, we need to start measuring traffic or, to be more precise, the number of requests sent to each application and the system as a whole. Through that, we can know if our system is under a lot of stress and make a decision on whether to scale our applications, add more workers, or apply some other solution ...

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