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Service Level Agreement Reliability

It is impossible to properly manage a service, let alone well, without understanding what behaviors are really important to that service and how those behaviors can be measured and evaluated. To this end, we want to define and provide our users with a certain level of service, whether they are using an internal API or a public product. This too is more subtle than it seems at first glance, because these two SLIs – QPS and Latency – could be connected behind the scenes: higher QPS often lead to higher latencies, and it`s common for services to have a power cliff beyond a certain load threshold. Understanding how well a system meets one`s expectations helps decide whether to invest it to make the system faster, more available and more resilient. Alternatively, if the service is working well, perhaps staff time should be spent on other priorities, for example. B to pay off technical debts, to add new features or for the introduction of other products. . . .