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The DevOps 2.2 Toolkit by Viktor Farcic

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Differentiating services based on their types

Before we start instrumenting our services, we should discuss services we're deploying. They can be divided into three categories: online services, offline services, and batch processes. While there is overlap between each of those types and it is often not that easy to place a service into only one of them, such a division will provide us with a good understanding of the types of metrics we should implement.

We can define online services as those that accept requests from another service, a human, or a client (for example, browser). Those who send requests to online services often expect an immediate response. Front-end, APIs, and databases are only a few of the examples of such services. Due ...

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