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This month I continue to cover Observability, looking at the four golden signals (latency, saturation, errors, and throughput). Over the last year of covering Observability, I've listed the features that APM tools provide, covered the top 5 reasons for using APM, explained the details of how the various Observability techniques fit together and detailed the 3 pillars of Observability.

This time I'm explaining the four golden signals:

The four golden signals are often co-dependent. A typical scenario is for saturation to be too high on some resource, causing errors to increase, throughput to start failing (decrease) and latency consequently to increase. The four golden signals are often a great starting point for defining your SLOs (service level objectives) which tells you if you are providing adequate service to your customers. A great follow on is to define your Error Budgets. Now on to all the usual newsletter list of links, tips, tools, news and articles, and as usual I've extracted all the tips into this month's tips page including the tips from that error budget article I just mentioned

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Last Updated: 2023-01-29
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