{"id":2649,"date":"2026-03-04T09:30:00","date_gmt":"2026-03-04T09:30:00","guid":{"rendered":"https:\/\/mugnos-it.com\/?p=2649"},"modified":"2026-03-03T12:51:07","modified_gmt":"2026-03-03T12:51:07","slug":"why-should-everyone-know-the-principles-of-sre-%f0%9f%94%a7%f0%9f%93%88","status":"publish","type":"post","link":"https:\/\/mugnos-it.com\/pt\/why-should-everyone-know-the-principles-of-sre-%f0%9f%94%a7%f0%9f%93%88\/","title":{"rendered":"Why should everyone know the principles of SRE? \ud83d\udd27\ud83d\udcc8"},"content":{"rendered":"
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Learning SRE principles was an important step in maturing my view of resilient systems \u2014 especially when it comes to keeping what we build running well in the day to day and over time.<\/p>\n\n\n\n

No, I\u2019m not just talking about monitoring, automated deploys, or alerts. I\u2019m talking about the philosophy behind all of it. SRE (Site Reliability Engineering)<\/strong> is not a stack, nor a tool. It\u2019s a mindset shift. A mature way of thinking about systems that truly sustain themselves over time.<\/p>\n\n\n\n

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So, what exactly is SRE?<\/strong><\/h3>\n\n\n\n

SRE emerged inside Google as a real response to a simple question: how do you keep large, complex, constantly evolving systems running well \u2014 without slowing down innovation?<\/em><\/p>\n\n\n\n

The answer didn\u2019t come in the form of a tool. It came in the form of principles. A new way of thinking about reliability, risk, automation, and operations<\/strong> \u2014 in a systemic and continuous way.<\/p>\n\n\n\n

And to me, that\u2019s what a good master would teach: the path behind the path, not a \u201c10 steps to create a CPU alert\u201d tutorial. AI already handles that for us today, right? \ud83d\udc40<\/p>\n\n\n\n

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Tenets, Principles, and Practices<\/strong><\/h3>\n\n\n\n

At the heart of SRE are the tenets<\/strong> \u2014 those core beliefs that guide how we deal with reliability. They unfold into clear principles<\/strong> (like embrace risk<\/em>, eliminate toil<\/em>, release engineering\u2026<\/em>) and materialize into real practices<\/strong> such as SLIs, SLOs, error budgets, RCA, testing, development, incident response\u2026<\/p>\n\n\n\n

And that\u2019s where the game changes.<\/p>\n\n\n\n

When you start seeing the system as a whole<\/strong>, and not just the feature being delivered, your way of operating shifts. You begin to think in terms of maturity, impact, predictability, and sustainability.<\/p>\n\n\n\n

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Far beyond automated deploys<\/strong><\/h3>\n\n\n\n

A lot of people still associate SRE with \u201cdoing CI\/CD the right way.\u201d But the truth is, release engineering is just one part of the whole.<\/p>\n\n\n\n

SRE is about ensuring that what was delivered is actually working, performing, and being reliable in production. It goes beyond thinking about deploys: it\u2019s about understanding the system as a whole \u2014 its behaviors, its risks, and its limits.<\/p>\n\n\n\n

And more than just understanding it, it\u2019s about being able to measure all of it clearly, using well-defined metrics (SLIs) and realistic targets (SLOs). Because at the end of the day, reliability is not opinion \u2014 it\u2019s data.<\/p>\n\n\n\n

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The 7 SRE Principles (for real, summarized)<\/strong><\/h3>\n\n\n\n

For those who\u2019ve never seen them all together, here\u2019s a quick summary of the 7 core SRE principles<\/strong> \u2014 the ones that shape the entire practice:<\/p>\n\n\n\n