If you've ever been woken up at 3 AM by a pager, stared at a dashboard wondering which metric actually matters, or debated whether your system truly needs five nines — this blog is for you.
Welcome. I'm Joao, a software engineer who has spent years building and operating backend systems. Over time, I've gravitated toward the discipline that sits at the intersection of software engineering and operations: Site Reliability Engineering (SRE).
Why This Blog Exists
There's no shortage of SRE content on the internet. Google's SRE books are freely available. Conference talks are on YouTube. So why another blog?
Because most SRE content falls into one of two extremes: either it's abstract theory disconnected from day-to-day work, or it's hyper-specific war stories from companies operating at a scale most of us will never see. There's a gap in the middle — practical, grounded content that helps working engineers adopt SRE thinking in their own teams and systems, regardless of scale.
That's what I want to fill.
I'll write about concepts the way I wish someone had explained them to me when I was starting out: with real context, honest trade-offs, and working examples.
What You Can Expect
Here's a rough map of the territory this blog will cover:
- SRE Principles — SLIs, SLOs, error budgets, and how to make reliability a first-class engineering concern rather than an afterthought.
- Observability — Metrics, logs, traces, and the tooling ecosystem around them. I'll spend significant time on OpenTelemetry, Prometheus, and Grafana.
- Incident Management — How to respond to incidents effectively, run blameless postmortems, and actually learn from failures.
- Toil & Automation — Identifying repetitive operational work and systematically eliminating it.
- Systems Thinking — Understanding how distributed systems fail, capacity planning, and designing for resilience.
- Tools & Practices — Hands-on content with Kubernetes, Docker, CI/CD pipelines, and infrastructure as code.
I'll mix long-form deep dives with shorter, focused posts. Some will be part of structured series; others will be standalone pieces on topics that interest me.
Who This Is For
If you're a software engineer curious about reliability and operations, you're in the right place. If you're a DevOps engineer looking to formalize your practices with SRE principles, same. And if you're a beginner trying to break into the field, I'll do my best to make every post accessible without dumbing things down.
The common thread is a desire to build systems that work — not just in the happy path, but when things go sideways.
Why I Write
Writing is how I learn. When I have to explain a concept clearly enough for someone else to understand, I discover the gaps in my own knowledge. Every post I write makes me a better engineer.
There's also a practical reason: the SRE discipline is still maturing. Many teams are adopting SRE practices in name only, slapping "SRE" on an ops team and calling it done. I think we can do better, and sharing knowledge is a small step in that direction.
What's Coming Next
I'm kicking things off with a series on SRE Fundamentals — starting with what SRE actually is, its core principles, and how it differs from traditional DevOps. From there, I'll move into observability, with a deep focus on metrics and OpenTelemetry.
If any of this resonates, stick around. And if you have topics you'd like me to cover, I'd love to hear from you.
Let's build reliable systems together.