What Is High Availability and How Do You Design for It?
High availability keeps systems running when parts fail. Here is how redundancy and failover work, what each extra nine of uptime really costs, and how to pick the right target.
#reliability
Everything we have written about reliability.
What Is Chaos Engineering? A Practical Guide to Starting Small
What chaos engineering is, how a controlled failure experiment works, and safe ways for any team to start small before testing in production.
SLA vs SLO vs SLI: Reliability Terms Explained With One Example
SLIs measure, SLOs set targets and SLAs make promises with consequences. One running example shows how the 3 connect and how to set each without overpromising.
Cloud & DevOps
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DevOps vs SRE: What's the Difference and How Do They Work Together?
DevOps sets the goals, SRE supplies a concrete playbook for reliability. Here is how their goals, metrics and team structures differ and how to run both without turf wars.
What Is Site Reliability Engineering (SRE)? Error Budgets, Toil and More
SRE turns reliability into numbers teams can manage. Here is how error budgets and toil limits work, how SRE relates to DevOps, and how to apply it outside big tech.
How to Read a Cloud SLA: Uptime, Credits and Exclusions
Turn uptime percentages into real downtime, understand service credits and spot the exclusions and claim rules buried in cloud SLAs.