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.
#uptime
Everything we have written about uptime.
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.
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.