Slack's Migration to a Cellular Architecture
Briefly

Cooper Bethea, an experienced infrastructure engineer, discusses his role in a challenging project at Slack, where he transitioned user-facing production services from a monolithic to a cellular topology. Despite his background in software engineering, he emphasizes his strength in collaboration over mathematical expertise. Bethea highlights the complexities and frequent failures associated with large migration projects, even when they seem simple, illustrating the necessity for careful planning and execution in infrastructure changes.
I'm better at people than I am at math. I ended up in this place where I'm doing a lot of work on site reliability and uptime, mostly because I was willing to hold a pager.
One thing I would ask you to consider as you're listening to this talk is these large migration projects often fail or run aground, even when you thought they would be simple.
Read at InfoQ
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