We cut our EKS bill 43% and nobody noticed
At my Lagos fintech, I moved every stateless workload onto Karpenter spot pools over six weeks. The savings were real; the interesting part was the guardrails that kept latency flat while we did it.
Author
Babafemi Bulugbe
Dispatch stories and practical answers shared with the community.
Dispatch
Terraform state, four teams, one repository
Splitting a monolithic state file without a maintenance window, and the two mistakes that cost us a weekend.
An LLM gateway that pays for itself
Routing, caching and per-team budgets in front of three model providers, built in a fortnight, mostly with things we already ran.
The DNS outage that taught us to read our own runbooks
Ninety minutes of partial failure, a runbook that referenced a decommissioned bastion, and what we changed the week after.
What Nigerian SRE interviews actually ask in 2026
Twenty-two hiring managers, eleven cities, one uncomfortable pattern about take-home exercises.
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