Two debugging notes from a Cloudflare Workers tarot app
Two unrelated bugs from one debugging day on a Next.js + Cloudflare Workers app: an SSE hang from a `pull` ReadableStream, and a `null/undefined` validation drift.
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11 posts on DevOps, SRE, and cloud infrastructure.
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Debugging Next.js on Cloudflare Workers: Three Runtime Gotchas
Three bugs I hit after deploying swill.fun to Cloudflare Workers — next-mdx-remote crashing at runtime, params becoming a Promise, and build artifacts polluting git history.
VirtualService Routing Fails After EnvoyFilter Injects a Header
In Istio, headers added by EnvoyFilter do not affect VirtualService matches: Envoy resolves routes before HTTP filters run. Use ClearRouteCache or change the design.
Why minDomains Is Critical for TopologySpreadConstraints on EKS with EBS
topologySpreadConstraints with DoNotSchedule can still put every pod in one AZ on EKS: default minDomains is 1, so skew stays zero until you set minDomains or use zone podAntiAffinity.
ArgoCD Application Stuck on Refresh - Issue Summary
ArgoCD v3 apps stuck in refresh: strategicpatch panics on nested arrays in podAnnotations. Server-Side Diff workaround and permanent Helm upgrade fix.