Networking
Understanding the path
Observe transport, DNS, and endpoint behavior separately. A reachable port is only one part of a successful request.
Independent technical notes
Reliable systems start with simple building blocks.
A small collection of practical notes on service availability, network paths, and careful infrastructure changes.
Operations
Design for safe changes
Validate configurations before applying them. Keep rollback paths and preserve healthy production services.
Reliability
Measure what matters
Health checks, real requests, and capacity observations answer different questions. Use each deliberately.
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