Tyrvexon
Long-form technical notes, written by operators for operators.
What Good Observability Actually Looks Like
May 17, 2026
Dashboards multiply like rabbits and answer questions nobody asked this month. Good observability starts from the opposite direction: the alert fired, a human is awake, and the tooling should answer 'what changed' within a minute.
In practice that means a small set of high-cardinality traces on the request path, deployment markers on every graph that matters, and logs structured enough that you can pivot from a customer ID to a timeline without five grep commands.
Reading Latency Percentiles Without Fooling Yourself
April 26, 2026
Arithmetic averages hide the extreme tail latencies that percentiles make evident. Even if an endpoint posts an average duration of fifty milliseconds, one out of twenty calls might experience a grueling two-second delay; customers subjected to cold paths and overloaded database shards are the ones …
HTTP/3 and QUIC: What Changed for Operators
July 14, 2026
Implementing transport logic inside user space alongside encrypted protocol framing gives QUIC superior privacy while frustrating network operators relying on packet sniffers. Diagnostic data such as congestion state and window allocations are obscured behind cryptographic boundaries.…
Managing Secrets Without Losing Sleep
August 21, 2026
Infrastructure teams generally experience two stages of secret maturity: storing variables in local encrypted repositories until an audit demands accountability. Crossing that divide entails rigorous credential turnover, verifiable access logs, and eliminating direct human access to runtime secrets.…
The Operator's Guide to Load Testing
May 23, 2026
Load tests fail to predict production for a consistent reason: the traffic shape is wrong. Uniform random requests against one endpoint tell you about that endpoint. The production killer is the burst of clients retrying in sync after a thirty-second blip, or the cache-cold crawl at 5 a.m. when the …
More reading
- Practical Notes on Postgres Connection Pooling — Data, May 13, 2026
- A Field Guide to Graceful Degradation — Engineering, July 17, 2026
- A Practical Guide to API Rate Limiting — Engineering, July 11, 2026
About us
We are a small team of infrastructure engineers and technical writers. We publish what we learn running production systems: incident retrospectives, protocol deep-dives and tooling notes.