Zenorath
Practical engineering writing for people who keep systems alive.
HTTP/3 and QUIC: What Changed for Operators
August 13, 2026
QUIC moves the transport into userspace and encrypts most of the header, which is lovely for privacy and mildly annoying for anyone debugging with tcpdump. Flow control and congestion data that used to be visible on the wire now live behind the TLS key log.
Operationally, the wins are real: connection migration means a phone walking from Wi-Fi to LTE keeps its downloads going instead of restarting them. For latency-sensitive APIs, the zero round-trip resumption matters more than any head-of-line blocking debate.
A Practical Guide to API Rate Limiting
July 28, 2026
Rate limiting is one of those features everyone agrees is important and almost nobody designs deliberately. The naive per-IP token bucket works until you meet carrier-grade NAT, where a hundred thousand mobile users share a handful of addresses and your limiter punishes them as a single entity.…
Managing Secrets Without Losing Sleep
September 21, 2026
Organizations typically transition between two distinct security phases: managing static secrets in encrypted archives and preparing for formal compliance audits. Navigating that gulf requires automated key cycling, immutable audit records, and acknowledging that human operators must not access live…
The Operator's Guide to Load Testing
June 28, 2026
Benchmark simulations repeatedly fail to anticipate live incidents because synthetic request topologies overlook messy reality. Evenly distributed traffic aimed at single endpoints provides isolated micro-benchmarks. Real degradation occurs when synchronized retry floods slam backends after a moment…
Practical Notes on Postgres Connection Pooling
September 3, 2026
Each incoming PostgreSQL connection instantiates an isolated operating system process with dedicated memory overhead, necessitating a dedicated pooling proxy in growing deployments. Classic session pooling acts transparently, whereas high-throughput transaction pooling frequently disrupts stateful f…
More reading
- Structuring DNS for Reliability — Networking, April 24, 2026
- Understanding TLS 1.3 Session Resumption — Security, May 8, 2026
- Multi-Region Failover Planning — Operations, August 23, 2026
About us
Founded by former SREs and network engineers, our editorial desk focuses on the practical side of operating distributed services - less hype, more packet captures.