Zarvexis
Independent coverage of infrastructure, networking and data practice.
Managing Secrets Without Losing Sleep
August 10, 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.
Temporary access credentials minted via workload identity frameworks eclipse static api keys across every security vector. Though bootstrap attestation mechanisms differ across providers, the exchange pattern is identical: a cryptographically signed identity proof traded for temporary tokens expiring in minutes.
When to Choose a Queue Over a Request
August 12, 2026
Direct synchronous communication remains standard practice because execution flow is intuitive: an upstream service queries, the target responds, and delay is immediately measurable. Message queues become necessary when processing duration exceeds HTTP timeouts or when traffic spikes must be leveled…
Practical Notes on Postgres Connection Pooling
August 17, 2026
Handling PostgreSQL backends imposes substantial overhead because each active client spawns a dedicated process consuming significant RAM, making intermediary connection management mandatory at scale. While session-level pooling preserves compatibility seamlessly, transaction pooling aggressively re…
A Practical Guide to API Rate Limiting
June 10, 2026
Most engineering teams acknowledge the necessity of rate limiting while neglecting its underlying architecture. Relying purely on client IP addresses collapses under carrier-grade NAT environments, where countless mobile subscribers route through shared gateways and end up throttled together as one …
The Operator's Guide to Load Testing
June 3, 2026
Synthetic load generation consistently fails to replicate production outages because artificial traffic profiles lack real-world dynamics. Sending constant, uniformly spaced queries against a solitary URI tests that specific route in isolation. Real crashes stem from synchronized client retry spikes…
More reading
- Cache Invalidation Patterns That Survive Traffic — Data, July 24, 2026
- Multi-Region Failover Planning — Operations, April 21, 2026
- HTTP/3 and QUIC: What Changed for Operators — Networking, August 4, 2026
About us
We cover the unglamorous middle of software: queues that back up, caches that lie, and DNS at 3 a.m. Everything is written from real operational experience.