field notes from building infra

systems, startups, containers, ci/cd, media, performance, and the ugly parts of shipping.

Muse Spark 1.1 Replaced Claude Sonnet 4.6 for Me A personal evaluation of Muse Spark 1.1 for tool-driven inference and DevOps work, using the CommandCode harness. Muse Spark 1.1InferenceDevOpsAgents 2026-07-13 Notes on Building a WebRTC SFU in Rust Architecture notes on media routing, renegotiation, jitter estimation, bounded recording, and the limits of an SFU prototype. RustWebRTCReal-time MediaSystems Engineering 2026-01-03 A Jenkins Pipeline That Can Fail Safely A practical Jenkins pipeline built around immutable artifacts, bounded credentials, explicit promotion, and rollback evidence. JenkinsCI/CDDevOpsAutomation 2026-01-03 Choosing a Container Base Image Without Guessing A current, measurement-first guide to Alpine, Debian slim, Distroless, and Bun container images. ContainersDockerSecurityDevOps 2026-01-02 Rebuilding UltraBalancer in Rust: What the Benchmark Actually Proves The current UltraBalancer architecture, its published 500K+ RPS benchmark, and the limits behind that number. RustSystems ProgrammingPerformanceLoad Balancing 2025-12-15