Architecture

January 2026

• Jan 1, 2026TechnologyExploring Deployment Strategies in SoftwareThe SEC proceeding found the flag that activated the old Power Peg code had been reused for the new release, so a partial deployment armed it, and nothing automatically verified consistency or shut it down. A one-box or canary rollout compares the new instances against the old and catches exactly that divergence. The page covers recreate, rolling, blue-green, canary and shadow deployments, plus expand-contract for schema changes.23 MIN61.1k

December 2025

• Dec 30, 2025TechnologyScaling Cloud Systems: Strategies and PatternsMapping many logical shards onto few physical ones means adding hardware never requires reorganizing the shard layout, which is why the 2012 design became a reference implementation. The page is blunt that adding servers to a poorly designed system just produces a poorly designed system with more servers, and covers load balancing, statelessness, cache invalidation, read replicas and replication lag, queues, and the CAP tradeoff during a partition.26 MIN64.7k
• Dec 25, 2025TechnologySecure System Design Principles for Enhanced SecurityJerome Saltzer and Michael Schroeder published eight design principles at MIT in 1975, and nearly fifty years on they remain the foundation, because the underlying challenge has not changed. Secure systems resist attack through how they are structured, not what is bolted on afterward: a castle with walls and a moat beats a house with an alarm. Target's 2013 breach reached payment systems through an HVAC vendor, which network segmentation would have contained.22 MIN40.1k