Designing systems that survive growth — from patterns to system design.
How hotel booking confirmation works after payment: authorize, book with the supplier, then capture, and what happens if another site sells the room first.
When to use a CDN on Azure, from a flash sale where one App Service served 1.6 million photo downloads. What to cache, and what never to.
When to use Azure Managed Redis, which replaces Azure Cache for Redis, learned from a flash sale that hit Azure SQL 2,200 times a second.
A decision framework for the Foundry model catalog: LLMs vs SLMs, chat vs reasoning models, and specialized models, with real business use cases.
Program.cs stops scaling around twenty endpoints. Here is a vertical-slice layout for Minimal APIs that keeps routing, validation and handlers organised.
A repeatable method for legacy discovery: turning the business rules, workflows and history a codebase never documented into knowledge Copilot uses.
A handbook for GitHub Copilot Agents on legacy code: what is a real feature, what is a pattern, and how to build an AI development team around it.
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