System Design
Capacity planning, trade-off analysis, and design decisions documented while the context was still fresh.
Architecture Decisions 1
- Sizing a Payment Gateway for Peak Traffic
Back-of-envelope math for throughput, connection pools, and the assumptions that broke during Black Friday.
Engineering Notes 1
- Read-Heavy vs Write-Heavy: A Design Checklist
Questions I ask before choosing caching, replication, or sharding — a reusable checklist from five system designs.