13 min read Stack vs Heap Allocation Every running program uses two distinct memory regions for dynamic data: the stack and the heap. […] Read article
9 min read Config Data Model A configuration management system stores each configuration entry as a structured record with the following fields: key […] Read article
9 min read Real-Time Scoring Pipeline Every transaction enters the fraud scoring pipeline synchronously before a payment decision is returned. The flow: transaction […] Read article
9 min read Double-Entry Accounting A digital wallet is a ledger, and the correct foundation for any ledger is double-entry accounting. Every financial […] Read article
10 min read Provider Schedule Model A provider’s schedule is defined at two levels: recurring availability rules and date-specific overrides. Recurring rules describe […] Read article
10 min read Driver State Machine Every driver in the system exists in one of four states: offline, available, on_trip, or returning. The […] Read article
8 min read Training Job Orchestration A training job submission API accepts the full specification of a run: the training script path, the […] Read article
9 min read Calendar and scheduling systems look deceptively simple on the surface but contain significant engineering depth. Recurring events, timezone transitions, multi-user […] Read article
9 min read Poll and voting systems appear in everything from social media reactions to high-stakes organizational decisions. The engineering challenges span idempotent […] Read article
8 min read Designing a media encoding pipeline requires coordinating upload handling, distributed transcoding, codec decisions, and delivery optimization into a coherent system. […] Read article