8 min read Why Model Serving Is Not Trivial Deploying a model to production is an engineering discipline separate from training one. A […] Read article
9 min read Database Schema Migration System Low-Level Design A schema migration system manages the evolution of a database schema alongside application code. […] Read article
8 min read A scheduled task manager triggers recurring jobs on cron schedules reliably across distributed infrastructure. The core problems are: parsing cron […] Read article
7 min read Message Deduplication System Low-Level Design Distributed messaging systems face a fundamental challenge: networks are unreliable, and any message may be […] Read article
8 min read Saga Compensation Pattern Low-Level Design Distributed transactions across microservices cannot use two-phase commit at scale — it introduces tight coupling […] Read article
7 min read Referral Program System: Low-Level Design A referral program drives user acquisition by rewarding existing users who bring in new ones. […] Read article
9 min read Content Recommendation System: Low-Level Design A content recommendation system must serve personalized item lists at low latency while continuously incorporating […] Read article
8 min read Threaded Comment System: Low-Level Design Threaded comment systems power discussion on news sites, forums, Reddit-style boards, and product pages. The […] Read article
8 min read Knowledge Base System Low-Level Design A knowledge base must do three things well: let authors maintain accurate articles without losing […] Read article
8 min read Bulk Data Import System Low-Level Design Bulk import is one of those features that looks straightforward until a user uploads […] Read article