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5 articles

Architecture diagram showing a notification system with a publisher, message queue, delivery service, and client connections using Server-Sent Events

Building a Real-Time Notification System from Scratch

Build a production-ready real-time notification system with Server-Sent Events and WebSockets: delivery guarantees, reconnection, persistence, read state.

Mar 21, 2024·4 min read

Diagram showing Markdown text being transformed through lexer tokens into an abstract syntax tree and rendered HTML

Tutorials

Building a Markdown Parser from Scratch in TypeScript

Build a Markdown parser step by step — lexical analysis, AST construction and HTML rendering — to understand how text processing engines work inside.

Apr 6, 2023·5 min read

Inverted index data structure mapping terms to document IDs with frequency scores

Tutorials

Building a Full-Text Search Engine from Scratch

How full-text search engines work inside: tokenization, inverted indexes, TF-IDF scoring, and building a working search engine in TypeScript step by step.

Nov 15, 2021·5 min read

Migration timeline showing JavaScript files progressively converting to TypeScript with strict mode stages

Tutorials

Migrating from JavaScript to TypeScript Incrementally

A step-by-step guide to migrating JavaScript projects to TypeScript without pausing feature work: configuration, strict mode adoption and team workflows.

Sep 27, 2021·4 min read

Go application structure diagram showing Chi router middleware chain and handler layers

Tutorials

Building a REST API with Go and Chi

A hands-on tutorial for a production-ready REST API with Go and Chi: routing, middleware, JSON handling, error responses and graceful shutdown.

Jul 17, 2021·6 min read

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