How GitHub Stores and Serves Git Repositories
Inside Spokes, the three-replica system that keeps half a billion repositories online for a hundred million developers
Search across 219 posts, 23 explainers, and 79 topics
PostgreSQL Internals: How Queries Actually Execute
From the moment SELECT leaves your app to the row that lands back, what really happens inside Postgres
Lamport Clock in Distributed Systems
The 1978 logical clock that taught distributed systems how to order events without a shared wall clock
Hybrid Logical Clock in Distributed Systems
The HLC pattern that combines wall clock time with a logical counter to give you causal ordering and human readable timestamps
Low Watermark: How Distributed Systems Know What's Safe to Delete
The log cleanup pattern that keeps your WAL from eating all your disk space
High Watermark: How Distributed Systems Know What's Safe to Read
The commit index pattern that prevents your cluster from serving stale or inconsistent data
REST vs GraphQL vs gRPC: How to Pick the Right API Protocol
Architecture, performance, trade-offs, and the decision framework that actually works in production
Transactional Outbox Pattern: Never Lose an Event Again
How to publish messages reliably without distributed transactions, with real implementations using polling and CDC
Kafka vs RabbitMQ vs Amazon SQS: Picking the Right Message Broker
Architecture, throughput, cost, delivery guarantees, and the real trade-offs developers hit in production
OpenTelemetry in Production: A Complete Setup Guide
Instrumentation, Collector pipelines, sampling, Kubernetes deployment, and the mistakes that cost teams weeks
Model Context Protocol (MCP) Explained
How MCP works, why it matters, and how to build your first MCP server
What Happens When You Type a URL in the Browser
The complete journey from pressing Enter to pixels on screen, explained for software developers
How Database Locks Work: A Complete Guide
Shared locks, exclusive locks, deadlocks, MVCC, and how to stop your transactions from fighting each other
MongoDB Cheat Sheet: 100+ Commands with Real Examples
The practical guide to mongosh commands, queries, aggregation, and database management you will actually use
Architecting Multi-Agent AI Swarms: A System Design Deep Dive
How to design, orchestrate, and scale systems where multiple AI agents work together
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