How Git Stores Data Internally: The Object Model Explained
A practical walk through blobs, trees, commits, the index, refs, and pack files, with hands-on commands you can run today
Search across 223 posts, 23 explainers, and 80 topics
Vector Database Deep Dive: How They Actually Work
An engineer's guide to embeddings, ANN search, HNSW, IVF, and choosing between pgvector, Pinecone, Qdrant, Weaviate, and Milvus
Saga Pattern Explained: Distributed Transactions for Microservices
A practical guide to choreography, orchestration, compensating transactions, and the production traps that come with running sagas at scale
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
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
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