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35Algorithm patterns & code templates
System Design
37End-to-end architecture problems
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67Design patterns & practical code
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59Deep dives into core tech
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35Production systems & operations
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38Consensus, replication & more
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84Kernel, networking & system calls
Cheat Sheets
24Quick reference cards for interviews
Recent Posts
System Design: Object Storage (Erasure Coding, Flat Namespace, and Exabyte Scale)
System Design
Mar 31, 2026 · 51 min
System Design: AI Software Engineer (From Autocomplete to Autonomous App Builder)
System DesignAI
Mar 25, 2026 · 94 min
RAG and LLM Platform at Scale: Ingestion, Retrieval, Generation, and Evaluation for 10M Queries/Day
System DesignAI
Mar 22, 2026 · 105 min
Staff+ Engineering
Leadership
DirectorTechnology Radar Creation
“Use four rings (Adopt, Trial, Assess, Hold) to classify technologies by how ready your org is to use them”
Org Design
GrowthRemote-First Org Design
“Remote-first is not the same as remote-friendly. Remote-first means every process, meeting, and decision is designed for distributed participants by default. If your office employees have an information advantage over remote ones, you're remote-friendly at best”
530+Articles
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Learning Path
Discover Today
ScyllaDB
A shard-per-core NoSQL database built for low latency at serious scale
Rate Limiting & Throttling
Caps request rates to protect services from abuse, DDoS, and resource exhaustion
Vector Clocks & Version Vectors
Lamport clocks tell you 'event A happened before event B' but cannot tell you whether two events are truly concurrent. Vector clocks can. If neither vector dominates the other (one is not component-wise less than or equal), the events are concurrent, and you know there might be a conflict