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These curated tracks turn the blog into a guided course: start with the right fundamentals, move into internals, and end with design trade-offs you can use at work.
A step-by-step guide to mastering large-scale system design, from fundamentals to advanced patterns.
Master Apache Kafka: from architectural internals to production-ready event-driven systems.
Deep dive into JVM internals, concurrency, and high-performance Java programming.
Data modeling, indexing, sharding, cache strategy, and the physics of storage engines at scale.
Click any component to deep dive into its architectural patterns and implementation details.
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Pick a domain and move through it in order. Each masterclass is a curated sequence of 10+ deep dives designed to take you from fundamentals to staff-level engineering.
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Top Articles
High-signal articles selected for relevance, freshness, and depth so new readers can start strong.
The Mental Model A monotonic stack is a stack that maintains its elements in a strictly increasing or decreasing order. It is the "Silver Bullet" for problems where an element's value depends on its closest greater/small…
The Mental Model A sliding window is just a sub-segment of an array that expands and shrinks based on a condition. Instead of recalculating the whole segment, we only process the element entering and the element leaving.…
Case Studies
These pages now use a dedicated case-study framework with requirements, APIs, HLD/LLD, scaling challenges, trade-offs, and takeaways.
Database Sharding Part 7: Case Study - Scaling Discord to Billions We have spent the last 6 parts of this series exploring the theoretical mathematics, routing algorithms, and migration playbooks for distributed database…
Part 7: Case Study - The Global Fintech Ledger This final part brings the full series together using a realistic fintech ledger architecture. The business requirement sounds simple: never lose money, never create money,…
Multi-Region Disaster Recovery (DR) If a complete AWS region goes down, your system must keep running. Designing for regional failure requires moving from "highly available" to "disaster-proof." 1. Warm Standby (The Cost…
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Jump into related content through topic hubs instead of dead-end posts.
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Start with a learning path, dive into a case study, and use the new internal linking system to keep going deeper.