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[System Design] GPS Location Ingestion at Scale: gRPC Streaming, MQTT & Kalman Filter in Ride-Hailing

[System Design] GPS Location Ingestion at Scale: gRPC Streaming, MQTT & Kalman Filter in Ride-Hailing

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5 min read
✍️ How Multiple Devices Edit One Google Doc

✍️ How Multiple Devices Edit One Google Doc

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1 min read
Design a Distributed Lock Service: Fencing Tokens and the Failure Modes

Design a Distributed Lock Service: Fencing Tokens and the Failure Modes

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9 min read
Building Kafka from Scratch: A Message Broker in 1800 Lines of C++23

Building Kafka from Scratch: A Message Broker in 1800 Lines of C++23

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11 min read
Design a News Feed: Fan-Out, Ranking, and the Celebrity Problem

Design a News Feed: Fan-Out, Ranking, and the Celebrity Problem

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8 min read
Stop Using Raw Vector Search: Implement GraphRAG with Spring AI and Neo4j

Stop Using Raw Vector Search: Implement GraphRAG with Spring AI and Neo4j

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2 min read
Runtime Governance Evidence Anchors in 2026: A Public Ledger for Budget and Accountability Decisions

Runtime Governance Evidence Anchors in 2026: A Public Ledger for Budget and Accountability Decisions

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8 min read
Roast my approach to solve this question: Coffee Ordering System (Salesforce interview question)

Roast my approach to solve this question: Coffee Ordering System (Salesforce interview question)

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1 min read
Multi-Cloud Workload Distribution Strategies

Multi-Cloud Workload Distribution Strategies

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6 min read
A file-based work-bus for orchestrating a fleet of agent CLIs — coordination without a message broker

A file-based work-bus for orchestrating a fleet of agent CLIs — coordination without a message broker

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5 min read
System Design Interview Roadmap (10 Concepts That Matter Most)

System Design Interview Roadmap (10 Concepts That Matter Most)

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14 min read
Lessons From 9+ Years Building Scalable Real-Time Systems in Production

Lessons From 9+ Years Building Scalable Real-Time Systems in Production

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2 min read
Building a Resilient Checkout in NestJS: Retry, Idempotency, and a System That Tunes Itself

Building a Resilient Checkout in NestJS: Retry, Idempotency, and a System That Tunes Itself

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5 min read
Architecture Review Boards: Best Practices

Architecture Review Boards: Best Practices

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5 min read
Your DB Is Still Red After Adding a Cache — Here's Why

Your DB Is Still Red After Adding a Cache — Here's Why

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4 min read
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