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Scaling infrastructure and codebase

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How Netflix Streams to 320+ Million Users Without Crashing

How Netflix Streams to 320+ Million Users Without Crashing

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3 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
Design a URL Shortener: The Constraints Interviewers Actually Probe

Design a URL Shortener: The Constraints Interviewers Actually Probe

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9 min read
Design a Notification Fan-Out Service: Push, Email, SMS at Scale

Design a Notification Fan-Out Service: Push, Email, SMS at Scale

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8 min read
From Zero to One Million: The 2026 Engineering Playbook Every Developer Must Read

From Zero to One Million: The 2026 Engineering Playbook Every Developer Must Read

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15 min read
Understanding Horizontal vs. Vertical Scaling in Software Engineering

Understanding Horizontal vs. Vertical Scaling in Software Engineering

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1 min read
OpenAI scales PostgreSQL for 800 million users with a single writer (no sharding)

OpenAI scales PostgreSQL for 800 million users with a single writer (no sharding)

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6 min read
Day 24: Real-Time Personalization - AI System Design in Seconds

Day 24: Real-Time Personalization - AI System Design in Seconds

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3 min read
Kubernetes HPA Best Practices: When CPU Works, Why Memory Almost Never Does

Kubernetes HPA Best Practices: When CPU Works, Why Memory Almost Never Does

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5 min read
Design a Feature Flag Service: 100k SDK Clients and the SSE Protocol Reframe

Design a Feature Flag Service: 100k SDK Clients and the SSE Protocol Reframe

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11 min read
Design a Feature Flag Service: 100k SDK Clients and the SSE Protocol Reframe

Design a Feature Flag Service: 100k SDK Clients and the SSE Protocol Reframe

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11 min read
Design a Job Scheduler at 10M Jobs/Day: 4 Components, 3 Failure Modes

Design a Job Scheduler at 10M Jobs/Day: 4 Components, 3 Failure Modes

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12 min read
Design a Distributed Counter: Views, Likes, and the Hot Key You Forgot

Design a Distributed Counter: Views, Likes, and the Hot Key You Forgot

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12 min read
Why Your AI Workflows Break at Scale—And How to Build Systems That Don't

Why Your AI Workflows Break at Scale—And How to Build Systems That Don't

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8 min read
Web hosting vs managed infrastructure: what growing businesses actually need

Web hosting vs managed infrastructure: what growing businesses actually need

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3 min read
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