Archive - The System Design Newsletter

8 Reasons Why WhatsApp Was Able to Support 50 Billion Messages a Day With Only 32 Engineers

#1: Learn More - Awesome WhatsApp Engineering (6 minutes)

Aug 27, 2023 •

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How PayPal Was Able to Support a Billion Transactions per Day With Only 8 Virtual Machines

#30: Learn More - Awesome PayPal Engineering (4 minutes)

Dec 26, 2023 •

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How Stripe Prevents Double Payment Using Idempotent API

#45: A Simple Introduction to Idempotent API (4 minutes)

May 9, 2024 •

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System Design Playbook 🔥

Download My Playbook for Free

May 23 •

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How YouTube Was Able to Support 2.49 Billion Users With MySQL

#48: Break Into Vitess Architecture (4 minutes)

May 31, 2024 •

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How Uber Computes ETA at Half a Million Requests per Second

#26: And How Online Maps Work Explained Like You’re Twelve (5 minutes)

Dec 3, 2023 •

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How Uber Finds Nearby Drivers at 1 Million Requests per Second

#31: And How Proximity Service Works Explained Like You’re Twelve (5 minutes)

Jan 4, 2024 •

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How Google Ads Was Able to Support 4.77 Billion Users With a SQL Database 🔥

#60: Break Into Google Spanner Architecture (5 Minutes)

Nov 9, 2024 •

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How Shopify Handled 30TB per Minute With a Modular Monolith Architecture 🔥

#63: Break Into Modular Monolith Architecture (3 Minutes)

Dec 22, 2024 •

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How JWT Works ✨

#71: Break Into JSON Web Token (3 Minutes)

May 10 •

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Why Is Redis a Distributed Swiss Army Knife 💭

#50: Break Into Redis Use Cases (5 Minutes)

Jun 20, 2024 •

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How Meta Achieves 99.99999999% Cache Consistency 🎯

#52: Break Into Meta Engineering (4 minutes)

Jul 18, 2024 •

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How Databases Keep Passwords Securely 🔒

#61: Break Into Security Fundamentals (3 Minutes)

Nov 18, 2024 •

How Do Websockets Work ✨

#67: A Simple Introduction to Websockets (3 Minutes)

Feb 28 •

How DNS Works 🔥

#70: Distributed Hierarchical Database for 5.35B Users (2 Minutes)

May 2 •

How Nginx Was Able to Support 1 Million Concurrent Connections on a Single Server ✨

#62: Break Into Nginx Architecture (4 Minutes)

Dec 4, 2024 •

How to Scale an App to 10 Million Users on AWS

#27: And High Scalability Explained Like You're Twelve (6 minutes)

Dec 6, 2023 •

How Apple Pay Handles 41 Million Transactions a Day Securely 💸

#68: Break Into Apple Pay Architecture (5 Minutes)

Mar 27 •

How API Gateway Actually Work ⭐

#73: Break Into API Gateway (3 Minutes)

May 29 •

How Amazon S3 Achieves 99.999999999% Durability

#38: Break Into Incredible Amazon Engineering (7 minutes)

Mar 5, 2024 •

How Amazon S3 Works ✨

#59: Break Into Amazon Engineering (4 Minutes)

Oct 25, 2024 •

How Figma Scaled to 4M Users—Without Fancy Databases 🔥

#69: Break Into Postgres Scalability (4 Minutes)

Apr 16 •

How Halo Scaled to 11.6 Million Users Using the Saga Design Pattern 🎮

#51: Break Into Saga Design Pattern (4 Minutes)

Jul 4, 2024 •

How Load Balancing Algorithms Really Work ⭐

#72: Break Into Load Balancing Algorithms (3 Minutes)

May 19 •

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