Weekly Digest

The digest that goes out every Monday

Weekly Digest
Weekly DigestWeekly Digest
🍔🧠 Redis + WebSockets: Canva's Real-Time Mouse Pointer Sharing Architecture

🍔🧠 Redis + WebSockets: Canva's Real-Time Mouse Pointer Sharing Architecture

PLUS: WebSockets 101 🔥, Scaling 1M Checkboxes 📚, The Tech Promotion Algorithm ⚡

Alex Zajac
Alex Zajac
Weekly DigestWeekly Digest
🍔🧠 How This App Survived 10K Requests Per Second

🍔🧠 How This App Survived 10K Requests Per Second

PLUS: RIP VSCode 😲, SparkSQL 101 📚, How to Scale to 100M Users 🔥

Alex Zajac
Alex Zajac
Weekly DigestWeekly Digest
🍔🧠 How Levels.fyi Used Google Sheets to Scale to Millions

🍔🧠 How Levels.fyi Used Google Sheets to Scale to Millions

PLUS: RIP Midjourney 🔥, Free Git Roadmap 📚, Message Queues 101 ⚡

Alex Zajac
Alex Zajac
Weekly DigestWeekly Digest
🍔🧠 How Lyft Implemented Real-Time Geospatial Querying

🍔🧠 How Lyft Implemented Real-Time Geospatial Querying

PLUS: Amazon + Tiktok 🤝, Chaos Engineering from Netflix 📚, ElasticSearch vs PostGreSQL ⚡

Alex Zajac
Alex Zajac
Weekly DigestWeekly Digest
🍔🧠 A Deep Dive into Notion's SharedWorker Architecture for Caching

🍔🧠 A Deep Dive into Notion's SharedWorker Architecture for Caching

PLUS: Instagram Did What!? 🫢, Distributed Systems Learning Guide 📚, How To Get Promoted Strategically 📈

Alex Zajac
Alex Zajac
Weekly DigestWeekly Digest
🍔🧠 Scaling Caching: Meta's Secret to 10 Nines of Cache Consistency

🍔🧠 Scaling Caching: Meta's Secret to 10 Nines of Cache Consistency

PLUS: What Really Happened With Crowdstrike 🤫, 15 Patterns to Crush Leetcode 💻, LLM-Powered Knowledge Curation System 🤖

Alex Zajac
Alex Zajac
Weekly DigestWeekly Digest
🍔🧠 This is How Booking Scaled to 250M Reviews per Year

🍔🧠 This is How Booking Scaled to 250M Reviews per Year

PLUS: Samsung's New Device 🫢, LLD Interview Blueprint 🟦, Free Programming Books 📚

Alex Zajac
Alex Zajac
Weekly DigestWeekly Digest
🍔🧠 Bye Bye JavaScript: Google Sheet's New Language

🍔🧠 Bye Bye JavaScript: Google Sheet's New Language

PLUS: Amazon's ChatGPT 🤖, Figma AI Changes Everything ✨, Promotion 101 From a VP 🫴🏻

Alex Zajac
Alex Zajac
Weekly DigestWeekly Digest
🍔🧠 GitHub Push: What Happens Behind the Scenes

🍔🧠 GitHub Push: What Happens Behind the Scenes

PLUS: Apple Intelligence Summary 🗣️, Instagram's secret 2.5B user scaling 📸, developer roadmaps unlocked 🗺️

Alex Zajac
Alex Zajac
Weekly DigestWeekly Digest
🍔🧠 This is How Youtube Serves 2.49 Billions Users

🍔🧠 This is How Youtube Serves 2.49 Billions Users

PLUS: Database design for Google Calendar 📆, All ML algorithms 🤖, and Holographic displays from Looking Glass 🔮

Alex Zajac
Alex Zajac
Weekly DigestWeekly Digest
🍔🧠 Payments 101: Stripe's Protocol

🍔🧠 Payments 101: Stripe's Protocol

PLUS: Apple's M4 chip powers AI 🤖, Database indexes 101 💾, Crawl websites into clean markdown 📄

Alex Zajac
Alex Zajac