Database Replication Explained | System Design Interview Basics

Relational databases have been around for more than 30 years. Effective Database replication patterns are one of the reasons why they did withstand the test of time so well. Today, we look into the iconic main-replica pattern and ask how does it work and even more importantly how does it scale? This video is part of my system design interview preparation series. 00:00 - Intro 00:36 - Why Replication Matters 02:04 - What is replication? 03:28 - A brief history of replication 03:46 - Main-replica pattern 06:08 - Replace a replica node 07:29 - Replace the main node 10:06 - Why scalability matters 11:10 - Scaling reads 11:52 - Scaling write requests 14:21 - Summary 🐦 Follow me on Twitter:   / hinsencamp   🙌 Our Big Tech Community on discord!   / discord   ✏️ Download FREE system component library for Excalidraw: https://bigtechcoach.gumroad.com/l/ex... ⭐️ Enrol to my 5.0-rated Course on System Design Interview Preparation: https://www.udemy.com/course/the-bigt... 🚀 Ace your system design interview! #systemDesignInterview #replication #SQLdatabase