Скачать или смотреть L22 : Statement vs WAL vs Logical vs Trigger-Based Replication in Distributed System

🚀 Welcome back to my System Design series!
In this video, we dive deep into Database Replication Methods—breaking down the four major types using real-world analogies like chefs and kitchens 🍽️ to make complex ideas simple and fun!

🔹 What You’ll Learn:
✅ What is replication in databases and why it matters
✅ Statement-based replication and its challenges
✅ WAL (Write-Ahead Logging) for byte-level precision
✅ Logical replication for flexibility and system upgrades
✅ Trigger-based replication for custom workflows and hybrid systems
✅ Real-world use cases from MySQL, PostgreSQL, Oracle, and modern cloud systems

📌 Timestamps:
00:00 – Intro: Why replication matters for modern databases
00:14 – Overview of the 4 replication types
00:29 – Quick recap: Statement-based replication
01:45 – WAL (Write-Ahead Logging) and how it works
03:28 – Logical replication: Summary-level syncing
04:43 – Trigger-based replication and custom use cases
06:23 – Real-world examples from MySQL, PostgreSQL, and cloud providers
07:42 – Why each method has its strengths
07:54 – Wrap-up and key takeaways

🛠️ Relevant for:
System Design Interviews • Backend Engineers • DBAs • Data Architects • Curious Developers

🔗 Additional Resources:
📖 MySQL Replication Docs: https://dev.mysql.com/doc/refman/8.0/...
📖 PostgreSQL WAL & Logical Replication: https://www.postgresql.org/docs/curre...

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