Database Replication: Ensuring High Availability & Fault Tolerance | Backend Engineering 101

In this video, we explore Database Replication, a critical technique used to improve data availability, fault tolerance, and performance in distributed systems. Whether you're preparing for backend interviews or building scalable applications, this video will break down database replication in a simple and engaging way! 🚀 Here’s what you'll learn: ✅ What is Database Replication? Creating and maintaining copies of a database across multiple servers. ✅ Why Replicate Databases? Ensuring high availability, disaster recovery, and load balancing. ✅ Types of Database Replication: Master-Slave Replication: One primary database updates multiple secondary databases. Master-Master Replication: Multiple databases can read and write updates. Logical vs. Physical Replication: How data is transferred at the logical (SQL statements) or physical (binary) level. Synchronous vs. Asynchronous Replication: Trade-offs between consistency and performance. ✅ Real-world analogy: Comparing Database Replication to backing up files on multiple cloud servers to prevent data loss. ☁️💾 ✅ Replication in SQL & NoSQL Databases: How MySQL, PostgreSQL, MongoDB, and Cassandra handle replication. ✅ Challenges in Replication: Latency, data consistency issues, and conflict resolution in multi-master setups. ✅ How big tech companies like Google, Amazon, and Facebook use Database Replication to handle millions of users. By the end of this video, you’ll have a solid understanding of Database Replication, how it enhances database reliability, and how it’s used in large-scale systems. 🌍📊 Who is this video for? Perfect for college students, freshers, and anyone new to backend development who wants to learn about database scalability and fault tolerance. 📚 Follow us for more fun, knowledge, and resources: 💌 Telegram - https://telegram.me/PrepTrain 📷 Instagram - https://instagram.com/saheb_preptrain ❤️ YouTube - youtube.com/@Saheb_PrepTrain 🧑‍💼 LinkedIn - https://linkedin.com/in/kumar-saheb 💬 X - https://x.com/Saheb_PrepTrain Hashtags: #BackendEngineering #DatabaseReplication #HighAvailability #FaultTolerance #SoftwareDevelopment #Programming #TechForFreshers #Scalability #BigData #WebDevelopment 📢 Don’t forget to subscribe! Hit the bell icon to stay updated with each new video. 🎉