AWS Databases Explained: RDS, Aurora, DynamoDB, ElastiCache & DMS (Module 6)

Learn AWS databases from the ground up. In this module we compare relational and NoSQL databases, see why managed databases save you weekends, and work through Amazon RDS, Multi-AZ and read replicas, Amazon Aurora, Amazon DynamoDB, caching with Amazon ElastiCache, and moving existing databases into AWS with the Database Migration Service. Every concept comes with a worked example, quick checks, and three real-world scenarios solved on screen. This is Module 6 of the "AWS Cloud Fundamentals: Complete Beginner Course" playlist. What you'll learn • Relational vs NoSQL databases, and how to choose • Why a managed database beats running your own on EC2 • Amazon RDS: Multi-AZ for availability, read replicas for scale • Amazon Aurora and what makes it different • Amazon DynamoDB: keys, tables, and capacity modes • Caching with Amazon ElastiCache and the lazy loading pattern • Migrating databases with AWS DMS, including Oracle to Aurora PostgreSQL Scenarios solved in this video 1. MySQL on a single EC2 instance: weekend patching, an AZ outage, and slow checkouts 2. Database CPU at 95% from product pages that rarely change 3. Moving a 2 TB MySQL database to Aurora with less than 15 minutes of downtime Chapters 0:00 Introduction 0:34 Relational or NoSQL? 1:11 Why a managed database? 1:49 Amazon RDS 2:37 Multi-AZ and read replicas 3:31 Example: an online shop database 4:14 Amazon Aurora 4:56 Quick check: Multi-AZ or read replica? 5:34 Scenario 1 6:24 Scenario 1: answer 6:59 Amazon DynamoDB 7:36 Example: an Orders table 8:22 DynamoDB features 9:07 Quick check: RDS or DynamoDB? 9:56 Amazon ElastiCache 10:38 Example: lazy loading 11:28 Scenario 2 12:18 Scenario 2: answer 12:58 AWS Database Migration Service 13:50 Example: Oracle to Aurora PostgreSQL 14:38 Scenario 3 15:27 Scenario 3: answer 16:09 Recap and best practices All facts are based on official AWS documentation. Names and numbers in the examples are placeholders. Credits AWS Architecture Icons © Amazon Web Services. AWS and the AWS logo are trademarks of Amazon.com, Inc. or its affiliates. Line icons: Tabler Icons (MIT). Fonts: Caveat and Inter (SIL Open Font License). Narration voice generated with Chatterbox by Resemble AI (MIT). #AWS #AmazonRDS #DynamoDB #CloudComputing #AWSCertification