Scaling and Performance Tuning in RDS
Learn how to scale Amazon RDS instances vertically and horizontally, monitor performance, and tune your databases for production workloads.
Why Scaling Matters
As your application grows, a single RDS instance may struggle to keep up with traffic. Scaling ensures your database stays responsive under load.
There are two broad strategies:
- Vertical scaling — make the instance bigger (more CPU/RAM)
- Horizontal scaling — spread reads across multiple instances
Vertical Scaling (Instance Class)
Vertical scaling means changing the DB instance class, for example moving from db.t3.medium to db.m6g.large.
RDS applies the change during a maintenance window or immediately, usually with a short restart.
aws rds modify-db-instance \
--db-instance-identifier mydb \
--db-instance-class db.m6g.large \
--apply-immediatelyAll lessons in this course
- Introduction to Amazon RDS
- Launching and Connecting to RDS
- RDS Backups and High Availability
- Scaling and Performance Tuning in RDS