03 - EC2 High Availability and Scalability

We’ll touch here the basics of load balancers and auto-scaling groups but from the SysOps perspective.

This note is broken down into these sections:

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HIGH AVAILABILITY AND SCALABILITY

SCALABILITY This means your system or application can handle greater loads by adapting. Scalability is linked with High Availability but they are different.

There are two kinds of scalability:

1. Vertical Scalability - increasing or decreasing the size of instance.
2. Horizontal Scalability - increase or decrease the number of instances.