Auto Scaling

COM

PUTE

TIME

1- UN PREDICTABLE BURSTS

COM

PUTE

TIME

2- PREDICTABLE BURSTS

Load Scenarios

Business Scenario-01

You are launching a new application

You can procure infrastructure lavishly or conservatively

You are unsure if the users will like the application.?

Business Scenario-02

YOU START A NEW BUSINESS

AFTER SOME TIME

You start procuring hardware to meet the requirements

DEMAND DIPS AFTER INITIAL SUCCESS

KICKS OF

? What will you do with the investment?

Business Scenario-03

SERVERS SERVERS

PEAK LOAD REGULAR LOAD

Under and Over provisioning

INFR

ASTR

UCT

URE

TIME

HARDWARE SUPPORT

PLANNED LOAD

ACTUAL LOAD

UNDER PROVISION

OVER PROVISION

A cloud computing service feature that automatically adds or removes compute resources depending upon actual usage

Auto Scaling

AWS Auto scaling

CAPA

CITY

TIME

AUTOMATES EC2 TO

Scale outScale down

ACTUAL DEMAND

VIRTUALIZED INFRASTRUCTURE

We can closely align our infrastructure with our load requirement and save costs.

Do not have to worry about

capacity planning

Minimal manual intervention

No time wastage on hardware

procurement

You can scale-down immediately after the

need is over

Zero CapEx investment

Start small and upscale within minutes

With Auto Scaling

Scale upto 100 instances – pretty

huge

How Auto Scaling Works

CLOUD WATCH

SERVER 1

SERVER 2

SERVER 3

SERVER 4

SERVER

LOAD BALANCE

R

Auto Scale

AUTO SCALE

+ -POLICIES

Laun

ch N

ew

Serv

er

Repo

rt Se

rver

Load

TO ADD RESOURCE

TO Remove ARESOURCE

Term

inat

e Se

rver

Monitor Server Load

Application server-1 Application server-2Users

Points to Remember before Scaling out / down

Ensure that following resources are not lost during scale-down

Log files

Data files

User Sessions

Things To Remember

Cannot be used to scale an Amazon RDS instance

Cannot be done across multiple AWS Regions

01

0203

04

Cannot Differentiate between valid and malicious traffic

Cannot be used to launch different configuration servers

Snapshots From The Evening

Snapshots From The Evening

Snapshots From The Evening

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