Amazon RDS is a managed relational database
service that makes it easier to set up, operate, and scale a
relational database in the cloud. One of the common
questions that we get is “What is Multi-AZ and how it’s different
from Read Replica, do I need both?”. I have tried to answer
this question in this blog post and it depends on your
application needs. Are you looking for High Availability (HA),
read scalability … or both?
Before we go to into detail, let me explain two common terms used
with Amazon AWS.
Region – an AWS region is a separate
geographical area like US East (N. Virginia), Asia Pacific
(Mumbai), EU (London) etc. Each AWS Region has multiple, isolated
locations known as Availability Zones.
Availability Zone (AZ) – AZ is simply one or
more data …[Read more]