HA in AWS a quick overview

go to link HA AWS RS Overview (Presentation link)

buy generic Lyrica india AWS has many features to provide HA/DR.

Presentation attached delivers some ideas.

1 ) Use an ELB, Auto Scale, Cloud Watch integration at the Web HTTP Server and Web Application Server tiers.  Stateless data within these 2 tiers are perfect for the HA provided by ELB and Auto Scaling (Horizontal scaling).

2 ) For the DB and persistent stores, DB replication, active-passive node architectures and having a XFC or controller polling the active nodes is mandatory.

Other items to worry about:

Caching
Logging
Session State
Instance costs and Capacity
Replication, Read Only
Active-Passive relationships per node
AZ replication
EBS and DB Snapshots stored in S3

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