From the course: AWS Certified Advanced Networking - Specialty (ANS-C01) Cert Prep
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High-availability environment
From the course: AWS Certified Advanced Networking - Specialty (ANS-C01) Cert Prep
High-availability environment
- [Narrator] Let's talk through how we could design a highly available application environment on AWS. To start with, a important consideration is to have no single point of failure. This means having the ability to have automated monitoring. CloudWatch is a great example of this. Also, failure detection and failure mechanisms. This allows for the ability to handle both stateful and stateless components. Also, SPOF or single point of failure is commonly eliminated with an N+1 or 2N redundancy configuration where the N+1 is achieved via load balancing. This is done via an active-active node. For 2N, it's done via a active-standby configuration, and this also enables other capabilities, such as achieving HA through load balance clusters or assuming an active standby pair. A few other considerations to be aware of are that when you are designing a HA system, you need to correctly instrument the system so you know what it is that the system is doing under load. Also, it's important to…
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