From the course: AWS: Cost and Performance Optimization
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Placement groups - Amazon Web Services (AWS) Tutorial
From the course: AWS: Cost and Performance Optimization
Placement groups
- [Instructor] Amazon EC2 has a feature called placement groups that allows you to influence the placement of instances on the underlying hardware to meet your workload requirements. By default, AWS will place your easy two instances in such a way that all if your instances are spread out across the underlying hardware to minimize correlated failures. But this can be controlled using placement groups. The benefits of using placement groups include low-latency, separation of the underlying hardware, and reduction in correlated failures. For example, large distributed and replicated workloads, such as Hadoop, Cassandra, CAFCA, et cetera, are commonly deployed across multiple availability zones to reduce correlated failures. While this deployment strategy provides high availability, it suffers from internal latency due to multi-zone deployment. With placement groups, you can influence your instances placement and have them…