Achieve high availability in Amazon OpenSearch Multi-AZ with Standby enabled domains: A deep dive into failovers
Big Data Blog
The article provides a deep dive into how the Amazon OpenSearch Service achieves high availability using the Multi-AZ with Standby feature. It explains the underlying mechanisms that contribute to the service's reliability, simplicity, and fault tolerance.
Specifically, the article covers:
- Background on the Multi-AZ with Standby architecture, which deploys instances across three Availability Zones, with two active and one standby
- How search traffic routing and failover work to guarantee high availability, including the use of weighted round-robin for shard copy selection and fail-open mode for the standby zone during outages
- How write failover ensures high availability during write impairment by cutting off inter-zone replication traffic to the impacted zone, and the process of graceful write failover and zonal recovery
- Conclusion highlighting the benefits of Multi-AZ with Standby for achieving high availability and consistent performance for critical workloads
The AWS News Feed is currently looking for gold sponsors. If you want to support the AWS community and reach a large audience of AWS professionals, consider sponsoring the AWS News Feed.
Related articles
Feb 5
2024
2024
Improve application resiliency and performance with Multi-AZ Amazon FSx for OpenZFS
Jun 3
2026
2026
Amazon OpenSearch Service: Mechanisms to secure your domain
Dec 9
2024
2024
Using RDS Proxy with Amazon RDS Multi-AZ DB instance deployment to improve planned failover time
Jul 3
2025
2025
Enhance stability with dedicated cluster manager nodes using Amazon OpenSearch Service
The AWS News Feed is currently looking for silver sponsors. If you want to support the AWS community and reach a large audience of AWS professionals, consider sponsoring the AWS News Feed.