Amazon OpenSearch Service Under the Hood : OpenSearch Optimized Instances(OR1)
Big Data Blog
This article discusses the new OpenSearch Optimized Instance family (OR1) introduced by Amazon OpenSearch Service, which delivers up to 30% better price-performance compared to existing memory-optimized instances. OR1 instances use Amazon S3 for data storage, providing 11 9s of durability.
Specifically, the article covers:
- How OR1 instances work with a redesigned data flow involving Amazon S3 for high indexing throughput and durability
- How the new physical replication strategy boosts indexing throughput by indexing data only on the primary copy and using Amazon S3 for replicating to other copies
- Challenges in achieving high durability, such as synchronously writing uncommitted operations to Amazon S3 and maintaining data integrity and correctness
- How OR1 instances hydrate copies directly from Amazon S3 for efficient recovery and how snapshots work with the new architecture
- The role of OR1 instances as a foundation for future OpenSearch innovations like separating compute and storage layers
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