Amazon OpenSearch Serverless now supports Zstandard (zstd) codec for index compression
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This article announces Zstandard (zstd) codec support for index compression in Amazon OpenSearch Serverless, enabling better storage cost optimization.
- Zstandard compression reduces index size by up to 32% versus default LZ4 codec
- Two compression modes available: zstd and zstd_no_dict
- Tunable compression levels balance storage savings against indexing/query performance
- Ideal for log analytics, observability, and time-series workloads
- Available in all AWS regions supporting Amazon OpenSearch Serverless
- Configure codecs in index settings at creation time
Zstandard codec support helps reduce managed storage costs for data-intensive workloads by offering flexible compression options.
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