Amazon OpenSearch Serverless Adds Zstandard Compression
🗜️ Amazon OpenSearch Serverless now supports Zstandard (zstd) codecs for index storage, giving customers a choice between the default LZ4 and the new zstd or zstd_no_dict modes. Zstandard can reduce index size by up to 32% compared with LZ4 and lets you tune compression levels to balance storage savings against indexing throughput and query latency. Lower compression levels (for example, level 1) deliver meaningful space savings with minimal performance impact, while higher levels (for example, level 6) maximize compression at the cost of slower indexing. The feature is available today in all Regions where OpenSearch Serverless is supported and can be configured in index settings at creation time.
