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Building the future of OpenSearch together

Sep 16 2024 • community-updates

As announced today, the OpenSearch Project is now part of the newly formed OpenSearch Software Foundation, a community-driven initiative under the Linux Foundation. This marks a major milestone in the history of the OpenSearch Project, and we couldn't be more excited to share our thoughts on what this means to...

Diving deep into distributed microservices with OpenSearch and OpenTelemetry

Aug 12, 2025 • technical-posts, blog

In modern distributed systems, understanding the interactions between microservices is crucial for identifying performance bottlenecks and diagnosing failures. In this blog post, we’ll demonstrate the new features introduced in the...

Transforming bucket aggregations: Our journey to 100x performance improvement

Aug 05, 2025 • technical-posts

OpenSearch is widely used for data analytics, especially when working with time-series data. A core feature of time-series analysis is the date histogram aggregation, which groups documents by date or...

Performance optimizations for the OpenSearch security layer

Jul 30, 2025 • technical-posts, blog

When discussing performance optimizations in OpenSearch, we usually focus on the processing of actual data: we look at algorithms and data structures to improve the amount of time a query...

OpenSearch User Groups: Building a Global Community

Jul 18, 2025 • community, blog

The State of OpenSearch User Groups: Building a Global Community

OpenSearch Approximation Framework

Jul 14, 2025 • technical-posts, blog

If you’re an OpenSearch user, you probably often run OpenSearch queries to retrieve the most recent logs, metrics, or events—for example, fetching the latest 100 error logs from the past...

The new semantic field: Simplifying semantic search in OpenSearch

Jul 11, 2025 • technical-posts

Semantic search improves result relevance by using a machine learning (ML) model to generate dense or sparse vector embeddings from unstructured text. Traditionally, enabling semantic search has required several manual...

Advanced usage of the semantic field in OpenSearch

Jul 10, 2025 • technical-posts

In our previous blog post, we introduced the new semantic field in OpenSearch and went over its basic setup. In this post, we’ll explore advanced configurations of the semantic field,...

Making ingestion smarter: System ingest pipelines in OpenSearch

Jul 08, 2025 • technical-posts

OpenSearch 3.1 introduces the system ingest pipeline, a new capability designed specifically for plugin developers. It lets you automatically process documents during ingestion by defining system ingest processors that run...

Introducing semantic highlighting in OpenSearch

Jul 07, 2025 • technical-post

OpenSearch 3.0 introduces semantic highlighting, an AI-powered feature that identifies and returns the most relevant passages in a retrieved document. In this post, we'll break down the science behind the...

Building a multimodal search engine in OpenSearch

Jul 07, 2025 • technical-post

Go beyond keyword search and learn how to build a multimodal search engine in OpenSearch. This post will show you how to implement one in OpenSearch using the ML inference...

Reducing hybrid query latency in OpenSearch 3.1 with efficient score collection

Jun 27, 2025 • technical-posts, blog

Hybrid queries combine the precision of traditional lexical search with the semantic power of vector search. In OpenSearch 3.1, we delivered significant latency reductions for hybrid queries by redesigning how...

Introduction to ML inference processors in OpenSearch: Review summarization and semantic search

Jun 27, 2025 • technical-posts

In an era of AI revolutionizing how we interact with information, traditional keyword-based search has become increasingly insufficient. Users expect search engines to understand context, interpret natural language, and deliver...

Announcing OpenSearch Data Prepper 2.12: Additional source and sinks for your data ingestion needs

Jun 26, 2025 • releases

Data Prepper 2.12.0 offers an improved OTel source and two new sinks for improved data ingestion as well as additional features and improvements.

Redline testing now available in OpenSearch Benchmark

Jun 23, 2025 • technical-posts

Redline testing now available in OpenSearch Benchmark

Neural sparse models are now available in Hugging Face Sentence Transformers

Jun 11, 2025 • technical-posts

OpenSearch’s neural sparse search transforms text into sparse token-weight pairs using transformer models, combining semantic search capabilities with efficient inverted indexing. This approach delivers high retrieval accuracy with low latency...