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OpenSearch Project Blog

Your source for OpenSearch updates, community news, and technical insights.

Community

Announcing OpenSearchCon Europe 2025

January 9, 2025
We are delighted to announce OpenSearchCon Europe 2025, the premier event for the OpenSearch community in Europe! Mark your calendars for 30 April and 1 May as we bring together...
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Found 320 posts


Announcements

OpenSearch version 3.0: New features, breaking changes from Apache Lucene 10, and what to expect

April 25, 2025
Three years after the launch of 2.0, OpenSearch has taken the launch of Apache Lucene 10 as a chance to develop a new major version. Why the new development? Well,...
Releases

Announcing OpenSearch Data Prepper 2.11: Supercharged OpenTelemetry and even more sources

April 24, 2025
Authors Krishna Kondaka Krishna is a senior software engineer working on observability in OpenSearch at Amazon Web Services. He is also a contributor to the Data Prepper project. Prior to...
Technical

Navigating pagination in hybrid queries with the pagination_depth parameter

April 23, 2025
Authors Varun Jain Varun Jain is a Software Development Engineer working on the OpenSearch Project and Amazon OpenSearch Service. He primarily works on distributed systems and is an active contributor...
Technical

What’s new in OpenSearch Query Insights: Advanced grouping, dashboards, and historical analysis

April 22, 2025
OpenSearch Query Insights gives you essential visibility into how search queries perform, helping you understand how queries run and how they use cluster resources. Since introducing Query Insights, we’ve aimed...
Technical

Building effective hybrid search in OpenSearch: Techniques and best practices

April 17, 2025
OpenSearch provides a wide range of capabilities to support modern search needs, including traditional keyword-based techniques like lexical search using BM25 and more advanced methods like semantic and hybrid search....
Technical

A practical guide to selecting HNSW hyperparameters

April 10, 2025
Vector search plays a crucial role in many machine learning (ML) and data science pipelines. In the context of large language models (LLMs), vector search powers retrieval-augmented generation (RAG), a technique...
Technical

Boost OpenSearch vector search performance with Intel AVX-512

April 8, 2025
Introduced in OpenSearch 2.18, Intel Advanced Vector Extensions 512 (Intel AVX-512) is a set of new instructions that can accelerate vector workload performance. Vector search benchmarks using OpenSearch Benchmark showed...
Community

Generative AI: OpenSearch’s journey as an open-source search engine

March 26, 2025
The rise of generative AI has transformed search technology, evolving it from simple keyword-based retrieval to intelligent, multimodal search experiences powered by deep learning. In this keynote address at the Linux Foundation Member...
Technical

OpenSearch as a SIEM Solution

March 20, 2025
OpenSearch is a scalable open-source search and analytics platform that can serve as the core of a Security Information and Event Management (SIEM) system. OpenSearch can centralize logs from diverse...
Technical

GPU-accelerated vector search in OpenSearch: A new frontier

March 18, 2025
OpenSearch’s adoption as a vector database has grown significantly with the rise of generative AI applications. Vector search workloads are scaling from millions to billions of vectors, making traditional CPU-based indexing both...
Community Technical

Solution Provider Highlight – Enhancing anomaly detection in Amazon OpenSearch Service: A customer success story

March 7, 2025
As organizations increasingly rely on cloud services, monitoring and detecting anomalies in system behavior has become crucial for maintaining reliable operations. In this post, we’ll explore recent improvements to the...
Community

Tracking the evolution of OpenSearch performance

March 6, 2025
Trail of Bits, an independent research and consulting company, recently completed a detailed analysis of OpenSearch performance. Read the blog post and detailed analysis to learn about key performance metrics for the Big5 workload! OpenSearch is...
Technical

Efficient large-scale filtering with bitmap filtering in OpenSearch

February 25, 2025
OpenSearch is a powerful open-source search and analytics engine that enables you to efficiently search and filter large datasets. A common search pattern involves filtering documents based on whether a...
Technical

Reduce costs with disk-based vector search

February 19, 2025
Vector search has gained significant attention in the area of information retrieval thanks to advances in natural language embedding models. These models map domain-specific data into a vector space, where...
Community

From chaos to clarity: Revolutionizing OpenSearch clients and documentation using a unified API specification

February 13, 2025
In February 2024, we decided to revamp the OpenSearch API Specification repository by adopting the OpenAPI Specification. While this change offered significant benefits, we encountered some challenges during implementation. Most...
Technical

Introducing reciprocal rank fusion for hybrid search

February 12, 2025
OpenSearch 2.19 introduces reciprocal rank fusion (RRF), a new feature in the Neural Search plugin that enhances hybrid search. RRF merges ranked results from multiple query sources, such as neural...
Releases

Explore OpenSearch 2.19

February 11, 2025
The latest version of OpenSearch expands capabilities for search and observability use cases, boosts performance and ease of use, and introduces an array of advancements for machine learning (ML) and...
Technical

Enhancing OpenSearch anomaly detection: Reducing false positives through algorithmic improvements

February 5, 2025
The OpenSearch Anomaly Detection plugin is powered by the Random Cut Forest (RCF) algorithm. Although RCF is a powerful algorithm, false alarms reduce its practical value because users must spend time verifying...
Technical

Instant DeepSeek: One-click activation with OpenSearch

January 31, 2025
In an earlier blog post, we introduced OpenSearch’s support for the DeepSeek large language model (LLM). This post focuses on simplifying DeepSeek LLM integration using the OpenSearch Flow Framework plugin. With...
Technical

Zero to RAG: A quick OpenSearch vector database and DeepSeek integration guide

January 30, 2025
OpenSearch now integrates with DeepSeek, offering powerful and cost-effective AI capabilities. In this blog post, we’ll guide you through setting up a retrieval-augmented generation (RAG) system using OpenSearch and the DeepSeek...
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