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Blog 1 Apr 2025

How to Scale Elasticsearch Using Siren Federate

Author: Renaud Delbru
Author Renaud Delbru
How to Scale Elasticsearch Using Siren Federate

Scaling Elasticsearch for enterprise use cases can be challenging, especially when dealing with massive datasets, complex joins, and the need for real-time performance. At Siren, we’ve worked with organizations facing these exact challenges, and we’ve developed Siren Federate as a powerful Elasticsearch plugin to help overcome them. In this blog, I’ll walk you through how Siren Federate enables scalable relational search and graph search—helping businesses maximize their Elasticsearch deployments.

The Scaling Challenge in Elasticsearch

Elasticsearch is incredibly powerful, but it wasn’t originally designed for relational joins. Built-in join methods, such as parent-child or nested joins, shift complexity to index-time operations, creating challenges when datasets grow or more indices are involved. Organizations often struggle with:

Siren Federate, A Scalable Elasticsearch Join Technology

Siren Federate enhances Elasticsearch with advanced distributed join capabilities, enabling scalable data correlation without costly compromises. It addresses key limitations of traditional Elasticsearch joins, such as extensive denormalization, slow queries, expensive reindexing, and data consistency issues.

1. Real-time Relational Search Across Multiple Indices

With Siren Federate, you can query multiple indices in real-time, eliminating the need for extensive data merging or denormalization. Key benefits include:

2. Graph Search for Deep Investigations

Siren Federate combines powerful graph-based search capabilities with Elasticsearch’s advanced search capabilities, allowing analysts to explore multi-modal knowledge graphs intuitively and rapidly:

3. Optimizing Elasticsearch Cluster Performance

Scaling Elasticsearch requires more than just additional hardware. Siren Federate optimizes performance by:

Real-World Impact: Apollo’s Success Story

One of our customers, Apollo, faced significant challenges scaling Elasticsearch due to a growing enterprise user base. Their initial approach—what they called the “Fake Join”—failed to scale, leading to slow query times, incorrect results, and high operational costs.

Matt Curl
Chief Operating Officer at Apollo.io

This was such a beastly performance improvement. The impact on our customers was immediate. Our products are now faster. Customers can use Apollo products in even more precise ways to filter and target, allowing sales and marketing teams to have unparalleled results.

By implementing Siren Federate, Apollo:

Getting Started with Siren Federate

If you’re struggling to scale Elasticsearch and need a more powerful approach to relational search, Siren Federate can help. Here’s how you can get started:

  1. Evaluate your search architecture: Identify where joins and distributed search operations are causing bottlenecks.
  2. Install the Siren Federate plugin: Seamlessly integrate it into your Elasticsearch cluster.
  3. Optimize your queries: Use federated search techniques to reduce load and improve response times.
  4. Monitor and scale: Continuously measure performance improvements and adjust configurations as needed.

Scaling Elasticsearch for enterprise search and investigative applications requires innovative solutions. Siren Federate combines advanced Elasticsearch capabilities with powerful relational and graph search methods—unlocking new levels of performance, scalability, and efficiency.

If you’re looking to optimize your Elasticsearch deployment and overcome scaling challenges, Siren Federate is the solution you need. Get in touch today or take a look at a recent Use Case.

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