Name: Taming Your Query Latency - Jason Hinch, Atlassian
Start: 2025-06-03T13:40:00+0530
End: 2025-06-03T14:20:00+0530

3-4 June, 2025
Bengaluru, India
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Note: The schedule is subject to change.

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IMPORTANT NOTE: Timing of sessions and room locations are subject to change.

Tuesday June 3, 2025 1:40pm - 2:20pm IST

Ceres

Struggling to tame the latency of your OpenSearch query? Atlassian was facing the exact problem with a query which had grown organically over a number of years of relevance improvements. Learn how they dove into the internals of OpenSearch to discover how their query worked, reducing their query latency by 70% in the process.

This session will cover:

* Techniques for identifying problem areas
* Shard topology
* Conjunctive and disjunctive boolean queries and how they impact latency
* track_total_hits, how it works and subtleties of when it doesn't
* Concurrent segment search
* Joins, when denormalisation is faster and when it isn't
* Index sorting
* initial query scoring vs rescoring
* Cross field match vs copy_to
* Parallel recall paths using hybrid queries or multi-search
* Query cache vs pre-computing
* LTR plugin, feature logging and ranking and impact on latency

Speakers

Jason Hinch

Senior Principal Software Engineer, Atlassian

Jason has been working at Atlassian for the past 15 years across a number of products and platforms. Most recently he has been the lead engineer within Search Platform, upleveling it to deliver world class relevance search to Atlassian's Cloud products.

Tuesday June 3, 2025 1:40pm - 2:20pm IST
Ceres

OpenSearchCon India 2025

Jason Hinch

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