Honza Král

Honza Král

CTO, Sidecar

A veteran Elastician from the early days of the community, Honza now brings that deep expertise to clients through his consultancy, Sidecar.

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Articles by Honza Král
Agentic AI search with deterministic guardrails in Elasticsearch for safe query execution
Elasticsearch Labs

Agentic AI search with deterministic guardrails in Elasticsearch for safe query execution

Agentic AI search systems often fail when LLMs generate queries directly. Learn how deterministic guardrails and a control plane architecture enable safe, reliable, and governed query execution with Elasticsearch.

Alexander Marquardt
Ecommerce search optimization using margin and popularity boosting in Elasticsearch
Elasticsearch Labs

Ecommerce search optimization using margin and popularity boosting in Elasticsearch

Learn how to optimize ecommerce search using margin and popularity boosting. This blog explains how a governed control plane treats economic optimization in Elasticsearch.

Alexander Marquardt
Personalizing ecommerce search: Integrating purchase history and user cohorts
Elasticsearch Labs

Personalizing ecommerce search: Integrating purchase history and user cohorts

Learn how to create a personalized ecommerce search experience in Elasticsearch without breaking governance. This post explains how to boost products a shopper has purchased before and how to activate cohort-specific policies based on user profiles.

Alexander Marquardt
Multi-tier search with Elastic for ecommerce search governance: Fixing poor recall
Elasticsearch Labs

Multi-tier search with Elastic for ecommerce search governance: Fixing poor recall

Learn how to build a multi-tier retrieval strategy used to execute ecommerce governed search plans and improve recall management. We'll cover how to orchestrate semantic matching while maintaining stable results, facets, and pagination.

Alexander Marquardt
Elasticsearch percolator for ecommerce search governance: translating ambiguous queries into controlled retrieval strategies
Elasticsearch Labs

Elasticsearch percolator for ecommerce search governance: translating ambiguous queries into controlled retrieval strategies

Learn how to use the Elasticsearch percolator to implement search governance. In this blog, we outline the patterns needed to create a governed policy engine in production and create a controlled retrieval strategy.

Alexander Marquardt
Building a control plane to govern ecommerce search
Elasticsearch Labs

Building a control plane to govern ecommerce search

How to build a governed control plane for ecommerce that composes conflicting search policies into a single execution plan (without code changes).

Alexander Marquardt
Accelerating merchandising improvements with a governed control plane
Elasticsearch Labs

Accelerating merchandising improvements with a governed control plane

Search behavior changes shouldn't require an engineering ticket. Learn how a governed control plane lets business teams update search policies in hours, without deployments, without risk.

Alexander Marquardt
Why ecommerce search needs governance
Elasticsearch Labs

Why ecommerce search needs governance

Learn why ecommerce search falls short without governance and how a control layer ensures predictable and intent-driven results, thus improving retrieval.

Alexander Marquardt