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System Observability: Logging, Metrics & Tracing (ELK + OpenTelemetry) · Lesson

Elasticsearch Query Language (DSL)

Dive into the powerful Elasticsearch Query DSL for complex data retrieval and aggregation. Learn to craft advanced search queries.

Unlocking Elasticsearch Query Power

Welcome to the world of Elasticsearch Query DSL! DSL stands for Domain Specific Language. It's the powerful, flexible way to search and analyze data in Elasticsearch.

Instead of simple keywords, DSL lets you build complex queries using a JSON-based structure. This gives you fine-grained control over how your data is found and processed.

Basic Text Search: Match Query

The match query is your go-to for full-text searches. It analyzes the search text and the field content, making it great for finding relevant documents even with slight variations.

Here's how to find products containing the word 'laptop':

{
  "query": {
    "match": {
      "product_name": "laptop"
    }
  }
}

All lessons in this course

  1. Elasticsearch Query Language (DSL)
  2. Logstash Filters and Pipelines
  3. Kibana Discover and Lens
  4. Index Lifecycle Management (ILM)
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