CAT API
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What is CAT API?
The CAT API in Elasticsearch provides a simple, human-readable way to access cluster-level information using a command-line interface or a RESTful API. It returns data in a tabular format, making it easy to understand and interpret the status, health, and performance metrics of your Elasticsearch cluster. This API is primarily used for monitoring and troubleshooting purposes.
Free resources to learn CAT API
- Official docsCompact and aligned text (CAT)
- Official docsGet the cluster health status
- ArticleMastering the Elasticsearch Cat API for Efficient Cluster Management
- ArticleElasticsearch - Cat APIs
More in stage 7: Search Analyzer
- Search Analyzer
- Doc values
- fielddata
- The Inverted Index
- The Analyze API
- Standard Analyzer
- Custom Analyzers
- Value Count
- Avg / Sum / Min / Max
- Cardinality
- Stats / Extended Stats
- Terms
- Range / Date Range
- Histogram
- Filter Aggregations
- Pivot
- Latest
- Transform API
- Nested Aggregations
- Pipeline Aggregations
- Understanding Similarity
- BM25 algorithm
- Segment Merging
- Cluster Monitoring
- Cross-cluster Replication
- Autoscaling
- Boosting Queries
- Function Score Query
- Match Phrase Query
- Synonyms Graph
- ILM
- Rollover Policies
- Data Tiers
- Vector Search
- Semantic Search
- Hybrid Search
- Snapshots & restore
- SLM
- Authentication
- Roles & Users
- API Keys
CAT API: common questions
Can I learn CAT API in Hindi?
This lesson is written in English. Once you sign in, open it in the interactive course and ask the AI tutor to explain CAT API in Hindi or Hinglish. The tutor answers from this lesson’s own text, so it stays on the syllabus, and it runs on your own Google, OpenAI or Anthropic key.
Is this CAT API tutorial for beginners?
It is lesson 94 of 113 in the free Elasticsearch roadmap, in stage 7, Search Analyzer. If you are new to Elasticsearch, start from stage 1 and come back here in order; if you already know the earlier stages, this lesson stands on its own.