Key metrics for Elasticsearch performance monitoring
Elasticsearch is a highly scalable, distributed, open-source RESTful search and analytics engine that offers log analytics, real-time application monitoring, click stream analytics, and more. Elasticsearch stores and retrieves data structures in real time. It has multi-tenant capabilities with an HTTP web interface, presents data in the form of structured JSON documents, makes full-text search accessible via RESTful API, and maintains web clients for languages like PHP, Ruby, .Net, and Java.