Application logs and metrics are vital for any application development or maintenance process. They provide valuable information about the application's performance, errors, and user behavior, which can be used to identify and resolve issues quickly. However, managing and analyzing logs and metrics can be a daunting task, especially if the application generates a large volume of data. That's where Elasticsearch and Kibana come in.
Elasticsearch is a distributed, RESTful search and analytics engine that is designed to handle large volumes of data. It stores data in a document-oriented index, offering fast search and analytics capabilities. Kibana, on the other hand, is an open-source data visualization and exploration tool that allows users to interact with data stored in Elasticsearch.