Category: Latest Technologies

These APIs are responsible for managing all the aspects of index like settings, aliases, mappings, index templates. Create Index This API helps you to create index. Index can be created automatically when a user is passing JSON objects to any index or it can be created before that. To create an index, you just need…

Application Programming Interface (API) in web is a group of function calls or other programming instructions to access the software component in that particular web application. For example, Facebook API helps a developer to create applications by accessing data or other functionalities from Facebook; it can be date of birth or status update. Elasticsearch provides…

Elasticsearch provides single document APIs and multi-document APIs, where the API call is targeting single document and multiple documents respectively. Index API It helps to add or updates the JSON document in an index when a request is made to that respective index with specific mapping. For example, the below request will add the JSON…

This API is used to search content in Elasticsearch. Either a user can search by sending a get request with query string as a parameter or a query in the message body of post request. Mainly all the search APIS are multi-index, multi-type. Multi-Index Elasticsearch allows us to search for the documents present in all…

This framework collects all the data selected by the search query. This framework consists of many building blocks, which help in building complex summaries of the data. The basic structure of aggregation is presented below − “aggregations” : { “<aggregation_name>” : { “<aggregation_type>” : { <aggregation_body> } [,”meta” : { [<meta_data_body>] } ]? [,”aggregations” :…

In this section, we will add some index, mapping and data to Elasticsearch. This data will be used in the examples explained in this tutorial. Create Index PUT http://localhost:9200/schools Request Body It can contain index specific settings, but for now, it is empty for default settings. Response {“acknowledged”: true} (This means index is created) Create…

In any system or software, when we are upgrading to newer version, we need to follow a few steps to maintain the application settings, configurations, data and other things. These steps are required to make the application stable in new system or to maintain the integrity of data (prevent data from getting corrupt). The following…

Elasticsearch is a real-time distributed and open source full-text search and analytics engine. It is used in Single Page Application (SPA) projects. Elasticsearch is open source developed in Java and used by many big organizations around the world. It is licensed under the Apache license version 2.0. In this brief tutorial, we will be explaining…

Elasticsearch is an Apache Lucene-based search server. It was developed by Shay Banon and published in 2010. It is now maintained by Elasticsearch BV. Its latest version is 2.1.0. Elasticsearch is a real-time distributed and open source full-text search and analytics engine. It is accessible from RESTful web service interface and uses schema less JSON…

The steps for installation of Elasticsearch are as follows − Step 1 − Check the minimum version of your java in installed your computer, it should be java 7 or more updated version. You can check by doing the following − In Windows Operating System (OS) (using command prompt) − > java -version In UNIX…