Java

Elasticsearch

elasticsearch

Java Tutorial

Java Tutorial or Core Java Tutorial or Java Programming Tutorial is a widely used robust technology. Let’s start learning Java from basic questions like what is Java tutorial, Core Java, where it is used, what type of applications are created in Java, why use java and Java platforms etc. Our Java source code helps you to learn Java with easy and simple examples.

What is Java ?

Java is a programming language and a platform.

Java is a high level, robust, secured and object-oriented programming language.

Platform: Any hardware or software environment in which a program runs, is known as a platform. Since Java has its own runtime environment (JRE) and API, it is called platform.

elasticsearch

A Distributed RESTful Search Engine

https://www.elastic.co/products/elasticsearch

Elasticsearch is a distributed RESTful search engine built for the cloud. Features include:

  • Distributed and Highly Available Search Engine.
    • Each index is fully sharded with a configurable number of shards.
    • Each shard can have one or more replicas.
    • Read / Search operations performed on any of the replica shards.
  • Multi Tenant.
    • Support for more than one index.
    • Index level configuration (number of shards, index storage, …).
  • Various set of APIs
    • HTTP RESTful API
    • Native Java API.
    • All APIs perform automatic node operation rerouting.
  • Document oriented
    • No need for upfront schema definition.
    • Schema can be defined for customization of the indexing process.
  • Reliable, Asynchronous Write Behind for long term persistency.
  • (Near) Real Time Search.
  • Built on top of Lucene
    • Each shard is a fully functional Lucene index
    • All the power of Lucene easily exposed through simple configuration / plugins.
  • Per operation consistency
    • Single document level operations are atomic, consistent, isolated and durable.
  • Open Source under the Apache License, version 2 (“ALv2”)

Getting Started

First of all, DON’T PANIC. It will take 5 minutes to get the gist of what Elasticsearch is all about.

Requirements

You need to have a recent version of Java installed. See the Setup page for more information.

Installation

  • Download and unzip the Elasticsearch official distribution.
  • Run bin/elasticsearch on unix, or bin\elasticsearch.bat on windows.
  • Run curl -X GET http://localhost:9200/.
  • Start more servers …

From: https://github.com/elastic/elasticsearch

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