elasticsearch/docs/java-rest/overview.asciidoc

== Overview

Official low-level client for Elasticsearch. Allows to communicate with an
Elasticsearch cluster through http. Compatible with all elasticsearch versions.

=== Features

The low-level client's features include:

* minimal dependencies

* load balancing across all available nodes

* failover in case of node failures and upon specific response codes

* failed connection penalization (whether a failed node is retried depends on
 how many consecutive times it failed; the more failed attempts the longer the
 client will wait before trying that same node again)

* persistent connections

* trace logging of requests and responses

* optional automatic <<sniffer,discovery of cluster nodes>>


=== License

Copyright 2013-2016 Elasticsearch

Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at

    http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.