From 5725aa5dae25b9489421edb6931ee5c0f03e02e7 Mon Sep 17 00:00:00 2001
From: franck09 <francis_b16@hotmail.com>
Date: Wed, 9 Apr 2014 13:13:16 -0400
Subject: [PATCH] added Elasticsearch: The Definitive Guide

---
 free-programming-books.md | 1 +
 1 file changed, 1 insertion(+)

diff --git a/free-programming-books.md b/free-programming-books.md
index eb0a8506c..25f81d306 100644
--- a/free-programming-books.md
+++ b/free-programming-books.md
@@ -741,6 +741,7 @@
 
 ###Elasticsearch
 * [Exploring Elasticsearch](http://exploringelasticsearch.com/)
+* [Elasticsearch: The Definitive Guide](http://www.elasticsearch.org/guide/en/elasticsearch/guide/current/index.html)
 
 
 ###Emacs