diff -r 9ffe47dfa862 -r fdaa046f19ba elasticsearch.rst
--- a/elasticsearch.rst	Thu Oct 25 17:55:27 2018 +0300
+++ b/elasticsearch.rst	Sat Oct 27 22:36:35 2018 +0300
@@ -153,6 +153,8 @@
   How many shards should I have in my Elasticsearch cluster?
 https://www.elastic.co/blog/filebeat-modiles-access-logs-and-elasticsearch-storage-requirements
   Filebeat modules, access logs and Elasticsearch storage requirements.
+https://www.elastic.co/guide/en/elasticsearch/reference/master/heap-size.html
+  Setting the heap size.
 
 JSON search syntax
 ==================