From e5d6642e4e6c08db2e5f1035a441465918f1c298 Mon Sep 17 00:00:00 2001
From: Louis Chatriot <louis.chatriot@gmail.com>
Date: Sat, 1 Jun 2013 22:49:08 +0200
Subject: [PATCH] Update README.md

---
 README.md | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/README.md b/README.md
index 9f656f1..f1d8922 100644
--- a/README.md
+++ b/README.md
@@ -301,11 +301,14 @@ d.insert({ name: 'nedb' }, function (err) {
   d.insert({ name: 'nedb' }, function (err) {
     // err is { errorType: 'uniqueViolated'
     //        , key: 'name'
-    //        , message: 'Unique constraint violated for key nedb' }
+    //        , message: 'Unique constraint violated for key name' }
   });
 });
 ```
 
+**Note: ** the ensureIndex creates the index synchronously, so it's best to use it at application startup. It's quite fast so it doesn't increase startup time much.
+
+
 
 ## Performance
 ### Speed