It is "cacheDns", not "dnsCache"

See https://github.com/sivy/node-statsd/issues/38

NEWS.md

@@ -9,7 +9,7 @@ Enhancements:
  - Do not log an error on GET / (#177)
  - Do not UNWATCH on every redis client release (#161)
  - Include API docs (#164)
- - Add "dnsCache" statsd setting in the example configs
+ - Add "cacheDns" statsd setting in the example configs
 
 Bug fixes:
 

config/environments/development.js.example

@@ -65,7 +65,7 @@ var config = {
         host: 'localhost',
         port: 8125,
         prefix: 'dev.',
-        dnsCache: true
+        cacheDns: true
         // support all allowed node-statsd options
     }
     ,renderer: {

config/environments/production.js.example

@@ -59,7 +59,7 @@ var config = {
         host: 'localhost',
         port: 8125,
         prefix: ':host.', // could be hostname, better not containing dots
-        dnsCache: true
+        cacheDns: true
         // support all allowed node-statsd options
     }
     ,renderer: {

config/environments/staging.js.example

@@ -59,7 +59,7 @@ var config = {
         host: 'localhost',
         port: 8125,
         prefix: 'stage.:host.',
-        dnsCache: true
+        cacheDns: true
         // support all allowed node-statsd options
     }
     ,renderer: {

config/environments/test.js.example

@@ -59,7 +59,7 @@ var config = {
         host: 'localhost',
         port: 8125,
         prefix: 'test.:host.',
-        dnsCache: true
+        cacheDns: true
         // support all allowed node-statsd options
     }
     ,renderer: {