Merge pull request #2526 from withspectrum/cherry-pick

Cherry pick

Author: brianlovin

iris/models/db.js

@@ -10,6 +10,7 @@ const DEFAULT_CONFIG = {
   max: 100, // Maximum number of connections, default is 1000
   buffer: 5, // Minimum number of connections open at any given moment, default is 50
   timeoutGb: 60 * 1000, // How long should an unused connection stick around, default is an hour, this is a minute
+  pingInterval: 300, // Ping the connection every 5 minutes (300 seconds) to keep it alive and prevent rethinkdbdash#192
 };
 
 const PRODUCTION_CONFIG = {