Adding returnToHead in clientConfig param (brianc#1007)

Author: twisha16

lib/defaults.js

@@ -33,6 +33,9 @@ var defaults = module.exports = {
  //frequency to check for idle clients within the client pool
  reapIntervalMillis: 1000,
 
+ //if true the most recently released resources will be the first to be allocated
+ returnToHead: false,
+
  //pool log function / boolean
  poolLog: false,
 

lib/pool.js

@@ -22,6 +22,7 @@ module.exports = function(Client) {
  max: clientConfig.poolSize || defaults.poolSize,
  idleTimeoutMillis: clientConfig.poolIdleTimeout || defaults.poolIdleTimeout,
  reapIntervalMillis: clientConfig.reapIntervalMillis || defaults.reapIntervalMillis,
+ returnToHead: clientConfig.returnToHead || defaults.returnToHead,
  log: clientConfig.poolLog || defaults.poolLog,
  create: function(cb) {
  var client = new pools.Client(clientConfig);