fix(cluster): set retryDelayOnFailover from 2000ms to 200ms

Author: luin

API.md

@@ -216,11 +216,11 @@ Creates a Redis Cluster instance
 | options | <code>Object</code> |  |  |
 | [options.enableOfflineQueue] | <code>boolean</code> | <code>true</code> | See Redis class |
 | [options.lazyConnect] | <code>boolean</code> | <code>false</code> | See Redis class |
-| [options.scaleReads] | <code>string</code> | <code>&quot;\&quot;masters\&quot;&quot;</code> | Scale reads to the node with the specified role. Available values are "masters", "slaves" and "all". |
+| [options.scaleReads] | <code>string</code> | <code>&quot;masters&quot;</code> | Scale reads to the node with the specified role. Available values are "masters", "slaves" and "all". |
 | [options.maxRedirections] | <code>number</code> | <code>16</code> | When a MOVED or ASK error is received, client will redirect the command to another node. This option limits the max redirections allowed to send a command. |
 | [options.clusterRetryStrategy] | <code>function</code> |  | See "Quick Start" section |
-| [options.retryDelayOnFailover] | <code>number</code> | <code>2000</code> | When an error is received when sending a command(e.g. "Connection is closed." when the target Redis node is down), |
-| [options.retryDelayOnClusterDown] | <code>number</code> | <code>1000</code> | When a CLUSTERDOWN error is received, client will retry if `retryDelayOnClusterDown` is valid delay time. |
+| [options.retryDelayOnFailover] | <code>number</code> | <code>100</code> | When an error is received when sending a command(e.g. "Connection is closed." when the target Redis node is down), |
+| [options.retryDelayOnClusterDown] | <code>number</code> | <code>100</code> | When a CLUSTERDOWN error is received, client will retry if `retryDelayOnClusterDown` is valid delay time. |
 
 <a name="Cluster+connect"></a>
 ### cluster.connect() ⇒ <code>Promise</code>
@@ -244,7 +244,7 @@ Get nodes with the specified role
 
 | Param | Type | Default | Description |
 | --- | --- | --- | --- |
-| [role] | <code>string</code> | <code>&quot;\&quot;all\&quot;&quot;</code> | role, "masters", "slaves" or "all" |
+| [role] | <code>string</code> | <code>&quot;all&quot;</code> | role, "masters", "slaves" or "all" |
 
 <a name="Commander+getBuiltinCommands"></a>
 ### cluster.getBuiltinCommands() ⇒ <code>Array.&lt;string&gt;</code>

lib/cluster/index.js

@@ -27,9 +27,9 @@ var ConnectionPool = require('./connection_pool');
  * @param {number} [options.maxRedirections=16] - When a MOVED or ASK error is received, client will redirect the
  * command to another node. This option limits the max redirections allowed to send a command.
  * @param {function} [options.clusterRetryStrategy] - See "Quick Start" section
- * @param {number} [options.retryDelayOnFailover=2000] - When an error is received when sending a command(e.g.
+ * @param {number} [options.retryDelayOnFailover=100] - When an error is received when sending a command(e.g.
  * "Connection is closed." when the target Redis node is down),
- * @param {number} [options.retryDelayOnClusterDown=1000] - When a CLUSTERDOWN error is received, client will retry
+ * @param {number} [options.retryDelayOnClusterDown=100] - When a CLUSTERDOWN error is received, client will retry
  * if `retryDelayOnClusterDown` is valid delay time.
  * @extends [EventEmitter](http://nodejs.org/api/events.html#events_class_events_eventemitter)
  * @extends Commander
@@ -103,8 +103,8 @@ function Cluster(startupNodes, options) {
  */
 Cluster.defaultOptions = {
   maxRedirections: 16,
-  retryDelayOnFailover: 2000,
-  retryDelayOnClusterDown: 1000,
+  retryDelayOnFailover: 100,
+  retryDelayOnClusterDown: 100,
   scaleReads: 'masters',
   enableOfflineQueue: true,
   clusterRetryStrategy: function (times) {

test/functional/cluster.js

@@ -339,20 +339,22 @@ describe('cluster', function () {
     });
 
     it('should be able to redirect a command to a unknown node', function (done) {
-      var slotTable = [
-        [0, 16383, ['127.0.0.1', 30001]]
-      ];
       var node1 = new MockServer(30001, function (argv) {
         if (argv[0] === 'cluster' && argv[1] === 'slots') {
-          return slotTable;
+          return [
+            [0, 16383, ['127.0.0.1', 30001]]
+          ];
         }
         if (argv[0] === 'get' && argv[1] === 'foo') {
           return new Error('MOVED ' + utils.calcSlot('foo') + ' 127.0.0.1:30002');
         }
       });
       var node2 = new MockServer(30002, function (argv) {
         if (argv[0] === 'cluster' && argv[1] === 'slots') {
-          return slotTable;
+          return [
+            [0, 16381, ['127.0.0.1', 30001]],
+            [16382, 16383, ['127.0.0.1', 30002]]
+          ];
         }
         if (argv[0] === 'get' && argv[1] === 'foo') {
           return 'bar';