Connecting to cluster example (#2298)

* Connecting to cluster example

* Connecting to cluster example

* Making changes according to review

* Adding example to Readme.md in alphabetical order

* Fixed order of scripts so they are alphabetic.

Co-authored-by: Simon Prickett <[email protected]>

Closes #2281.

Author: varadkarpe

examples/README.md

@@ -8,6 +8,7 @@ This folder contains example scripts showing how to use Node Redis in different
 | `bloom-filter.js`           | Space efficient set membership checks with a [Bloom Filter](https://en.wikipedia.org/wiki/Bloom_filter) using [RedisBloom](https://redisbloom.io)   |
 | `command-with-modifiers.js` | Define a script that allows to run a command with several modifiers                                                                                 |
 | `connect-as-acl-user.js`    | Connect to Redis 6 using an ACL user                                                                                                                |
+| `connect-to-cluster.js`    | Connect to Redis cluster                                                                                                              |
 | `count-min-sketch.js`       | Estimate the frequency of a given event using the [RedisBloom](https://redisbloom.io) Count-Min Sketch                                              |
 | `cuckoo-filter.js`          | Space efficient set membership checks with a [Cuckoo Filter](https://en.wikipedia.org/wiki/Cuckoo_filter) using [RedisBloom](https://redisbloom.io) |
 | `get-server-time.js`        | Get the time from the Redis server                                                                                                                  |

examples/connect-to-cluster.js

@@ -0,0 +1,33 @@
+// This is an example script to connect to a running cluster.
+// After connecting to the cluster the code sets and get a value.
+
+// To setup this cluster you can follow the guide here: 
+// https://redis.io/docs/manual/scaling/
+// In this guide the ports which are being used are 7000 - 7005
+
+
+import { createCluster } from 'redis';
+
+const cluster = createCluster({
+    rootNodes : [
+        {
+            url : 'redis://127.0.0.1:7001'
+        },
+        {
+            url : 'redis://127.0.0.1:7002'
+        },
+        {
+            url : 'redis://127.0.0.1:7003'
+        }
+    ]
+});
+
+cluster.on('error', (err) => console.log('Redis Client Error', err));
+
+await cluster.connect();
+
+await cluster.set('hello', 'cluster');
+const value = await cluster.get('hello');
+console.log(value);
+
+await cluster.quit();