Added ability to use redis datastores for session data

src/redis.js

@@ -0,0 +1,31 @@
+const redisConfig = require('config').get('redis');
+
+exports.default = function() {
+  let redisUrl = 'redis://';
+
+  // add the redis username if defined
+  if (typeof redisConfig.get('username') !== 'undefined') {
+    redisUrl += redisConfig.get('username');
+  }
+  // add the user password if defined
+  if (typeof redisConfig.get('password') !== 'undefined') {
+    redisUrl += ':' + redisConfig.get('password') + '@';
+  }
+  // add redis host URL
+  redisUrl += redisConfig.get('host');
+  // add redis host port
+  redisUrl += ':' + redisConfig.get('port');
+  // add redis database number if defined
+  if (typeof redisConfig.get('number') !== 'undefined') {
+    redisUrl += redisConfig.get('number');
+  }
+
+  const { createClient } = require("redis");
+  let redisClient = createClient({
+    url: redisUrl,
+    legacyMode: true,
+  });
+  redisClient.connect().catch(console.error);
+
+  return redisClient;
+};