refactor: migrate to PostgreSQL + Sequelize

server/modules/redis.js

@@ -0,0 +1,29 @@
+'use strict'
+
+/* global wiki */
+
+const Redis = require('ioredis')
+const { isPlainObject } = require('lodash')
+
+/**
+ * Redis module
+ *
+ * @return     {Object}  Redis client wrapper instance
+ */
+module.exports = {
+
+  /**
+   * Initialize Redis client
+   *
+   * @return     {Object}  Redis client instance
+   */
+  init() {
+    if (isPlainObject(wiki.config.redis)) {
+      return new Redis(wiki.config.redis)
+    } else {
+      wiki.logger.error('Invalid Redis configuration!')
+      process.exit(1)
+    }
+  }
+
+}