docs: Adds guides for plugins and storefront starters (#840)

docs/content/troubleshooting/redis-events.md

@@ -0,0 +1,23 @@
+# Redis not emitting events
+
+When you create a new Medusa project, Redis is disabled by default. Instead, we use a fake Redis server, that allows you to start your project, but holds no functionality. 
+
+To enable a real Redis server, you need to install and start it up on your PC. Install it directly from their [website](https://redis.io/download) or use Homebrew and run the following commands:
+```bash
+brew install redis
+brew services start redis
+```
+
+Additonally, ensure that `redis_url` is not commented out in your project configuration in the bottom of your `medusa-config.js`.
+```jsx
+module.exports = {
+  projectConfig: {
+    redis_url: REDIS_URL, // <-- Enables a real Redis server
+    database_url: DATABASE_URL,
+    database_type: "postgres",
+    store_cors: STORE_CORS,
+    admin_cors: ADMIN_CORS,
+  },
+  plugins,
+};
+```