Update README.md

Author: mpyw

README.md

@@ -41,16 +41,14 @@ Then select the proper cache driver:
 
 | Driver | Is eligible? | Description |
 |:---|:---:|:---|
-| **`redis`** | 😄 | Very fast, scalable and reliable driver | 
+| **`redis`** | 😄 | Very fast, scalable and reliable driver<br>**(Cluster mode must be disabled)** | 
 | **`memcached`** | 😄 |  Alternative for Redis | 
-| `dynamodb` | 😃 |  It works but not so suitable for short-term caching |
+| `dynamodb` | 😧 |  It works but not so suitable for short-term caching<br>**(`ConsistentRead` must be enabled)** |
 | `apc` | 😧 | It works unless PHP processes are running in multiple machines or containers | 
 | `file` | 😧 | It works unless PHP processes are running in multiple machines or containers |
 | <del>`database`</del> | 🤮 | We'll get into a chicken-or-egg situation |
 | <del>`array`</del> | 🤮 | Just for testing |
 
-**Attention: You MUST DISABLE cluster-mode on Redis for this purpose.**
-
 ## Features
 
 This library provides the following features.