Add docs

Author: Murderlon

packages/server/README.md

@@ -342,7 +342,6 @@ import S3Store, {type MetadataValue} from '@tus/s3-store'
 import {createClient} from '@redis/client'
 
 const client = await createClient().connect()
-const path = './uploads'
 const prefix = 'foo' // prefix for the key (foo${id})
 
 new S3Store({
@@ -351,6 +350,22 @@ new S3Store({
 })
 ```
 
+#### `IoRedisKvStore`
+
+```ts
+import { IoRedisKvStore } from '@tus/server';
+import S3Store, { type MetadataValue } from '@tus/s3-store';
+import Redis from 'ioredis';
+
+const client = new Redis();
+const prefix = 'foo'; // prefix for the key (foo${id})
+
+new S3Store({
+  // ...
+  cache: new IoRedisKvStore<MetadataValue>(client, prefix),
+});
+```
+
 ## Examples
 
 ### Example: integrate tus into Express