update redis sveltekit template (#1065)

### Description

- replace `@vercel/kv` by `redis`, supporting any marketplace Redis
providers
- replace Vercel KV copies by Redis
- update deploy url

### Demo URL

<!--
Provide a URL to a live deployment where we can test your PR. If a demo
isn't possible feel free to omit this section.
-->

### Type of Change

- [ ] New Example
- [ ] Example updates (Bug fixes, new features, etc.)
- [ ] Other (changes to the codebase, but not to examples)

### New Example Checklist

- [ ] 🛫 `npm run new-example` was used to create the example
- [ ] 📚 The template wasn't used but I carefuly read the [Adding a new
example](https://github.com/vercel/examples#adding-a-new-example) steps
and implemented them in the example
- [ ] 📱 Is it responsive? Are mobile and tablets considered?

storage/kv-redis-sveltekit/.env.example

@@ -1,4 +1,2 @@
 KV_URL=
-KV_REST_API_URL=
-KV_REST_API_TOKEN=
-KV_REST_API_READ_ONLY_TOKEN=
+REDIS_URL= 

storage/kv-redis-sveltekit/README.md

@@ -1,21 +1,21 @@
 ---
-name: Vercel KV for Redis SvelteKit Starter
+name: Redis SvelteKit Starter
 slug: kv-redis-sveltekit
-description: Simple SvelteKit template that uses Vercel KV for Redis to track pageviews.
+description: Simple SvelteKit template that uses Redis to track pageviews.
 framework: Svelte
 useCase: Starter
 css: Tailwind
-database: Vercel KV
-deployUrl: https://vercel.com/new/clone?repository-url=https%3A%2F%2Fgithub.com%2Fvercel%2Fexamples%2Ftree%2Fmain%2Fstorage%2Fkv-redis-sveltekit&project-name=kv-redis-sveltekit&repository-name=kv-redis-sveltekit&demo-title=Vercel%20KV%20for%20Redis%20SvelteKit%20Starter&demo-description=Simple%20Svelte%20template%20that%20uses%20Vercel%20KV%20for%20Redis%20to%20track%20pageviews.&demo-url=https%3A%2F%2Fkv-redis-sveltekit.vercel.app%2F&demo-image=https%3A%2F%2Fkv-redis-sveltekit.vercel.app%2Fopengraph-image.png&stores=%5B%7B"type"%3A"kv"%7D%5D
+database: Redis
+deployUrl: https://vercel.com/new/clone?repository-url=https%3A%2F%2Fgithub.com%2Fvercel%2Fexamples%2Ftree%2Fmain%2Fstorage%2Fkv-redis-sveltekit&project-name=kv-redis-sveltekit&repository-name=kv-redis-sveltekit&demo-title=Vercel%20KV%20for%20Redis%20SvelteKit%20Starter&demo-description=Simple%20Svelte%20template%20that%20uses%20Vercel%20KV%20for%20Redis%20to%20track%20pageviews.&demo-url=https%3A%2F%2Fkv-redis-sveltekit.vercel.app%2F&demo-image=https%3A%2F%2Fkv-redis-sveltekit.vercel.app%2Fopengraph-image.png&products=%5B%7B"type"%3A"integration"%2C"group"%3A"redis"%7D%5D
 demoUrl: https://kv-redis-sveltekit.vercel.app/
 relatedTemplates:
   - blob-starter
   - postgres-starter
 ---
 
-# Vercel KV for Redis SvelteKit Starter
+# Redis SvelteKit Starter
 
-Simple SvelteKit template that uses [Vercel KV for Redis](https://vercel.com/kv) to track pageviews.
+Simple SvelteKit template that uses Redis to track pageviews.
 
 ## Demo
 
@@ -29,7 +29,7 @@ You can choose from one of the following two methods to use this repository:
 
 Deploy the example using [Vercel](https://vercel.com?utm_source=github&utm_medium=readme&utm_campaign=vercel-examples)
 
-[![Deploy with Vercel](https://vercel.com/button)](https://vercel.com/new/clone?repository-url=https%3A%2F%2Fgithub.com%2Fvercel%2Fexamples%2Ftree%2Fmain%2Fstorage%2Fkv-redis-sveltekit&project-name=kv-redis-sveltekit&repository-name=kv-redis-sveltekit&demo-title=Vercel%20KV%20for%20Redis%20Svelte%20Starter&demo-description=Simple%20SvelteKit%20template%20that%20uses%20Vercel%20KV%20for%20Redis%20to%20track%20pageviews.&demo-url=https%3A%2F%2Fkv-redis-sveltekit.vercel.app%2F&demo-image=https%3A%2F%2Fkv-redis-sveltekit.vercel.app%2Fopengraph-image.png&stores=%5B%7B"type"%3A"kv"%7D%5D)
+[![Deploy with Vercel](https://vercel.com/button)](https://vercel.com/new/clone?repository-url=https%3A%2F%2Fgithub.com%2Fvercel%2Fexamples%2Ftree%2Fmain%2Fstorage%2Fkv-redis-sveltekit&project-name=kv-redis-sveltekit&repository-name=kv-redis-sveltekit&demo-title=Vercel%20KV%20for%20Redis%20Svelte%20Starter&demo-description=Simple%20SvelteKit%20template%20that%20uses%20Vercel%20KV%20for%20Redis%20to%20track%20pageviews.&demo-url=https%3A%2F%2Fkv-redis-sveltekit.vercel.app%2F&demo-image=https%3A%2F%2Fkv-redis-sveltekit.vercel.app%2Fopengraph-image.png&products=%5B%7B"type"%3A"integration"%2C"group"%3A"redis"%7D%5D)
 
 ### Clone and Deploy
 

storage/kv-redis-sveltekit/package.json

@@ -26,6 +26,6 @@
     "vite": "^5.4.4"
   },
   "dependencies": {
-    "@upstash/redis": "^1.34.3"
+    "redis": "^4.7.0"
   }
 }

storage/kv-redis-sveltekit/src/routes/+page.server.ts

@@ -1,14 +1,14 @@
-import { KV_REST_API_TOKEN, KV_REST_API_URL } from '$env/static/private'
-import { Redis } from '@upstash/redis'
+import { REDIS_URL, KV_URL } from '$env/static/private'
+import { createClient } from 'redis'
+
+const kv = await createClient({
+  url: REDIS_URL ?? KV_URL,
+}).connect()
 
 /** @type {import('./$types').PageLoad} */
 export async function load() {
-  const kv = new Redis({
-    url: KV_REST_API_URL,
-    token: KV_REST_API_TOKEN,
-  })
-  const pageVisits = await kv.get<number>('pageVisits')
-  await kv.set('pageVisits', (pageVisits || 0) + 1)
+  const pageVisits = await kv.get('pageVisits')
+  await kv.set('pageVisits', Number.parseInt(pageVisits ?? '0', 10) + 1)
   const updatedPageVisits = await kv.get('pageVisits')
 
   return {

storage/kv-redis-sveltekit/src/routes/+page.svelte

@@ -17,7 +17,7 @@
   <h1
     class="pt-4 pb-8 bg-gradient-to-br dark:from-white from-black via-[#707070] to-[#ffffff] bg-clip-text text-center text-4xl font-medium tracking-tight text-transparent md:text-7xl"
   >
-    Vercel KV
+    Redis
   </h1>
   <div
     class="flex flex-col items-center w-full max-w-xl p-12 mx-auto rounded-lg shadow-xl dark:bg-white/10 bg-white/30 ring-1 ring-gray-900/5 backdrop-blur-lg"
@@ -39,13 +39,7 @@
   <div
     class="w-full max-w-lg mt-6 font-light text-center text-gray-600 dark:text-gray-300"
   >
-    Simple hello world demo of
-    <a
-      href="https://vercel.com/kv"
-      class="font-medium underline transition-colors underline-offset-4 dark:hover:text-white hover:text-black"
-    >
-      Vercel KV
-    </a>
+    Simple hello world demo of Redis
     <div class="flex items-center justify-center my-2">
       <span>Built with</span>
       <a