mirror of
https://github.com/supabase/supabase.git
synced 2026-10-11 12:25:05 +03:00
93 lines
2.9 KiB
Plaintext
93 lines
2.9 KiB
Plaintext
---
|
|
title: 'Upstash Redis'
|
|
description: 'Build an Edge Functions Counter with Upstash Redis.'
|
|
---
|
|
|
|
<div class="video-container">
|
|
<iframe
|
|
src="https://www.youtube-nocookie.com/embed/OPg3_oPZCh0"
|
|
frameBorder="1"
|
|
allow="accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture"
|
|
allowFullScreen
|
|
></iframe>
|
|
</div>
|
|
|
|
A Redis counter example that stores a [hash](https://redis.io/commands/hincrby/) of function invocation count per region. Find the code on [GitHub](https://github.com/supabase/supabase/tree/master/examples/edge-functions/supabase/functions/upstash-redis-counter).
|
|
|
|
## Redis database setup
|
|
|
|
Create a Redis database using the [Upstash Console](https://console.upstash.com/) or [Upstash CLI](https://github.com/upstash/cli).
|
|
|
|
Select the `Global` type to minimize the latency from all edge locations. Copy the `UPSTASH_REDIS_REST_URL` and `UPSTASH_REDIS_REST_TOKEN` to your .env file.
|
|
|
|
You'll find them under **Details > REST API > .env**.
|
|
|
|
```bash
|
|
cp supabase/functions/upstash-redis-counter/.env.example supabase/functions/upstash-redis-counter/.env
|
|
```
|
|
|
|
## Code
|
|
|
|
Make sure you have the latest version of the [Supabase CLI installed](/docs/guides/cli#installation).
|
|
|
|
Create a new function in your project:
|
|
|
|
```bash
|
|
supabase functions new upstash-redis-counter
|
|
```
|
|
|
|
And add the code to the `index.ts` file:
|
|
|
|
```ts index.ts
|
|
import { Redis } from 'https://deno.land/x/upstash_redis@v1.19.3/mod.ts'
|
|
|
|
console.log(`Function "upstash-redis-counter" up and running!`)
|
|
|
|
Deno.serve(async (_req) => {
|
|
try {
|
|
const redis = new Redis({
|
|
url: Deno.env.get('UPSTASH_REDIS_REST_URL')!,
|
|
token: Deno.env.get('UPSTASH_REDIS_REST_TOKEN')!,
|
|
})
|
|
|
|
const deno_region = Deno.env.get('DENO_REGION')
|
|
if (deno_region) {
|
|
// Increment region counter
|
|
await redis.hincrby('supa-edge-counter', deno_region, 1)
|
|
} else {
|
|
// Increment localhost counter
|
|
await redis.hincrby('supa-edge-counter', 'localhost', 1)
|
|
}
|
|
|
|
// Get all values
|
|
const counterHash: Record<string, number> | null = await redis.hgetall('supa-edge-counter')
|
|
const counters = Object.entries(counterHash!)
|
|
.sort(([, a], [, b]) => b - a) // sort desc
|
|
.reduce((r, [k, v]) => ({ total: r.total + v, regions: { ...r.regions, [k]: v } }), {
|
|
total: 0,
|
|
regions: {},
|
|
})
|
|
|
|
return new Response(JSON.stringify({ counters }), { status: 200 })
|
|
} catch (error) {
|
|
return new Response(JSON.stringify({ error: error.message }), { status: 200 })
|
|
}
|
|
})
|
|
```
|
|
|
|
## Run locally
|
|
|
|
```bash
|
|
supabase start
|
|
supabase functions serve --no-verify-jwt --env-file supabase/functions/upstash-redis-counter/.env
|
|
```
|
|
|
|
Navigate to http://localhost:54321/functions/v1/upstash-redis-counter.
|
|
|
|
## Deploy
|
|
|
|
```bash
|
|
supabase functions deploy upstash-redis-counter --no-verify-jwt
|
|
supabase secrets set --env-file supabase/functions/upstash-redis-counter/.env
|
|
```
|