Deno KVでキューを実装【Deno Deploy】

# プッシュ
curl https://kvq.deno.dev/mykey -d '[{"a":"b"},"foo",null,42]'

# プル
curl https://kvq.deno.dev/mykey
{"a":"b"}
curl https://kvq.deno.dev/mykey
foo
curl https://kvq.deno.dev/mykey
null
curl https://kvq.deno.dev/mykey
42
curl https://kvq.deno.dev/mykey

import { serve } from "https://deno.land/std@0.177.0/http/server.ts";

const kv = await Deno.openKv();

serve(async (req: Request) => {
    const pathname = new URL(req.url).pathname
    if (req.method === 'GET') {
        for await (const { key, value } of kv.list({ prefix: [pathname] }, { limit: 1 })) {
            kv.delete(key)
            return new Response(typeof value === 'object' ? JSON.stringify(value) : value, { headers: { "Access-Control-Allow-Origin": "*" } })
        }
    } else if (req.method === 'POST') {
        const now = Date.now()
        const entries = await req.json()
        const id = Math.random()
        for(var i=0; i<entries.length; i++) {
            kv.set([pathname, now, i, id], entries[i])
        }
        return new Response('201 Created', { status: 201, headers: { "Access-Control-Allow-Origin": "*" } })
    }
    return new Response('', { status: 404, headers: { "Access-Control-Allow-Origin": "*" } })
});