Aggregate requests

export default {
	async fetch(request) {
		// someHost is set up to return JSON responses
		const someHost = "https://jsonplaceholder.typicode.com";
		const url1 = someHost + "/todos/1";
		const url2 = someHost + "/todos/2";

		const responses = await Promise.all([fetch(url1), fetch(url2)]);
		const results = await Promise.all(responses.map((r) => r.json()));

		const options = {
			headers: { "content-type": "application/json;charset=UTF-8" },
		};
		return new Response(JSON.stringify(results), options);
	},
};

export default {
	async fetch(request) {
		// someHost is set up to return JSON responses
		const someHost = "https://jsonplaceholder.typicode.com";
		const url1 = someHost + "/todos/1";
		const url2 = someHost + "/todos/2";

		const responses = await Promise.all([fetch(url1), fetch(url2)]);
		const results = await Promise.all(responses.map((r) => r.json()));

		const options = {
			headers: { "content-type": "application/json;charset=UTF-8" },
		};
		return new Response(JSON.stringify(results), options);
	},
} satisfies ExportedHandler;

import { Hono } from "hono";

const app = new Hono();

app.get("*", async (c) => {
	// someHost is set up to return JSON responses
	const someHost = "https://jsonplaceholder.typicode.com";
	const url1 = someHost + "/todos/1";
	const url2 = someHost + "/todos/2";

	// Fetch both URLs concurrently
	const responses = await Promise.all([fetch(url1), fetch(url2)]);

	// Parse JSON responses concurrently
	const results = await Promise.all(responses.map((r) => r.json()));

	// Return aggregated results
	return c.json(results);
});

export default app;

from workers import Response, fetch, WorkerEntrypoint
import asyncio
import json

class Default(WorkerEntrypoint):
	async def fetch(self, request):
		# some_host is set up to return JSON responses
		some_host = "https://jsonplaceholder.typicode.com"
		url1 = some_host + "/todos/1"
		url2 = some_host + "/todos/2"

		responses = await asyncio.gather(fetch(url1), fetch(url2))
		results = await asyncio.gather(*(r.json() for r in responses))

		headers = {"content-type": "application/json;charset=UTF-8"}
		return Response.json(results, headers=headers)