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import { fetch } from "https://esm.town/v/std/fetch";
export const test_concurrencyDoesntWork = (async () => {
const fetchDelayedResponse = async (index: number) => {
const start = Date.now();
const response = await fetch(
"https://api.val.town/v1/express/alp.proxyFetch1",
{
method: "POST",
body: JSON.stringify({
url: "https://hub.dummyapis.com/delay?seconds=1",
}),
}
);
console.log(
`Returned data for ${index}, took:`,
(Date.now() - start) / 1000,
"seconds"
);
};
const fetchDelayedResponseWithLoadBalancer = async (index: number) => {
const start = Date.now();
const response = await fetch(
`https://api.val.town/v1/express/alp.proxyFetch${index}`,
{
method: "POST",
body: JSON.stringify({
url: "https://hub.dummyapis.com/delay?seconds=2",
}),
}
);
console.log(
`Returned data for ${index}, took:`,
(Date.now() - start) / 1000,
"seconds"
);
};
console.log("w/o load balancer");
await Promise.all([
fetchDelayedResponse(1),
fetchDelayedResponse(2),
fetchDelayedResponse(3),
fetchDelayedResponse(4),
fetchDelayedResponse(5),
]);
console.log("w/ load balancer");
await Promise.all([
fetchDelayedResponseWithLoadBalancer(1),
fetchDelayedResponseWithLoadBalancer(2),
fetchDelayedResponseWithLoadBalancer(3),
fetchDelayedResponseWithLoadBalancer(4),
fetchDelayedResponseWithLoadBalancer(5),
]);
})();
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