Latency

async function measureLatency(url) {
  const start = performance.now();
  await fetch(url);
  const end = performance.now();
  
  const latency = end - start;
  console.log(`Latency: ${latency.toFixed(2)}ms`);
  return latency;
}

// Measure multiple times for accuracy
const results = await Promise.all([
  measureLatency("/api/users"),
  measureLatency("/api/users"),
  measureLatency("/api/users")
]);

const avg = results.reduce((a, b) => a + b) / results.length;
console.log(`Average: ${avg.toFixed(2)}ms`);