Caching y CDN: frescura, invalidación y escala

Caching y CDN: frescura, invalidación y escala | Nicolás Garzón

TypeScript

async function getProduct(
  tenantId: string,
  productId: string,
): Promise<ProductView | null> {
  const key = `product:v2:${tenantId}:${productId}`;
  const cached = await cache.get(key);

  if (cached) return JSON.parse(cached);

  const product = await repository.findById(tenantId, productId);
  if (!product) {
    await cache.set(key, "null", { ttlSeconds: 30 });
    return null;
  }

  const view = toProductView(product);
  await cache.set(key, JSON.stringify(view), { ttlSeconds: 300 });
  return view;
}