dumbo/examples/http-cache/index.php

<?php

use Dumbo\Dumbo;
use Dumbo\Middleware\CacheMiddleware;

require __DIR__ . "/vendor/autoload.php";

$app = new Dumbo();

/**
 * CacheMiddleware is a middleware that adds cache control headers to the HTTP response.
 * This middleware is applied only to routes that begin with "/cached",
 * meaning that only these routes will have cache control headers.
 */

$app->use(
    "/cached",
    CacheMiddleware::withHeaders(
        type: "public",
        mustRevalidate: true,
        maxAge: 3600,
        strictEtag: true
    )
);

$app->get("/cached/greet", function ($c) {
    sleep(5);

    return $c->json([
        "message" => "Welcome cached route!",
    ]);
});

$app->get("/uncached/greet", function ($c) {
    sleep(5);

    return $c->json([
        "message" => "Uncached route!",
    ]);
});

$app->run();