responsecache-development - SKILL.md Agent Skill

name: responsecache-development description: Cache entire HTTP responses using spatie/laravel-responsecache, including standard caching, flexible (stale-while-revalidate) caching, cache profiles, replacers, and selective cache clearing.

Response Cache Development

When to use this skill

Use this skill when working with HTTP response caching in a Laravel application using spatie/laravel-responsecache. This includes adding cache middleware to routes, configuring cache profiles, clearing cached responses, creating custom replacers, or working with flexible (stale-while-revalidate) caching.

Applying cache middleware to routes

Use the CacheResponse middleware to cache entire responses:

use Spatie\ResponseCache\Middlewares\CacheResponse;

// Cache with default lifetime (from config)
Route::middleware(CacheResponse::class)->group(function () {
    Route::get('/posts', [PostController::class, 'index']);
});

// Cache with custom lifetime using CarbonInterval
Route::middleware(CacheResponse::for(lifetime: CarbonInterval::minutes(10)))->group(function () {
    Route::get('/posts', [PostController::class, 'index']);
});

// Cache with tags for selective clearing
Route::middleware(CacheResponse::for(lifetime: CarbonInterval::hour(), tags: 'posts'))->group(function () {
    Route::get('/posts', [PostController::class, 'index']);
});

Flexible (stale-while-revalidate) caching

Serve stale content while refreshing in the background using FlexibleCacheResponse:

use Spatie\ResponseCache\Middlewares\FlexibleCacheResponse;

Route::middleware(FlexibleCacheResponse::for(
    lifetime: CarbonInterval::minutes(5),
    grace: CarbonInterval::minute(),
    tags: 'posts',
))->group(function () {
    Route::get('/posts', [PostController::class, 'index']);
});

The response is considered fresh for lifetime seconds. After that, stale content is served while a background refresh happens within the grace period.

PHP attributes on controller methods

Use attributes instead of middleware for per-action control:

use Spatie\ResponseCache\Attributes\Cache;
use Spatie\ResponseCache\Attributes\FlexibleCache;
use Spatie\ResponseCache\Attributes\NoCache;

class PostController
{
    // Cache with custom lifetime (seconds) and tags
    #[Cache(lifetime: 600, tags: ['posts'])]
    public function index() { /* ... */ }

    // Flexible cache with lifetime and grace (seconds)
    #[FlexibleCache(lifetime: 300, grace: 60, tags: ['posts'])]
    public function popular() { /* ... */ }

    // Prevent caching on a specific action
    #[NoCache]
    public function create() { /* ... */ }
}

Attributes work when the CacheResponse or FlexibleCacheResponse middleware is applied to the route.

Preventing caching

Use the DoNotCacheResponse middleware to prevent caching:

use Spatie\ResponseCache\Middlewares\DoNotCacheResponse;

Route::middleware(DoNotCacheResponse::class)->group(function () {
    Route::get('/account', [AccountController::class, 'show']);
});

Or use the #[NoCache] attribute on individual controller methods.

Clearing cached responses

use Spatie\ResponseCache\Facades\ResponseCache;

// Clear all cached responses
ResponseCache::clear();

// Clear only responses with specific tags (requires a tag-supporting cache driver)
ResponseCache::clear(['posts']);

// Forget specific URLs
ResponseCache::forget('/posts');
ResponseCache::forget(['/posts', '/posts/popular']);

// Forget specific URLs with tags
ResponseCache::forget('/posts', ['posts']);

// Selective clearing with the fluent API
ResponseCache::selectCachedItems()
    ->forUrls('/posts', '/posts/popular')
    ->usingTags('posts')
    ->forget();

Clear via Artisan:

php artisan responsecache:clear

Creating a custom cache profile

Implement the CacheProfile interface to control what gets cached:

use Illuminate\Http\Request;
use Spatie\ResponseCache\CacheProfiles\CacheProfile;
use Symfony\Component\HttpFoundation\Response;

class CustomCacheProfile implements CacheProfile
{
    public function enabled(Request $request): bool
    {
        // Return false to disable caching entirely
        return true;
    }

    public function shouldCacheRequest(Request $request): bool
    {
        return $request->isMethod('GET');
    }

    public function shouldCacheResponse(Response $response): bool
    {
        return $response->isSuccessful();
    }

    public function cacheLifetimeInSeconds(Request $request): int
    {
        return 3600;
    }

    public function useCacheNameSuffix(Request $request): string
    {
        // Return a unique suffix to separate caches, e.g. per user
        return auth()->check() ? (string) auth()->id() : '';
    }
}

'cache_profile' => App\CacheProfiles\CustomCacheProfile::class,

You can also extend Spatie\ResponseCache\CacheProfiles\BaseCacheProfile for sensible defaults.

Creating a custom replacer

Replacers swap dynamic content (like CSRF tokens) so cached responses stay valid:

use Spatie\ResponseCache\Replacers\Replacer;
use Symfony\Component\HttpFoundation\Response;

class UserNameReplacer implements Replacer
{
    public function prepareResponseToCache(Response $response): void
    {
        // Replace the actual value with a placeholder before caching
        $content = $response->getContent();
        $response->setContent(str_replace(
            auth()->user()->name,
            '<USERNAME_PLACEHOLDER>',
            $content,
        ));
    }

    public function replaceInCachedResponse(Response $response): void
    {
        // Replace the placeholder with the current value when serving
        $content = $response->getContent();
        $response->setContent(str_replace(
            '<USERNAME_PLACEHOLDER>',
            auth()->user()?->name ?? '',
            $content,
        ));
    }
}

'replacers' => [
    \Spatie\ResponseCache\Replacers\CsrfTokenReplacer::class,
    \App\Replacers\UserNameReplacer::class,
],

Creating a custom hasher

Implement RequestHasher to customize how cache keys are generated:

use Illuminate\Http\Request;
use Spatie\ResponseCache\Hasher\RequestHasher;

class CustomHasher implements RequestHasher
{
    public function getHashFor(Request $request): string
    {
        return hash('xxh128', $request->getUri());
    }
}

'hasher' => App\Hashers\CustomHasher::class,

Events

The package dispatches these events:

ResponseCacheHitEvent — a cached response was served. Properties: $request, $ageInSeconds, $tags.
CacheMissedEvent — no cached response found. Properties: $request.
ClearingResponseCacheEvent — cache is about to be cleared.
ClearedResponseCacheEvent — cache was cleared successfully.
ClearingResponseCacheFailedEvent — cache clearing failed.

Configuration

Key configuration options in config/responsecache.php:

enabled — toggle caching on/off (env: RESPONSE_CACHE_ENABLED)
cache.store — cache driver to use (env: RESPONSE_CACHE_DRIVER, default: file)
cache.lifetime_in_seconds — default cache lifetime (env: RESPONSE_CACHE_LIFETIME, default: 7 days)
cache.tag — default tag for cache entries
bypass.header_name / bypass.header_value — header to bypass cache for testing
debug.enabled — add X-Cache-Status, X-Cache-Time, X-Cache-Age, X-Cache-Key headers
ignored_query_parameters — query params excluded from cache key (UTM tags, gclid, fbclid)
cache_profile — class determining what to cache
hasher — class generating cache keys
serializer — class serializing/unserializing responses
replacers — classes replacing dynamic content in cached responses