Framework Accelerator Bundle Laravel Package

Getting Started

Understand what you're holding before you run composer require. lexik/framework-accelerator-bundle is a Symfony bundle, not a Laravel package. It has no service provider, no facade, no publishable config, and no Artisan commands. Registration happens in app/AppKernel.php, a file that doesn't exist in a Laravel app. As a Laravel developer, your job is not to install this — it is to extract the pattern it implements and apply it with Laravel-native tooling. Everything below assumes that framing.

Where to look first, in order:

1. composer.json — check the symfony/symfony and php constraints. You will almost certainly see Symfony 2.x-era ranges and a PHP floor far below 8.x. This is the decisive fact and it takes ten seconds to confirm.
2. The bundle class (LexikFrameworkAcceleratorBundle.php) — a marker class with no meaningful logic; it exists only for kernel registration.
3. DependencyInjection/Configuration.php and Resources/config/services.xml — the entire surface area is a handful of service definitions and one or two config nodes. There is no hidden depth.
4. The router/cache classes — this is the only part worth reading. The bundle's reason to exist was avoiding the cost of recompiling the router and container on every request.

The first use case you actually have is not "install the bundle," it's "cut bootstrap time on a slow Laravel app." The bundle's thesis — pre-warm compiled artifacts at deploy time, serve them read-only at request time — maps one-to-one onto Laravel core:

# Your "accelerator" already ships in the framework:
php artisan config:cache
php artisan route:cache
php artisan view:cache
php artisan event:cache
composer dump-autoload -o --classmap-authoritative

If you're reaching for a third-party Symfony bundle to speed up a Laravel app, you've correctly identified the problem and are about to pick the wrong tool. Start a deploy-script spike instead: run the commands above against a staging environment, measure bootstrap time with Telescope or Blackfire before and after, and treat that delta as the ceiling of what this bundle could ever have given you.

If you have inherited a genuine Symfony 2.x application (the only scenario where the package is even discussable), the first use case is swapping the router to serve a pre-compiled route collection so the matcher isn't rebuilt per request — set the router class or the bundle's cache config key, warm the cache during deploy, and verify the cache directory is writable by the web user.

Implementation Patterns

Treat the bundle as a design reference, not a dependency. The transferable patterns are: warm compiled artifacts in CI/deploy, invalidate on change, serve read-only at runtime, and keep the cache out of your application's writable-by-default surface. Each maps to a Laravel-native implementation.

Pattern 1 — Deploy-time warmup pipeline. The core workflow. Cache warming belongs in your deploy script, after composer install and before traffic is switched over, never in a per-request code path:

# deploy.sh — run in CI, or in the release directory before symlink swap
composer install --no-dev --optimize-autoloader --classmap-authoritative
php artisan config:cache
php artisan route:cache
php artisan view:cache
php artisan event:cache
php artisan migrate --force
# only now flip the symlink

The Symfony bundle's "pre-warmed cache produced at deployment time" is exactly this. The ordering matters: composer dump-autoload must precede framework caching, because cached config can reference classes that must exist in an authoritative classmap.

Pattern 2 — Cache invalidation tied to build identity. The bundle advertises "automatic invalidation on changes." Laravel's equivalent is content-based: config:cache fingerprints the config files, route:cache fingerprints routes. Your job is to make sure CI never promotes a release built against a different config than the one running. In practice, key your build artifact (Docker layer, release tarball) on composer.lock + config files, so a config change forces a rebuild rather than a stale cache serving wrong values:

COPY composer.json composer.lock ./
COPY config/ ./config/
COPY routes/ ./routes/
RUN composer install --no-dev --optimize-autoloader && php artisan config:cache && php artisan route:cache

Pattern 3 — Response caching, layered on top. The bundle shipped an HttpCache variant; the Laravel analogue is response-level caching, not bootstrap caching, and you should reach for a maintained package rather than hand-rolling:

// config/responsecache.php + spatie/laravel-responsecache
// Cache full responses keyed on URL + Vary headers, tagged by model for invalidation
Route::middleware('cacheResponse:60')->group(function () {
    Route::get('/pricing', PricingController::class);
});

Invalidate via model events (ResponseCache::forget($url) in an observer) rather than TTL alone — the bundle's "automatic invalidation" claim is a promise you have to actively keep in the Laravel equivalent.

Pattern 4 — Per-environment cache config. A common Symfony-era trap that carries over: don't cache config in local development. Guard it in the deploy path only, since config:cache will freeze .env values and route:cache will fail on closure-based routes:

// routes/web.php — closures break route:cache; use controller classes
Route::get('/health', HealthController::class);

Pattern 5 — If you're actually in the legacy Symfony app. Pin the bundle in composer.json, commit composer.lock, register it last in AppKernel.php, warm the cache as an explicit deploy step, and assign a named owner. Quarantine it in that one service; do not let it spread.

Gotchas and Tips

The framework mismatch is the whole story. Installing this bundle via Composer into a Laravel app will autoload classes and do nothing else. There's no kernel to hook, no bundle registry to join. Any tutorial or LLM answer suggesting otherwise is wrong. Confirm by reading composer.json before you spend time on anything else.

Stale caches are the failure mode, not slow boot. Every "accelerator" of this shape trades a compute cost for an invalidation risk. After deploying, if a config change doesn't take effect, the cause is a cached artifact from an earlier release. Keep the recovery commands memorized:

php artisan optimize:clear        # clears config, route, view, event, compiled
php artisan config:clear && php artisan route:clear && php artisan view:clear
composer dump-autoload            # if classmap is stale after adding files

route:cache refuses closures — and the error is cryptic. A single Route::get('/x', fn () => ...) anywhere in your route files will fail the cache build with a "Unable to prepare route for serialization" message that doesn't name the offending file. Grep for fn ( and function ( in routes/ before adding route:cache to CI. This is the number-one reason warmup pipelines go red.

config:cache freezes .env — including secrets you meant to keep dynamic. After caching, env() calls outside config files return null. The bundle's "configurable cache location" has a Laravel analogue in APP_CONFIG_CACHE and APP_ROUTES_CACHE env vars; pointing them outside the release directory lets you share caches across releases, but only if the release identity is baked into the filename or the cache is rebuilt each deploy. Don't share writable cache dirs across concurrent releases without a plan.

Permissions bite in containerised deploys. bootstrap/cache and storage/framework/* must be writable by the PHP-FPM user, and if you warm caches as root in the Docker build they'll be owned by root at runtime. chown -R www-data:www-data bootstrap/cache storage as the last build step, or warm as the runtime user.

--classmap-authoritative is a one-way door. The bundle's loader tricks date from before Composer's authoritative classmap. The modern equivalent gives you the speedup, but it disables PSR-4 fallback: any class file added after dump-autoload will simply not be found, with a "class not found" that looks like a bug in your code. Enable it in production only, and only immediately before deploy.

Opcache multiplies the win and hides the bug. opcache.validate_timestamps=0 plus a warmed cache is where the real bootstrap savings live — but with validation off, a stale cache survives a file change until PHP-FPM reloads. Always php artisan optimize:clear before restarting workers in a dev-like environment, and always reload FPM after a cache-clearing deploy.

Don't port the autoloader or the container internals. The bundle's custom loader and container-inspection code are pre-Composer artifacts. Laravel's compiled container plus authoritative classmap already outperform them, and reimplementing them will introduce class-resolution bugs that are miserable to debug.

Extension point that actually exists: if you need per-request caching behaviour the framework doesn't offer, write a small middleware or a scoped service provider rather than adopting an abandoned bundle. The bundle's surface — a router decorator and a cache writer — is roughly 200 lines; you can own the equivalent in an afternoon and keep it patched.

The honest day-to-day takeaway: star count (16), dependents (0), and score (0.17) tell you the maintenance burden is entirely yours. Read the router-cache class once for the concept, then never add it to composer.json. Your day-to-day leverage comes from config:cache / route:cache / view:cache in a disciplined deploy pipeline — the same idea, zero dependency risk, and a framework version you can actually upgrade.