# Schema caching

As your schema grows larger, the construction of the schema from raw .graphql files becomes more and more costly.

Make sure to enable schema caching when shipping Lighthouse to production.

    | Schema Cache
    | A large part of schema generation is parsing the schema into an AST.
    | This operation is pretty expensive so it is recommended to enable
    | caching in production mode, especially for large schemas.

    'cache' => [
        'enable' => env('LIGHTHOUSE_CACHE_ENABLE', true),
        'key' => env('LIGHTHOUSE_CACHE_KEY', 'lighthouse-schema'),

You may clear your schema cache using the clear-cache artisan command:

php artisan lighthouse:clear-cache