TechEmpower.FrameworkBenchmarks/frameworks/PHP/symfony/config/packages/doctrine.yaml

doctrine:
    dbal:
        # configure these for your database server
        driver: 'pdo_mysql'
        server_version: '8.0'
        charset: utf8mb4
        default_table_options:
            charset: utf8mb4
            collate: utf8mb4_unicode_ci
        options:
            !php/const \PDO::ATTR_PERSISTENT: true
        url: '%env(resolve:DATABASE_URL)%'
    orm:
        auto_generate_proxy_classes: true
        naming_strategy: doctrine.orm.naming_strategy.default
        auto_mapping: true
        mappings:
            App:
                is_bundle: false
                type: annotation
                dir: '%kernel.project_dir%/src/Entity'
                prefix: 'App\Entity'
                alias: App