- How do I replace Laravel’s default filesystem with league/flysystem?
- Extend Laravel’s `FilesystemServiceProvider` to register flysystem adapters in `config/filesystems.php`. For example, define an S3 disk with the `AwsS3Adapter` class and inject AWS credentials. Laravel’s `Storage` facade will then use flysystem under the hood without breaking existing code.
- Can I use flysystem for both local and cloud storage in the same Laravel app?
- Yes. Use Laravel’s `MountManager` to dynamically mount multiple filesystems (e.g., local, S3, FTP) under a single interface. This lets you switch between storage backends without changing business logic, ideal for hybrid setups.
- Does league/flysystem support async file operations for AWS S3 in Laravel?
- Yes, use the `AsyncAwsS3Adapter` with Laravel’s queue system to offload large file uploads or downloads. Configure it in a service provider and dispatch jobs for non-blocking operations, reducing timeouts and improving performance.
- What Laravel versions are compatible with league/flysystem?
- Flysystem works with Laravel 8.x through 11.x. For Laravel 10+, ensure you’re using flysystem 3.x (PHP 8.1+) or 2.x (PHP 7.4+). Check the [Laravel Filesystem docs](https://laravel.com/docs/filesystem) for adapter-specific requirements.
- How do I generate signed URLs (e.g., S3 pre-signed URLs) with flysystem in Laravel?
- Use flysystem’s built-in `publicUrl()` or `temporaryUrl()` methods on adapters like `AwsS3Adapter`. For S3, these methods integrate with AWS SDK to generate pre-signed URLs with custom expiry times, matching Laravel’s `Storage::disk()->url()` behavior.
- Can I mock flysystem adapters in PHPUnit for testing?
- Yes. Use PHPUnit’s mocking to replace adapters with test doubles. For example, mock `AwsS3Adapter` to simulate failed uploads or network timeouts. This is critical for testing edge cases like SFTP connection drops or S3 throttling.
- What are the performance implications of using flysystem with remote storage (e.g., S3) in Laravel?
- Remote adapters (e.g., S3, SFTP) introduce latency compared to local storage. Mitigate this by caching metadata with `CacheAdapter` or using Laravel’s queue system for async operations. Benchmark local vs. remote adapters to identify bottlenecks.
- How do I handle adapter-specific errors (e.g., SFTP connection failures) in Laravel?
- Wrap flysystem operations in try-catch blocks to handle adapter-specific exceptions. For SFTP, validate host fingerprints (new in flysystem 3.33.0) and implement retries with Laravel’s `retry` helper or a custom decorator.
- Are there alternatives to league/flysystem for Laravel filesystem abstraction?
- Laravel’s native `Storage` facade already uses flysystem under the hood for S3, FTP, and local storage. For advanced use cases, consider `spatie/laravel-medialibrary` (for Eloquent file attachments) or `intervention/image` (for image processing), but flysystem remains the most flexible for raw filesystem operations.
- How do I configure flysystem to work with Google Cloud Storage (GCS) in Laravel?
- Use the `GoogleCloudStorageAdapter` from flysystem’s GCS package. Register it in Laravel’s `config/filesystems.php` with your GCS credentials and bucket name. The adapter follows the same interface as S3, so existing Laravel `Storage` code will work without changes.