How To Prepare For A Laravel Interview

Senior Laravel interviews do not just test your knowledge of syntax. They test your ability to design scalable systems and handle real-world trade-offs.

You must move past basic CRUD operations. You need to prove you can ship software at scale.

Use this study plan based on your available time.

  • 1 to 2 days: Focus on the Request Lifecycle, Eloquent N+1 problems, Queues, Validation, and Authorization.
  • 3 to 5 days: Add Caching, Database Transactions, Testing, and API Design.
  • 6 to 10 days: Study everything. Build a small project using queues, events, jobs, and policies.

Key Technical Areas to Master:

The Service Container Know the difference between these three: • bind(): Returns a new instance every time. • singleton(): Returns the same instance for the whole process. • scoped(): Returns one instance per request. This is vital for tools like Laravel Octane.

Eloquent and Databases Stop using all() on large tables. Use chunk() or lazyById() to manage memory. Understand N+1 problems. Use eager loading (with) to fix them. Know when to use Eloquent versus the Query Builder. Use the Query Builder for heavy reporting to avoid model overhead.

Queues and Background Processing Anything slow or unreliable belongs in a queue. Use Redis for production queues. Use Laravel Horizon to monitor your workers and failed jobs. When passing data to jobs, pass IDs instead of full model objects to avoid stale data.

Security and Architecture Do not use $request->all() for mass assignment. Use $request->validated(). Understand the difference between Sanctum (for SPAs and simple tokens) and Passport (for full OAuth2). Keep your controllers thin. Move business logic into Services or Actions.

The Senior Signal A junior developer knows how to use a tool. A senior developer knows why they chose that tool over another.

In your interview, do not just give an answer. Explain the trade-offs. Compare the pros and cons of different approaches. This shows you understand the impact of your technical decisions on the business.

Source: https://dev.to/nazar_boyko/how-to-prepare-for-a-laravel-interview-8dn