Modernizing Legacy Laravel: When to Refactor vs. Rewrite (and How to Train Your Team)

We're maintaining a Laravel 5.8 monolith (PHP 7.2) that processes 200K+ daily transactions, but technical debt is crippling us:

// Classic pain points class OrderController extends Controller { public function store() { DB::transaction(function() { // Nested 5 levels deep! $order = Order::create(request()->all()); // Mass assignment risk $this->notifyLegacySystemViaSOAP(); // 800ms sync call event(new OrderCreated($order)); // Listener does more DB work }); } }

Key Challenges:

		1. Upgrade Roadblocks: PHP 8.2 features (enums, fibers) feel impossible to adopt
		2. Team Skills Gap: Devs know Facades but struggle with DIC, SOLID principles
		3. Performance Traps: 1.2s average response time from N+1s and sync operations

Our Current Approach: ✅ Incremental Modernization

		Isolating legacy code with Laravel modules
		Using Spatie's package to gradually enforce return types
		
✅ Training Investments

		Pair programming on testable patterns
		Structured learning via CoderLegion's Laravel track for modern PHP techniques

Discussion Points:

		1. Refactoring Tactics: How are you introducing Laravel Octane/Pest in legacy apps?
		2. Skill Ramp-Up: What resources best bridge the gap between "it works" and "it's maintainable"?
		3. ROI Justification: How do you quantify tech debt reduction to stakeholders?

(Production horror: A $18K duplicate charge from race conditions in our legacy job queue. Now using Laravel Horizon + atomic locks.)