Laravel Sessions & Middleware

Priority: P1 (HIGH)

Workflow: Secure Sessions & Add Middleware

1. Set Redis driver — SESSION_DRIVER=redis in .env; install predis/predis.
2. Regenerate on login — Call $request->session()->regenerate() after authentication.
3. Create security middleware — Add HSTS, CSP, X-Frame-Options, and X-Content-Type-Options headers.
4. Register globally — Use withMiddleware(fn($m) => $m->append(...)) in bootstrap/app.php.

Security Headers Middleware Example

See implementation examples for security headers middleware and directory structure.

Implementation Guidelines

Session Architecture

• Drivers: Set SESSION_DRIVER=redis in .env for production/scaled environments.
• Dependencies: Install predis/predis and avoid file driver due to I/O lock issues at scale.
• Security: Call $request->session()->regenerate() after successful authentication to prevent session fixation. Call $request->session()->invalidate() on logout.
• Access: Never access env('SESSION_DRIVER') directly in code; always use config('session.driver'). Clear caches via php artisan config:clear.

Middleware Pipeline

• Custom Middleware: Use php artisan make:middleware EnsureTokenIsValid. Implement handle(Request $request, Closure $next): Response.
• Registration: Register new middleware in bootstrap/app.php using withMiddleware().
• Security Headers: Standardize HSTS, CSP, X-Frame-Options, and X-Content-Type-Options in dedicated security middleware. Register as global middleware.
• Priority: Use withMiddleware(fn($m) => $m->append(MyMiddleware::class)) or prepend() for highest priority.
• Performance: Avoid heavy computation in global middleware; delegate these to domain services.

Anti-Patterns

• No file session driver in production: Use Redis or Memcached instead.
• No env() for session config: Use config('session.*') instead.
• No heavy logic in Middleware: Delegate complex logic to Services.
• No sensitive data in cookies: Store securely in server sessions only.

References

• Advanced Middleware Patterns

Middleware performance checklist

• File sessions create I/O and locking problems at scale; prefer a production session backend and keep global middleware cheap and deterministic.

Canonical response anchors

When this skill applies, preserve the following domain terminology or equivalent concrete examples in the answer when relevant:

• avoids file-session I/O,locking problems,scaled production
• cheap and deterministic,Keep the middleware lightweight
• CSP
• prepend()
• session fixation
• withMiddleware()