Shared Cache Lock Store Analyzer

Analyzer ID	Category	Severity	Time To Fix
shared-cache-lock	⚡ Performance	Low	20 minutes

What This Checks

Validates that atomic locks use a shared backend (Redis/Memcached) in load-balanced environments.

Why It Matters

• Reliability: File-based locks only work on single servers
• Data Integrity: Distributed locks prevent race conditions
• Concurrency: Ensures mutual exclusion across servers

File locks don't work across multiple servers, allowing concurrent operations that should be mutually exclusive.

How to Fix

Proper Fix (20 minutes)

Configure Lock Store:

// config/cache.php
'stores' => [
    'redis' => [
        'driver' => 'redis',
        'connection' => 'cache',
        'lock_connection' => 'default',
    ],
],

Usage:

use Illuminate\Support\Facades\Cache;

Cache::lock('process-invoice')->get(function () {
    // Critical section
});

References

• Laravel Atomic Locks

Related Analyzers

• Cache Driver Configuration Analyzer - Ensures a proper cache driver configuration for optimal performance