Day 9: Auto-Purge Expired IRBM Tokens from Cache #irbsecurity

If you’re caching IRBM access tokens (as discussed in Day 2), it’s a good practice to periodically purge stale or unused entries to prevent clutter, reduce memory usage, and improve security.

✅ Why this matters:

• ✅ Prevents token bloat in Redis or cache
• ✅ Ensures expired tokens are not reused by accident
• ✅ Helps monitor token usage patterns

✅ Laravel Command to Clean IRBM Token Cache:

// app/Console/Commands/ClearIrbTokens.php
class ClearIrbTokens extends Command
{
    protected $signature = 'irb:clear-tokens';
    protected $description = 'Remove stale IRBM tokens from cache';

    public function handle()
    {
        Cache::forget('irb_access_token');
        $this->info('✅ IRBM access token cleared from cache.');
    }
}

✅ Schedule it:

// app/Console/Kernel.php
$schedule->command('irb:clear-tokens')->daily();

💡 Extra tips:

• Use tags like Cache::tags('irb')->put(...) if you want grouped invalidation
• Set token expiry to 3400 seconds as a buffer, not 3600
• Log each purge action for auditing

Coming up in Day 10:

We’ll build a developer debug view that shows the canonical XML, hashes, and signature structure in one glance for any invoice.