Is it necessary to manually cache user permissions when using Spatie Laravel Permission?

No, it is generally not necessary to manually cache user-specific permissions when using the Spatie Laravel Permission package.

Here's why:

• The package already implements its own caching layer for roles and permissions via the spatie.permission.cache config. This cache is used when checking permissions and roles, so repeated checks do not hit the database every time.
• When you call $user->can('some-permission'), Spatie's package efficiently checks the cached permissions for the user, not the database.
• The cache is automatically invalidated when you assign or remove roles/permissions.

Manual user-specific caching (like user:{id}:permissions) is usually unnecessary and can introduce complexity:

• You'd have to manage cache invalidation yourself whenever permissions or roles change.
• You risk serving stale permission data if you forget to clear/update the cache.

Best Practices:

• Rely on Spatie's built-in cache unless you have a very unique use case with extreme performance requirements and have profiled a real bottleneck.
• If you do need custom caching, ensure you handle cache invalidation whenever permissions or roles are updated.

References:

• Spatie Laravel Permission Docs: Caching
• Source code for permission checks

Summary:
Stick with Spatie's built-in caching. Manual user-specific permission caching is not recommended or necessary in most cases.