Simple codable on disk cache implementation

DiskCache.swift

class AnyDiskCache {
    static func invalidate(name: String) throws {
        let manager = FileManager.default
        let urls = manager.urls(for: .cachesDirectory, in: .userDomainMask)
        let url = urls[0].appendingPathComponent(name + ".cache")
        try manager.removeItem(at: url)
    }
}

final class DiskCache<T: Codable>: AnyDiskCache {
    func save(object: T, name: String) throws {
        // Preventing caching empty arrays
        if let collection = object as? Array<T>, collection.isEmpty {
            return
        }
        
        let urls = FileManager.default.urls(for: .cachesDirectory, in: .userDomainMask)
        let url = urls[0].appendingPathComponent(name + ".cache")
        
        guard let data = try? JSONEncoder().encode(object) else { return }
        try data.write(to: url)
    }
    
    func retrieve(name: String) throws -> T?  {
        let urls = FileManager.default.urls(for: .cachesDirectory, in: .userDomainMask)
        let url = urls[0].appendingPathComponent(name + ".cache")
        guard let data = try? Data(contentsOf: url) else { return nil }
        return try JSONDecoder().decode(T.self, from: data)
    }
}