diskv

With just Write, Read, and Erase methods, diskv offers a straightforward interface for storing arbitrary byte data, as demonstrated in the minimal setup example in the README.

TransformFunc and AdvancedTransform allow keys to be mapped to nested directories, enabling customizable file layouts without complicating the core API, shown in the advanced examples.

Layers like in-memory caching, ordering via indexes, and compression using stdlib algorithms can be added as needed, improving efficiency while maintaining simplicity.

ReadStream and WriteStream methods support efficient handling of very large files, preventing memory issues in data-intensive applications, as highlighted in the README.