afero
A filesystem abstraction library for Go that provides a universal interface for local, in-memory, cloud, and archive backends.
What is afero?
Afero is a filesystem abstraction library for Go that provides a universal interface for interacting with various storage backends. It solves the problem of tightly coupling application code to the operating system's filesystem, making it difficult to test and port across different environments. By abstracting filesystem operations, Afero enables developers to write backend-agnostic code that can seamlessly switch between local disk, in-memory storage, cloud services, or archives.
Go developers building applications that interact with filesystems and need improved testability, portability across storage backends, or advanced filesystem composition features. It's particularly valuable for those writing CLI tools, web servers, data processors, or any software requiring flexible storage layers.
Developers choose Afero because it offers a drop-in replacement for Go's standard `os` package with minimal code changes, provides unparalleled testability through its in-memory filesystem, and enables powerful filesystem composition patterns not available in the standard library. Its compatibility with `io/fs` and extensive ecosystem of third-party backends make it a versatile choice for modern Go applications.
Overview
The Universal Filesystem Abstraction for Go
Use Cases
Best For
Related Projects
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