FixIO

FixIO is an open-source cross-language input/output abstraction and fault-tolerant I/O library designed to unify and stabilize low-level I/O across platforms and runtimes. It provides a uniform API for file, network, and device streams with built-in resilience features, such as automatic retries, exponential backoff, idempotent writes, and backpressure-aware streaming.

Origin and scope: The project was started in 2019 by developers seeking to reduce fragmentation in I/O ecosystems. It aims to be a minimal core with language bindings rather than a monolithic runtime.

Architecture and features: The core is implemented in a lower-level language with bindings to high-level languages (Python, JavaScript, C++, Rust, Go). The design uses modular backends for OS facilities and transport protocols, a policy-driven error handling layer, and a stream processing API supporting asynchronous and synchronous modes. Common primitives include open, read, write, close, and control operations; channels, buffers, and backpressure abstractions are provided.

Usage and compatibility: FixIO integrates with popular runtimes such as asyncio, Tokio, and libuv-based loops. It targets major platforms (Linux, Windows, macOS) and supports both blocking and non-blocking I/O.

Reception and impact: It has been adopted by several open-source projects for cross-language I/O needs; criticisms mention a learning curve and some overhead compared to platform-specific backends.

See also: libuv, Boost.Asio, asyncio, and I/O.