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MagicStack/uvloop

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Uvloop

uvloop is a high-performance replacement for the standard Python event loop. It functions as a drop-in substitute designed to accelerate asynchronous networking tasks and reduce latency in event-driven software systems.

The project achieves its performance characteristics by utilizing a Cython-based extension module that wraps the libuv C library. By leveraging low-level system calls for event-driven input and output multiplexing, it manages concurrent network requests and subprocess execution with minimal overhead.

The implementation supports scalable backend service development by handling large volumes of simultaneous connections and data streams. It incorporates zero-copy buffer management to minimize memory overhead during data transfer between the network stack and the application layer.

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Features

  • Event Loop Replacements - Functions as a high-performance, drop-in replacement for the standard Python event loop.
  • High-Performance Networking - Accelerates network-heavy applications by replacing the standard event loop with a high-performance implementation.
  • Networking Libraries - Acts as a drop-in networking library replacement that leverages low-level system calls for improved speed.
  • Asynchronous Event Loops - Optimizes asynchronous event loop execution to increase speed and reduce latency in network-heavy applications.
  • Asynchronous Task Managers - Coordinates concurrent background operations and non-blocking task execution within a single-threaded event loop.
  • Event-Driven I/O - Utilizes event notification loops to handle high-concurrency network connections without blocking the main thread.
  • Alternative Loops - High-performance event loop implementation based on libuv.
  • Asynchronous Programming - High-performance drop-in replacement for the standard asyncio event loop.
  • Concurrency and Parallelism - High-performance event loop implementation.
  • Asynchronous Network Frameworks - Provides a foundational library for building event-driven network servers and clients.
  • Event Loop Backends - Wraps high-performance C libraries to provide the underlying engine for asynchronous I/O operations.
  • High-Concurrency Backends - Supports building high-concurrency backend services that handle large volumes of simultaneous connections.
  • Zero-Copy Buffers - Minimizes memory overhead by reusing buffers for high-concurrency network data structures.
  • Extension Compilers - Compiles performance-critical logic into binary extension modules to bypass interpreter overhead.
  • Asynchronous Task Execution - Provides mechanisms for executing non-blocking background network requests and subprocesses.
11,817 stars·609 forks·Cython·Apache-2.0·19 views

Star history

Star history chart for magicstack/uvloopStar history chart for magicstack/uvloop

How this analysis was created: This summary and feature list are AI-generated from collected project material and can contain mistakes. Stars, license and language are imported from GitHub. Inclusion does not mean that we have tested or audited this project. Check the source documentation for any feature you depend on. Learn more on our About page.

Frequently asked questions

What does magicstack/uvloop do?

uvloop is a high-performance replacement for the standard Python event loop. It functions as a drop-in substitute designed to accelerate asynchronous networking tasks and reduce latency in event-driven software systems.

What are the main features of magicstack/uvloop?

The main features of magicstack/uvloop are: Event Loop Replacements, High-Performance Networking, Networking Libraries, Asynchronous Event Loops, Asynchronous Task Managers, Event-Driven I/O, Alternative Loops, Asynchronous Programming.

Which projects share features with magicstack/uvloop?

Projects with overlapping indexed features include: gevent/gevent — Gevent is a Python coroutine concurrency library and asynchronous task manager designed for high-concurrency I/O… netty/netty — Netty is an asynchronous network framework designed for building scalable protocol servers and clients. It utilizes an… squeaky-pl/japronto — Japronto is an asynchronous web framework and Python HTTP server toolkit. It functions as a multi-worker HTTP server… qihoo360/evpp — evpp is a C++ network library and framework designed for building high-performance network services using TCP, UDP,… reactphp/reactphp — ReactPHP is an asynchronous runtime and event-driven I/O framework for PHP. It provides an environment for executing… ithewei/libhv — libhv is a high-performance C/C++ network library and event-driven I/O framework used to build TCP, UDP, SSL, HTTP,…

Projects sharing features with Uvloop

These projects share indexed features with Uvloop. Shared tags can include platform or build tooling; verify the primary use case before treating a result as a replacement.
  • gevent/geventgevent avatar

    gevent/gevent

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    Gevent is a Python coroutine concurrency library and asynchronous task manager designed for high-concurrency I/O tasks. It provides a cooperative networking framework for building asynchronous TCP, UDP, and HTTP servers, as well as a WSGI web server implementation for hosting web applications. The project is distinguished by its standard library monkey-patching tool, which replaces blocking synchronous functions with cooperative versions to enable asynchronous behavior in third-party code. This allows for a cooperative multitasking workflow where the system yields execution during I/O waits t

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  • netty/nettynetty avatar

    netty/netty

    34,975View on GitHub↗

    Netty is an asynchronous network framework designed for building scalable protocol servers and clients. It utilizes an event-driven reactor pattern and a non-blocking input/output model to decouple connection handling from application logic, allowing for the development of responsive network services that manage high volumes of concurrent connections. The framework distinguishes itself through a modular pipeline-based processing chain that enables the implementation of custom binary or text-based protocols. It provides a pluggable transport abstraction that allows developers to switch between

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  • qihoo360/evppQihoo360 avatar

    Qihoo360/evpp

    3,767View on GitHub↗

    evpp is a C++ network library and framework designed for building high-performance network services using TCP, UDP, and HTTP protocols. It provides an asynchronous event loop to manage nonblocking I/O operations and concurrent network connections across multiple threads. The framework includes specialized tools for asynchronous DNS resolution and a system for asynchronous task scheduling using a managed thread pool. It also features a nonblocking HTTP server and client with integrated connection pooling. The project covers low-level transport layer connectivity for TCP and UDP, as well as hi

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  • squeaky-pl/japrontosqueaky-pl avatar

    squeaky-pl/japronto

    8,540View on GitHub↗

    Japronto is an asynchronous web framework and Python HTTP server toolkit. It functions as a multi-worker HTTP server and request router, utilizing non-blocking asynchronous handlers to manage high concurrency and throughput. The project implements a master-multiworker forking model to distribute network traffic across multiple CPU cores. It incorporates a fast event loop and a specialized C-extension for high-speed HTTP request parsing, while supporting request pipelining over single TCP connections. The framework covers a broad range of request handling capabilities, including URL pattern r

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