Gevent
gevent is a Python networking library built on top of libev event loop. It provides a high-level synchronous API on top of libev's asynchronous event loop, making it easier to write non-blocking network applications in Python.
networking
async
event-loop
nonblocking
gevent: High-Level Synchronous Networking Library for Python
A Python networking library built on top of libev event loop, providing a synchronous API for non-blocking network applications.
What is Gevent?
gevent is a Python networking library that provides a high-level synchronous API on top of libev's asynchronous event loop. This allows developers to write non-blocking network applications in Python using a synchronous coding style.
Some key features of gevent include:
- Fast event loop based on libev
- Lightweight execution units (greenlets) to provide pseudo-concurrency
- API that resembles the Python standard library (threading, socket, ssl etc)
- Cooperative sockets with ssl support
- Ability to handle thousands of concurrent connections
- DNS queries performed through c-ares asynchronous library
- Monkey patching utility to get 3rd party libraries to become gevent-friendly
gevent is useful for writing high-performance networking apps like web servers, application servers, DNS servers, database proxies etc. It allows handling many concurrent connections easily with pseudothreads while scaling well without needing true multi-threading. Many major Python apps and frameworks use gevent internally like gevent, gunicorn, eventlet etc.
Gevent Features
Features
- Coroutine-based concurrency
- Fast event loop based on libev
- Lightweight execution units
- API that reuses concepts from the Python standard library
- Cooperative multitasking
Pricing
- Open Source
Pros
High performance
Easy to use API
Integrates well with existing Python code
Allows blocking calls to be non-blocking
Built-in support for common network protocols
Cons
Complex concurrency model
Debugging can be difficult
Requires application code to be written asynchronously
Not compatible with all Python libraries
Official Links
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Top Development and Networking & Async Io and other similar apps like Gevent
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