Introduction to Gevent
summary
Gevent is a C-extension networking library that gives cooperative greenlets over an event loop; version 1.0 replaces libevent with libev, uses c-extensions for fast context switching, and provides monkey patching of the stdlib so existing blocking code becomes cooperative. Examples: asynchronous DNS via c-ares, stream server + pool, timeouts, and inability to preempt CPU-bound code. Benchmarks show about 60,000 switches/sec, and real users scale single processes to roughly 10,000 connections successfully.
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chapters (17)
- 0:00Introduction
- 0:29What is Gevent
- 3:48Blocking sockets vs async I/O
- 6:58Threading and event loops
- 8:44Coroutines and types
- 10:52Coroutine switching
- 13:03Gevent’s event loop
- 14:28The Hub and sleep
- 16:13Monkey patching
- 18:27Greenlet class and timeouts
- 20:18Greenlet pools
- 21:20Async communication tools
- 22:23Gevent HTTP server
- 23:31Database drivers
- 24:40Real-world use case
- 25:43Summary and future plans
- 26:04Q&A
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