asyncio stack for web-development
0 likes788 views
This document discusses tools and techniques for building web applications using asyncio in Python. It provides an overview of popular asyncio-compatible database drivers, the SQLAlchemy ORM, session handling with aiohttp_session, authentication with aiohttp_security, and client libraries like aiohttp. It also covers debugging, testing, deployment with Gunicorn, and resources for further learning about asyncio and asynchronous Python web development.
![Benchmark [1]
3](https://image.slidesharecdn.com/asynciostackforweb-dev-160730091618/85/asyncio-stack-for-web-development-3-320.jpg)
![Mongo? [2]
8](https://image.slidesharecdn.com/asynciostackforweb-dev-160730091618/85/asyncio-stack-for-web-development-8-320.jpg)
![Web-sockets [3]
21](https://image.slidesharecdn.com/asynciostackforweb-dev-160730091618/85/asyncio-stack-for-web-development-21-320.jpg)
![aiohttp client [4]
24](https://image.slidesharecdn.com/asynciostackforweb-dev-160730091618/85/asyncio-stack-for-web-development-24-320.jpg)
![Other tools [5]
● aiohttp_runserver
● aiohttp_cors
● aiohttp_traversal
● aiothrottle
● aiohttp_mako
● and more ...
27](https://image.slidesharecdn.com/asynciostackforweb-dev-160730091618/85/asyncio-stack-for-web-development-27-320.jpg)
![Debug
$ Task was destroyed but it is pending!
task: <Task pending coro=<fetch_bad() running at demo.py:
14> wait_for=<Future pending cb=[Task._wakeup(),
BaseSelectorEventLoop._sock_connect_done(10)()]>>
30](https://image.slidesharecdn.com/asynciostackforweb-dev-160730091618/85/asyncio-stack-for-web-development-30-320.jpg)
![Debug
$ ConnectionResetError: [Errno 54] Connect call failed
('127.0.0.1', 8080)
$ OSError: [Errno 24] Too many open files
31](https://image.slidesharecdn.com/asynciostackforweb-dev-160730091618/85/asyncio-stack-for-web-development-31-320.jpg)
![Testing [6]
35](https://image.slidesharecdn.com/asynciostackforweb-dev-160730091618/85/asyncio-stack-for-web-development-35-320.jpg)
![Let’s have some fun!
my-mail [ at ] gmail [ dot ] com
41](https://image.slidesharecdn.com/asynciostackforweb-dev-160730091618/85/asyncio-stack-for-web-development-41-320.jpg)
asyncio stack for web-development
- 1. asyncio-stack for web- development Misha Behersky
- 2. About Python developer @ DataRobot 2
- 4. Benchmark 4
- 5. Database drivers ● aiocouchdb ● aiomysql ● aioredis ● aiozmq ● aioes ● aiopg ● aiokafka ● aioodbc ● aiomcache 5
- 6. SQLAlchemy 6
- 7. Faster postgre client? $ pip install asyncpg 7
- 8. Mongo? [2] 8
- 11. aiohttp_debugtoolbar $ pip install aiohttp_debugtoolbar 11
- 15. aiohttp_session ● SimpleCookieStorage ● EncryptedCookieStorage ● RedisStorage 15
- 17. aiohttp_security ● AbstractIdentityPolicy ● AbstractAuthorizationPolicy ● remember() ● forget() ● authorized_userid() ● permits() 17
- 20. Slowloris $ nmap --script http-slowloris-check 127.0.0.1 -p 8080 20
- 22. Middleware 22
- 23. Middleware 23
- 25. aiohttp_admin 25
- 26. aiohttp_admin 26
- 27. Other tools [5] ● aiohttp_runserver ● aiohttp_cors ● aiohttp_traversal ● aiothrottle ● aiohttp_mako ● and more ... 27
- 29. Debug $ export PYTHONASYNCIODEBUG=1 ● explicit loop ● releasing resources ● awaititng coroutines $ python script.py -Wdefault 29
- 30. Debug $ Task was destroyed but it is pending! task: <Task pending coro=<fetch_bad() running at demo.py: 14> wait_for=<Future pending cb=[Task._wakeup(), BaseSelectorEventLoop._sock_connect_done(10)()]>> 30
- 31. Debug $ ConnectionResetError: [Errno 54] Connect call failed ('127.0.0.1', 8080) $ OSError: [Errno 24] Too many open files 31
- 32. Debug 32
- 33. Testing 33
- 34. Testing 34
- 35. Testing [6] 35
- 36. Go production! $ gunicorn app_module:app --bind localhost:8080 --worker-class aiohttp.worker.GunicornWebWorker 36
- 39. Resources 1. klen.github.io/py-frameworks-bench/ 2. emptysqua.re/blog/ 3. igordavydenko.com/talks/lvivpy-5/ 4. pawelmhm.github.io/asyncio/python/aiohttp/2016/04/22/asyncio-aiohttp.html 5. github.com/python/asyncio/wiki/ThirdParty 6. asvetlov.github.io/pytest-slides/ 7. http://www.slideshare.net/mariczhuck/ 39
- 40. Thanks for your attention https://github.com/kpidata/webcamp16 [email protected] @bmwant bmwlog.pp.ua 40
- 41. Let’s have some fun! my-mail [ at ] gmail [ dot ] com 41