One Goal
To build xxx API .
- Sustainable
- Scalable
Environment
APP
Routers
看起來明顯分成兩大不同陣營
- wsgi
- asgi
WSGI
一開始為了將Server Code/Application Code 做區隔. Web Server Gateway interface相應而生.
- WSGI Framework:
- Django
- Flask
- WSGI Servers
- gunicorn
- uWSGI
WSGI limitation
- Web Socket並沒有被官方支援
- 沒有支援async/await
ASGI
Django channel 是一開始推動這個問題得library.
API gateway
NGINX, Web server, load balancer, reverse proxy
Heroku
Heroku CLI
Terminologies
- websocket
The WebSocket API is an advanced technology that makes it possible to open a two-way interactive communication session between the user’s browser and a server. With this API, you can send messages to a server and receive event-driven responses without having to poll the server for a reply.
兩個關鍵字. Poll/two-way. Restful API 是無法達成這樣的功能. 如果User需要某個資料, user需要一直去詢問亦即polling. Two-way: 在單一封包中沒法兼顧聽和說這件事. (有些用Duplex)
