djangoproject

http://www.jaggedverge.com/2017/11/how-a-web-page-request-makes-it-down-to-the-metal/ How a web page request makes it down to the metal by : Janis Posted in : Tutorials, work-in-progess Tags : #NGINX, #Python No Comments The other day I was interested in how many steps occur between sending a #POST or #GET#request from a website to the actual processing that happens on the CPU of the #server. I figured that I knew bits and pieces of the puzzle but I wanted to see the complete path from the highest levels of abstraction all the way to the lowest without missing anything too big in-between. It turns out that in a modern web system there are a lot of steps. I have been really fascinated by this much like the explorer that wants to find a path from one known place to another. If you are interested in better understanding how your computer works you might find walking along this path with your tech stack helpful. Frontend prelude: GET request Browser page #rendering POST request sidenote: #CSRF#token Network stack sidenote: The Internet #TCP sidenote: more comprehensive treatment of network stack Backend Handling web request #WSGI #Django Django URL routing Django views Python implementations #CPython CPython bytecode CPython bytecode execution details Machine Code CPython to machine code Machine code execution Hardware implementation details Microcode Processor #pipeline Silicon implementation of addition Silicon adder unit AND gate Transistor

#AI#Artificial_Intelligence #AJAX #aiohttp #Anaconda #AngularJS #API #Atom #AWS #asyncio (#Asynchronous) #audio #automated_testing #automation #atexit #BeeWare #Big_Data #bitcoin #blockchain #Bluemix #Brython #button #Celery #client #class #classmethod #concurrency #Coroutine #cron #CSS #curl #data_analysis #data_mining #data_processing #database #Deep_Learning#deep_learning #Debian #decorator #deploy #dict #dispatch #django #django_cms #Django_REST_Framework #dropdownbox #Docker #event #Firefox #Flask #form #functions #Generator #GeoDjango #git #Google #GPU #GUI #Gym #host #HTML #httplib #learn #Image_processing #intelligence #input #Instagram #IOT #iPython #Jupyter #lambda #learn #License #Linux #lists #machine_learning #Magenta #map #Matplotlib #Metaprogramming #Micro_services #Micropython #mind #monitoring #MongoDB #modules #Mozilla #Multipart #multi_touch_apps #multiprocessing #Nodes #NoSQL #numeric_computation #numerical #NumPy #network #neural_network #OAuth #object_serialization #OCR #overloading #package #parallel #pipeline #protocols #PostGIS #pyAudioAnalysis #pycon #Pyflakes #PyInstaller #PyPI #PyQt #PySide #PyTorch #pytest #python #Pyvideo_archives #Qt #Raspberry_Pi #React #Redis #random #request #Regular_Expressions (#re) #REST #RSS #satellite #scikit_learn #SciPy #scrapy #searching #selectbox #Selenium #serialization #server #sessions #single_responsibility_principle #socket #Spark #str #submit #task #telegram #template #TensorFlow #test #text_boxes #text #tuples #unicode #Universe #Unix #unit_test #urllib #upload #uWSGI #Web #WSGI

#AI#Artificial_Intelligence #aiohttp #AngularJS #API #AWS #asyncio #audio #automated_testing #automation #atexit #BeeWare #button #client #concurrency #Coroutine #cron #curl #data_analysis #data_mining #data_processing #database #Deep_Learning #Debian #decorator #dict #dispatch #django #django_cms #dropdownbox #Docker #event #Firefox #form #Generator #GeoDjango #git #Google #GPU #Gym #learn #Image_processing #intelligence #input #IOT #lambda #learn #lists #machine_learning #Magenta #map #Metaprogramming #Micro_services #mind #monitoring #MongoDB #Mozilla #Multipart #multi_touch_apps #multiprocessing #Nodes #NoSQL #numeric_computation #numerical #NumPy #OAuth #object_serialization #OCR #overloading #package #parallel #pipeline #protocols #PostGIS #pyAudioAnalysis #pycon #Pyflakes #PyInstaller #PySide #PyTorch #pytest #python #Pyvideo_archives #Qt #React #Redis #random #request #REST #satellite #scrapy #scikit_learn #SciPy #searching #submit #selectbox #Selenium #serialization #server #socket #task #telegram #TensorFlow #test #text_boxes #text #tuples #unicode #Universe #Unix #urllib #upload #Web

https://github.com/aio-libs/aiohttp/blob/master/docs/web_reference.rst #Request and #BaseRequest The Request object contains all the information about an incoming HTTP request.

https://pypi.python.org/pypi/django-debug-toolbar A configurable set of panels that display various #debug information about the current #request/#response. The #Django_Debug_Toolbar is a configurable set of panels that display various debug information about the current request/response and when clicked, display more details about the panel’s content. Here’s a screenshot of the toolbar in action:

http://programtalk.com/vs2/python/9287/sempervirens/sempervirens/server.py/ This file is part of sempervirens #aiohttp#asyncio#learn#request

https://github.com/aio-libs/aiohttp/blob/master/docs/web_reference.rst Server Reference #asyncio#aiohttp#Request#BaseRequest#Server#client#Router#Resource

http://aiohttp.readthedocs.io/en/stable/web.html Server Usage Run a #Simple#Web#Server In order to implement a web server, first create a #request handler. A request handler is a #coroutine or regular function that accepts a Request instance as its only parameter and returns a Response instance.

http://aiohttp.readthedocs.io/en/stable/web.html#aiohttp-web-middlewares In order to implement a #web server, first create a #request handler. A request handler is a #coroutine or regular function that accepts a #Request instance as its only parameter and returns a Response instance: #aiohttp

#AI#Artificial_Intelligence #aiohttp #API #AWS #asyncio #audio #automated_testing #automation #atexit #BeeWare #button #client #concurrency #cron #Coroutine #data_analysis #data_mining #data_processing #database #Deep_Learning #Debian #decorator #dispatch #django #dropdownbox #Docker #event #Firefox #form #freeze #functool #Generator #GeoDjango #Google #GPU #Gym #learn #Image_processing #intelligence #input #IOT #lambda #lists #machine_learning #Magenta #map #Metaprogramming #Micro_services #mind #monitoring #MongoDB #Mozilla #Multipart #multi_touch_apps #multiprocessing #Nodes #NoSQL #numeric_computation #numerical #NumPy #OAuth #object_serialization #OCR #overloading #package #parallel #pipeline #protocols #PostGIS #pyAudioAnalysis #PyInstaller #PySide #PyTorch #pytest #python #Pyvideo_archives #Qt #Redis #random #request #REST #satellite #scrapy #scikit_learn #SciPy #searching #submit #selectbox #Selenium #serialization #server #session #socket #sound #task #TensorFlow #text_boxes #text #test #telegram #Thread #transport #tuples #Universe #Unix #urllib #upload #Web

http://aiohttp.readthedocs.io/en/stable/web.html#aiohttp-web-websockets In order to implement a #web_server, first create a #request handler. A request handler is a coroutine or regular function that accepts a Request instance as its only parameter and returns a Response instance: #aiohttp#asyncio from aiohttp import web async def hello(request): return web.Response(text="Hello, world") Next, create an Application instance and register the request handler with the application’s #router on a particular HTTP method and path:

https://blog.miguelgrinberg.com/post/designing-a-restful-api-with-python-and-flask In recent years #REST (REpresentational State Transfer) has emerged as the standard architectural design for #web services and web #APIs. In this article I'm going to show you how easy it is to create a RESTful web service using Python and the Flask microframework. What is REST? The characteristics of a REST system are defined by six design rules: Client-Server: There should be a separation between the #server that offers a service, and the #client that consumes it. Stateless: Each request from a client must contain all the information required by the server to carry out the #request. In other words, the server cannot store information provided by the client in one request and use it in another request. Cacheable: The server must indicate to the client if requests can be cached or not. Layered System: Communication between a client and a server should be standardized in such a way that allows intermediaries to respond to requests instead of the end server, without the client having to do anything different. Uniform Interface: The method of communication between a client and a server must be uniform. Code on demand: Servers can provide executable code or scripts for clients to execute in their context. This constraint is the only one that is optional.