Asynchroniczne ASP.NET

Marcin Daczkowski, AIS.PL

I/O ThreadsIOCP

Queue

WorkerThreads

RequestQueue

AppDomain #1

AppDomain #2

AppDomain #3

Worker process (aspnet_wp.exe / w3wp.exe)

WorkerThreads AppDomain

Database

Web Service

External Devices

Thread pooldepleted

Worker threads waiting for I/O operations to complete

OtherRequests

PreInit

Init

PreRender

PreRenderComplete

Normal page lifecycle

Render

InitComplete

PreLoad

LoadComplete

Load

SaveState

SaveStateComplete

PreInit

Init

PreRender

PreRenderComplete

Render

InitComplete

PreLoad

LoadComplete

Load

SaveState

SaveStateComplete

Async page lifecycle

End

BeginAsync I/O

AddOnPreRenderCompleteAsync

RegisterAsyncTask

HTTP.SYS (KERNEL MODE)

WORKER PROCESS (W3WP.EXE)

Session HTTP Module

ASMX

HTTP Hadl

er

ASP.NET

HTTP Hadl

er

Cache HTTP Module

Forms Auth HTTP Module

…

…Custo

m

HTTP Hadl

er

IIS

Dete

rmin

e IIS

handle

rStatic

ASP.NETISAPI

CGI