IIS
Getting both FastCGI module and AppPool CPULimit to work
Jul 2nd
FastCGI module available in IIS 7.0 did not work when CPULimit for the application pool was enabled. This was because when CPULimit feature was enabled WAS uses job objects to track CPU usage of worker processes. WAS keeps a job object for each application pool and all worker processes which belong to that application pool are made part of that job object. FastCGI module uses job objects to make sure that there are no orphan child processes left when worker process goes away. Note that FastCGI requires a per process job object while WAS requires a per application pool job object. For this reason, it was not possible to make WAS take care of killing FastCGI child processes when worker process dies.
FastCGI ISAPI 1.5 Beta for WinXP and Win2K3
Apr 20th
IIS team today released FastCGI ISAPI 1.5 Beta for WinXP and Win2K3 which has some very nice additions to existing FastCGI ISAPI functionality. Following additions have been made to FastCGI ISAPI 1.0.
Using advanced logging to log custom module data
Apr 18th
Advanced logging module which media team released few days ago uses IIS tracing subsystem and allow module developers to log custom data in W3C compatible format using familiar IHttpTraceContext interface. If you are a module developer and want to generate W3C style logs for requests with custom data, doing it with advanced logging module is very easy. All you need to do is call IHttpTraceContext::RaiseTraceEvent passing data you want to publish. Your module installer can then configure advanced logging module to make it dump this data in a log file and you have complete logging solution without ever have to deal with log files yourself. Let’s see what it takes to make use of this functionality.
Implementing IAppHostPathMapper in C
Apr 18th
Few days ago I was required to implement IAppHostPathMapper interface in native C to map configuration path MACHINE/WEBROOT/APPHOST to DefaultAppPool.config and struggled with finding good documentation. With help of some incomplete, hard to find documentation and some head banging here is what worked for me.
New features in configuration system and appcmd in IIS 7.5
Mar 25th
Following new features have been added to IIS configuration system and appcmd command line tool in IIS 7.5.
Configuration System
1. Configuration system tracing and logging
IIS 7.5 updates to custom errors and compression
Feb 16th
Looking at number of people reaching my first blog post while searching for information on IIS 7.5, I figured I should do few more posts on changes which are coming in IIS 7.5. In this blog post I am covering new features which have been added to compression and custom errors modules in IIS 7.5.
Changes to custom errors
Improvements to FastCGI in IIS 7.5
Jan 22nd
Following improvements have been made to FastCGI module in Win7 (and Win2K8 R2).
1. Monitor changes to a file
We have added ability to monitor changes to a file for each FastCGI process pool. Module will recycle FastCGI processes for the process pool if a change to the file is detected.