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  • What is Apache process model?

    - by Morgan Cheng
    I have been googling this question for some time but got no answers. What's the Apache process model? By process model, I mean how Apache manage process or thread to handling HTTP request. Does it fork one process for each HTTP request? Does it have process/thread pool? Can we config it? Is there any online doc for such Apache details?

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  • In sync query calls, one query causing other query to run slower. Why?

    - by Irchi
    Sorry for the long question, but I think this is an interesting situation and I couldn't find any explanations for it: I was involved in optimization of an application that performed a large number of sequential SELECT and INSERT statements on a single dedicated SQL Server database. The process needs to INSERT a large number of records into a table, but for each of them there should be some value mappings, which performed using SELECT statements on another table in the same database. For a specific execution, it took 90 minutes to run. I used a profiler (JProfiler - the application is Java-based) to determine how much time does each part of the application take. It yields that 60% of the time was spent on INSERT method calls, and almost 20% on SELECT calls (the rest distributed in other parts). After some trials, I came to this situation: I commented out the INSERT query that took 60% of the time. I was expecting for the total run time to be around 35 minutes, as I have removed 60% of the 90 minutes. But the whole process took the same 90 minutes (doing only SELECTs and nothing else), but each SELECT took longer this time! Everything was running sync, there were no async calls. And there was only one single thread of execution. SELECT and INSERT queries are very simple, and don't have anything special, and they are on different tables, but on the same DB. I tested with both the DB on the application machine, and on a remote network machine. I can't think of any explanation for this, as the Profiler (Application profiler, not SQL Profiler) reported the changes in the method call times, and by removing INSERT statements SELECT statements took longer to run. Can anyone give me some kind of explanation of what could have happened? (there can't be cache / query optimization stuff, because the queries were run in sync, and in a single thread, and it was far from affecting the cache this much) I should note that the bottleneck of the speed was in SQL server, using most of the CPU time.

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  • Switching 2003 SRV to 2008 caused Asp.net application not to Import Dll

    - by Tom
    Switching aged 2003 SRV to 2008 caused my Asp.net 2 application fail: The application is no more loading the required library DLL from /bin/ folder anymore. What should I change in my code or web.config to make this webapp load OK also in new 2008 server? Now I receive this error when I access the application: This type is in IMPORTS ( Dll ). Compiler Error Message: BC30002: Type 'Facebook.Entity.User' is not defined.

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  • PROBLEMS IN INSTALLATION OF JOOMLA

    - by anwar
    Hi there everyone im a newbie so can anyone of u help me solve this problem im having in the installation of joomla when im clicking joomla folder for installing it is giving the message: Unable to open WampServer's config file, please change path in index.php file so plz help me to solve this issue coz index.php is in some different lang thanks in advance

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  • Zend Framework 1.1 Modules setup

    - by jiewmeng
    i used zend_tool to setup a project then to create module blog with index controller etc but i guess the default config setup by zend_tool does not work with modules so i edited it resources.frontController.moduleDirectory = APPLICATION_PATH "/modules" resources.frontController.moduleDirectoryControllerName = "controllers" i guess these are required for modules? also i moved the folders, controllers, models, views into the modules/ folder but i get a blank screen when i try to go to http://servername which shld load Default module's index controller and action. even if i try to go http://servername/nonexistentpage it also shows a blank screen instead of a 404

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  • Does grails support logging from the src/java classes?

    - by rainyday
    I have a grails app (v 1.1.2) the logging is working fine from the groovy classes, but I can't get it to work from within a java source... I have a class in package com.mforms.devices., it imports apache log4j, defines the logger as follows private final org.apache.log4j.Logger loggy = Logger.getLogger(this.getClass()); then refer to it later by doing loggy.error("...") my Config.groovy has the following log4j = { error 'com.mforms' root { error 'stdout', 'file' additivity = true } } What am I doing wrong?!?!

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  • C++: What is the size of an object of an empty class?

    - by Ashwin
    I was wondering what could be the size of an object of an empty class. It surely could not be 0 bytes since it should be possible to reference and point to it like any other object. But, how big is such an object? I used this small program: #include <iostream> using namespace std; class Empty {}; int main() { Empty e; cerr << sizeof(e) << endl; return 0; } The output I got on both Visual C++ and Cygwin-g++ compilers was 1 byte! This was a little surprising to me since I was expecting it to be of the size of the machine word (32 bits or 4 bytes). Can anyone explain why the size of 1 byte? Why not 4 bytes? Is this dependent on compiler or the machine too? Also, can someone give a more cogent reason for why an empty class object will not be of size 0 bytes?

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  • IIS7 URL Redirect with Regex

    - by andyjv
    I'm preparing for a major overhaul of our shopping cart, which is going to completely change how the urls are structured. For what its worth, this is for Magento 1.7. An example URL would be: {domain}/item/sub-domain/sub-sub-domain-5-16-7-16-/8083770?plpver=98&categid=1027&prodid=8090&origin=keyword and redirect it to {domain}/catalogsearch/result/?q=8083710 My web.config is: <?xml version="1.0" encoding="UTF-8"?> <configuration> <system.webServer> <rewrite> <rules> <rule name="Magento Required" stopProcessing="false"> <match url=".*" ignoreCase="false" /> <conditions> <add input="{URL}" pattern="^/(media|skin|js)/" ignoreCase="false" negate="true" /> <add input="{REQUEST_FILENAME}" matchType="IsFile" negate="true" /> <add input="{REQUEST_FILENAME}" matchType="IsDirectory" negate="true" /> </conditions> <action type="Rewrite" url="index.php" /> </rule> <rule name="Item Redirect" stopProcessing="true"> <match url="^item/([_\-a-zA-Z0-9]+)/([_\-a-zA-Z0-9]+)/([_\-a-zA-Z0-9]+)(\?.*)" /> <action type="Redirect" url="catalogsearch/result/?q={R:3}" appendQueryString="true" redirectType="Permanent" /> <conditions trackAllCaptures="true"> </conditions> </rule> </rules> </rewrite> <httpProtocol allowKeepAlive="false" /> <caching enabled="false" /> <urlCompression doDynamicCompression="true" /> </system.webServer> </configuration> Right now it seems the redirect is completely ignored, even though in the IIS GUI the sample url passes the regex test. Is there a better way to redirect or is there something wrong with my web.config?

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  • Framework or CMS for php web development?

    - by rocknroll
    Hi all, I am a C++,Unix developer who has never dabbled in web development apart from creating simple HTML pages. I am going to change that and develop a website at a personal level soon. I am going to use php,mysql on a linux machine. In this regard I am browsing through relevant literature. The language isn't a problem but reading about CMS's and frameworks is confusing. And since I am new to web development, the number of CMS's and Frameworks are overwhelming. ? My question is do I need to have knowledge of one or more CMS' and/or Frameworks like Drupal,Joomla,Zend,Wordpress etc. If yes which is the best open source CMS' and/or Framework suggested for a newbie. ?? If the answer to the above question is yes, does the choice changes if one delves into the realms of commercial web development? Note:- I will be developing on a Linux machine, using open source tools. Thanks in advance

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  • HTTP install, error in libpcre

    - by Myjab
    When i tried to install http in my ubuntu 11.10, i got the following error configure: error: APR not found. Please read the documentation. then i followed the instructions in [questions/9436860]: Apache httpd setup and installation Here too i got error as follows configure: error: pcre-config for libpcre not found. PCRE is required and available from http://pcre.org/ what should i do now. Thanks in advance

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  • How to transfer Eclipse workspace and project from Windows to Linux and Mac

    - by Li Ma
    We have a a product developed on Windows for years. The product is composed of one Eclipse workspace and about 20 projects. On Windows, we ask every developer check out projects into d:\dev\product folder, and copy a unified Workspace to d:\dev\prod_workspace. This way, whenever a new machine is set, we simply copy files to the same folder, and we can start working immediately. No We need to move our development environment to Linux and Mac. But there's no D:\ on Unix. And home folder for Linux is mostly like /home/username and /Users/username for Mac. We found Eclipse keeps absolute path in workspace when referring to projects, so simply copy workspace over does not work anymore. Even when we manually create/configure workspace on a Linux machine, it still cannot be copied over to another user, because the absolute path is changed. I guess our goal is to allow easy setup of development environment. Do you have any suggestion to move eclipse workspace around? Thanks! Li

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  • Logging errors in ASP.NET (MVC) through the Custom Error

    - by Alex
    In my web.config I have the following: <customErrors mode="RemoteOnly" defaultRedirect="/error.aspx"/> When an error occurs, the user is redirected to /error.aspx?aspxerrorpath=/somepage where I can get user's name, name of the page, date, but... I can't get the error message! I can get it via the OnException method, but then I won't be able to get the name of the page which is very important for me. How can I get both the page and the error message?

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  • Oracle clients dead wait

    - by Macroideal
    hi all friends I meet a problem yesterday. Maybe it's because it is April 1st... but it did exist. I have 3 PCs in remote area, two clients and one oracle server. My app is running separately in the two clients, connecting hourly to the oracle database. My clients worked well before April 1st, but suddenly my app in the client machines went down. Firstly, I did not change any configurations. I used libsqlora8 to connect to the server. I went into a dead loop in the library. I tried sqlplus, but it is dead there in my shell terminal, like it meets an infinite loop: no return until i pressed ctrl + c. The reason I guess is an "infinite loop" somewhere. BTW, when I used my local PC to connect the server, it worked well. Just from this phenomenon, we can see the problem lies in the client machine. I checked the configuration file both in local machine and client machines -they are identical Have you met a problem like this? I hope it's not due to April 1st.

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  • Implementing Forms-Based Authentication

    - by TeaDrinkingGeek
    I have a website for public users, but also have an admin part of about 10 pages, that I need to secure for website admin only. If I implement Forms-Based Authentication on the 10 pages, will it also spread across the public part of the website too? i.e. changes in web.config. I was looking at this example (http://support.microsoft.com/kb/301240) but it looks like it closes off public view for entire application!?! Regards Tea

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  • Use user control in the same folder as the page.

    - by Alex
    I get this message at runtime of ASP.NET 2 page : The page 'MyFolder/blabla.aspx' cannot use the user control 'MyFolder/MyControl.ascx', because it is registered in web.config and lives in the same directory as the page. Of course I can separate them to 2 different folders and thus solve the problem, but the question is : WTF !?!?! Why I can't put them in the same folder ?! Why can't they all .. get along !?! :) Thanks

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  • Windows service (hosting WCF service) stops immediately on start up

    - by Thr33Dii
    My Question: I cannot navigate to the base address once the service is installed because the service won't remain running (stops immediately). Is there anything I need to do on the server or my machine to make the baseAddress valid? Background: I'm trying to learn how to use WCF services hosted in Windows Services. I have read several tutorials on how to accomplish this and it seems very straight forward. I've looked at this MSDN article and built it step-by-step. I can install the service on my machine and on a server, but when I start the service, it stops immediately. I then found this tutorial, which is essentially the same thing, but it contains some clients that consume the WCF service. I downloaded the source code, compiled, installed, but when I started the service, it stopped immediately. Searching SO, I found a possible solution that said to define the baseAddress when instantiating the ServiceHost, but that didnt help either. My serviceHost is defined as: serviceHost = new ServiceHost( typeof( CalculatorService ), new Uri( "http://localhost:8000/ServiceModelSamples/service" ) ); My service name, base address, and endpoint: <service name="Microsoft.ServiceModel.Samples.CalculatorService" behaviorConfiguration="CalculatorServiceBehavior"> <host> <baseAddresses> <add baseAddress="http://localhost:8000/ServiceModelSamples/service"/> </baseAddresses> </host> <endpoint address="" binding="wsHttpBinding" contract="Microsoft.ServiceModel.Samples.ICalculator"/> <endpoint address="mex" binding="mexHttpBinding" contract="IMetadataExchange"/> </service> I've verified the namespaces are identical. It's just getting frustrating that the tutorials seem to assume that the Windows service will start as long as all the stated steps are followed. I'm missing something and it's probably right in front of me. Please help!

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