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  • apache and ajp performance

    - by user12145
    I have an apache sitting in front of two tomcat app servers(one on the same physical server, the other on a different one) that does time consuming work(0.5 sec to 10sec per request). The apache http server is getting killed by an average of 1 to 2 concurrent requests per second. both Server spec is about 2GB of RAM. Is there a way to optimize apache to handle the load? any advise is welcome. BalancerMember ajp://localhost:8009/xxxxxx BalancerMember ajp://XXX.XX.XXX.XX:8009/xxxxxx I keep getting the following in apache2.2 log: [Mon Dec 28 00:31:02 2009] [error] ajp_read_header: ajp_ilink_receive failed [Mon Dec 28 00:31:02 2009] [error] (120006)APR does not understand this error code: proxy: read response failed from 127.0.0.1:8009 (localhost)

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  • PHP create_function, function without semicolon?

    - by Ozzy
    hi all, basically, what i want to know is, for the second parameter in the create_function function, is there anyway to pass a string without a semicolon? or will it not work. example: taken from php.net create_function('$a,$b', 'return "CRCs: " . crc32($a) . " , ".crc32(b);'), notice that there is a semicolon in the string. is there any possible way someone can enter a function without a semicolon that will still run/evaluate?

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  • Does the openssl command line do key strengthening?

    - by chotchki
    If I run the openssl command line in hmac mode (as below), is the key used for the hmac used directly or is it hashed before using it as the key? echo "foo" | openssl dgst -sha256 -binary -hmac "test" | openssl base64 Similarly, when encrypting a file with openssl (as below)is the pass phrase hashed with the salt? (If so how is it done? A pointer to the right source file would be even better.) openssl enc -salt

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  • How to make dynamic object?

    - by John
    I am using the XmlSerializer like this, XmlSerializer xs = new XmlSerializer(typeof(myType)); Now I have 5 different "myType". How do I pass the specific type dynamically so I don't have to repeat the same code 5 times? Thanks

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  • Parsing JSON object in JQuery

    - by koby
    Hi, I have simple JSON object returned in form {"d":"{\"Name\":\"DMX100\",\"Description\":\"blah blah\",\"ID\":\" 780\",\"Make\":\"2010\"}"} How do I parse it in success. success: function(msg) { $('#something').html(msg.d.Name); } Above code doesnt display Name but when I pass $('#something').html(msg.d); it shows complete Json string. How do I reach to individual properties Thanks

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  • How to route traffic through a VPN tunnel?

    - by Gabriel
    The problem with our server is that we need to use the bug ridden and awful AT&T network client, which causes our server to bluescreen once per 24 hours. Does any one know how to (or has a good guide) quickly set up a workstation running Windows server 2008 R2 as a proxy server. So this spare workstation would run AT&T and would act as a bridge between our server and the server that can be connected to only via the AT&T VPN software. And this way our own production server would not crash so often (or not at all) and the workstation can happily crash whenever it wants to.

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  • VMware virtual network adapters and Windows Firewall

    - by anonymous
    I am running VMware Workstation 7.1.4 on Windows 7 Enterprise SP1-U (x64). Aside from the physical network adapter, I have created a single virtual network adapter (VMware Virtual Ethernet Adapter for VMnet1) which is connected to (can be seen by) the host and the guests. My problem is, even after applying the "*NdisDeviceType = 1" tweak to the virtual adapter, making it disappear from the Network and Sharing Center, I still can't connect to programs running in the host from the guests, unless I specifically "allowed the program to communicate with the public network" using the Windows Firewall (which I don't want to do). This happens to all the programs and services running in the host (File and Printer Sharing, Database server, HTTP proxy, etc.) I am getting the impression that applying the "*NdisDeviceType = 1" tweak only hides a network from the Network and Sharing Center but not actually making it private. Any hints and suggestions?

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  • Best way to deploy my node.js app on a Varnish/Nginx server

    - by Saif Bechan
    I am about to deploy a brand new node.js application, and I need some help setting this up. The way my setup is right now is as follows. I have Varnish running on external_ip:80 I have Nginx behind running on internal_ip:80 Both are listening on port 80, one internal port, one external. NOTE: the node.js app runs on WebSockets Now I have the my new node.js application that will listen on port 8080. Can I have varnish set up that it is in front of both nginx and node.js. Varnish has to proxy the websocket to port 8080, but then the static files such as css, js, etc has to go trough port 80 to nignx. Nginx does not support websockets out of the box, else I would so a setup like: varnish - nignx - node.js

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  • Switch 302 redirect to 301 with Apache 2 ProxyPass in front of Tomcat 6

    - by Gearóid
    I'm trying to optimise my site for SEO and it seems as though their is a 302 direct in action for the http requests. I'm hosting my app on a Tomcat 6 server which lies behind an Apache 2 server. I use the ProxyPass method (http://tomcat.apache.org/tomcat-6.0-doc/proxy-howto.html) to forward all requests to port 8080 (the port my app is hosted on). I've seen a lot of advice on how to set the redirect type when using the VirtualHost method but none to do with ProxyPass. The app is a Struts app that forwards users on to index.jsp when they hit the base url. Could this also be the issue? I'm grateful for any help on this one! Cheers!

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  • How to enable Jetty to support cometd/reverse ajax while let it listen to port 80?

    - by janetsmith
    I would like to use cometd / reverse ajax capability of Jetty 7. I tried to configure it so it listen to port 80, instead of 8080. However, according to http://jetty.mortbay.org/jetty5/faq/faq%5Fs%5F200-General%5Ft%5Fapache.html , Apache can be configured as a HTTP/1.1 proxy to pass selected request to the Jetty using the HTTP/1.1 protocol. This is simple to configure and use, but current versions of the apache mod_proxy do not support persistent connections. As far as I know, the reverse ajax in jetty is depending on continuation (I guess it is persistent connection). So how to let jetty support reverse ajax, while coexist with apache server? Thanks.

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  • How does the proc in the caches_action if clause get execute

    - by Sid
    I have a newbie kind of question which I cant get my head around. How does the Proc in the if condition of the caches_action get executed for the caches_action method. for example caches_action :show, :if=Proc.new{|x| something} what i dont get its how does this get called. I know i can execute a proc defined as proc= Proc.new by proc.call so i dont understand how this gets called. Second how do I pass conditions like if logged_in? I'd appreciate any help on this

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  • jquery dialog form with dynamic variables

    - by Patrick
    Hello, Currently I have an html form - which I call with jquery dialog - to insert new records into a table. But I also would like to update existing records with the same form - using jquery dialog. I'm not sure within the dialog how I access these data values - or pass them in as arguments - and hook them up with the form elements...? Anyone has done this before and knows an agile technique to do this? kind regards, Patrick

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  • How to make Android not to recycle my Bitmap until I don't need it?

    - by RankoR
    I'm getting drawing cache of the view, that is set as contentView to the Activity. Then I set new content view to the activity and pass that drawing cache to it. But Android recycles my bitmaps and I'm getting this exception: 06-13 01:58:04.132: E/AndroidRuntime(15106): java.lang.RuntimeException: Canvas: trying to use a recycled bitmap android.graphics.Bitmap@40e72dd8 Any way to fix it? I had an idea to extend Bitmap class, but it's final. Why GC is recycling it?

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  • Optimizing a memoization decorator not increase call stack

    - by Tyler Crompton
    I have a very, very basic memoization decorator that I need to optimize below: def memoize(function): memos = {} def wrapper(*args): try: return memos[args] except KeyError: pass result = function(*args) memos[args] = result return result return wrapper The goal is to make this so that it doesn't add on to the call stack. It actually doubles it right now. I realize that I can embed this on a function by function basis, but that is not desired as I would like a global solution for memoizing. Any ideas?

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  • Question about oracle db connection with .NET

    - by john
    I'm trying to connect to an oracle database with .net but i get the error: ERROR [IM002] [Microsoft][ODBC Driver Manager] Data source name not found and no default driver specified however, when I enter add a new database connection through toolsconnect to database. it works fine. even after copying the connection string which is: Data Source=source here;Persist Security Info=True;User ID=userhere;Password=pass;Unicode=True

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  • How to set Accept-Language header on request from applet

    - by Jo
    Hi, I'm not familiar with Java but I need to make a request to a remote webservice from within my applet. The webservice (.Net 1.1) uses HttpContext.Current.Request.UserLanguages[0] to determine the language to use. But the value of this member is alway null. So is there a way to pass the Accept-Language header along with something like "en-GB" set?

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  • List of objects plus a tag

    - by MC
    I want to store a list of objects, lets say of type Car, but with an additional 'tag' property eg a boolean True/False which does not belong on the Car class. What is the best way to accomplish this? I need to pass the result between methods.

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  • How to create unit test for actualHeight in Silverlight 4?

    - by eflles
    How can I write a unit test to test the actualWidth property to a userControl in Silverligh 4? I hoped that this method would pass, but it fails. I am using the Silverlight ToolKit april 2010, and VS 2010. <TestMethod()> _ Public Sub TestAcrtualWidth() Me.MyUserControl.Width = 100 Me.MyUserControl.UpdateLayout() Assert.IsTrue(Me.MyUserControl.ActualWidth > 0) End Sub

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  • Finding the largest subtree in a BST

    - by rakeshr
    Given a binary tree, I want to find out the largest subtree which is a BST in it. Naive approach: I have a naive approach in mind where I visit every node of the tree and pass this node to a isBST function. I will also keep track of the number of nodes in a sub-tree if it is a BST. Is there a better approach than this ?

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