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  • Tomcat Load Balalncing - Programatic Parameter Based ??

    - by Gala101
    Here's the scenario: Many users access an application (running on tomcat), the user's data is segmented into multiple databases, say each db containing 1000 user's data. Now is it somehow possible to have 100s of tomcat servers running on 'inexpensive' PC class machines with each connecting to a single db, with user's session getting passed to appropriate tomcat and becoming 'Sticky' there. Can have some sort of 'gateway' deciding which user goes where and doing the load-balancing appropriately. Would make a great scalability solution :)

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  • How to convert a video via ffmpeg to an mp4 format that will stream and/or download to iPhone and Bl

    - by Yegor
    I have a site where people upload videos, which are converted to .flv format. Simple. I wanted to also convert to an mp4 format that will "stream" to an iphone and blackberry, or allowed to be downloaded to either, for later viewing. Can someone post a working ffmpeg line to accomplish this task? Closest I got was this (which doesn't work) ffmpeg -i in.avi -f mp4 -vcodec libx264 -maxrate 1000 -qmin 3 -qmax 5 -bufsize 4096 -g 300 -acodec libfaac -s 480x320 -ab 128k -qscale 7 out.mp4

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  • Arbitrary-precision arithmetic Explanation

    - by TT
    I'm trying to learn C and have come across the inability to work with REALLY big numbers (i.e., 100 digits, 1000 digits, etc.). I am aware that there exist libraries to do this, but I want to attempt to implement it myself. I just want to know if anyone has or can provide a very detailed, dumbed down explanation of arbitrary-precision arithmetic. Thanks!

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  • Application Profiling: Memory Usage

    - by Abs
    Hello all, I have switched on the Codeigniter profile (very useful) and I have noticed that a page of mine shows the memory used as: 2,405,496 bytes That's ~2MB and it's for one request - does it mean if 1000 users accessed this page at the same time, memory usage will be 2GB? Have I got my maths wrong or is there more to this than just multiplying two numbers? Thanks all for any help

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  • Webdevelopement : Login Specification

    - by mr.bio
    Hi there , i just started with PHP and i wanted to implement a Login. Rather than inventing the Wheel : is there any Online Specification for a Login System ? Things a should care about : detect Brute Force attacks implement password recovery maybe openID and/or with facebook account prevent SQL injection ..... So i think this has been done more than 1000 times. Where can i read about it ?

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  • which ad solution is best for iPhone apps

    - by nbojja
    Hi All, i have a iPhone free app downloaded by 3000 users. mostly every one uses my app atleast once in a day. So i am planning to keep ads on my app. Which ad solution is best. and i looked in some sites. No one is giving clear details about CPMs. my direct question is "How much will i get for 1000 impressions using different ad solutions?" thanks

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  • Problem installing mysql 5 on Ubuntu 10.10

    - by mujer esponja
    Hello! In my Ubuntu 10.10, following this tutorial, I don't face step 2. I mean, while installing the packets, I don't face anything related to configuration. Then, when I run a command, such a mysql -u root -p , I get this error: ERROR 2002 (HY000): Can't connect to local MySQL server through socket '/var/run/mysqld/mysqld.sock' (2) As I see in other treads, ps aux | grep mysqld gives me just this output: 1000 4508 0.0 0.0 5172 760 pts/0 S+ 19:53 0:00 grep --color=auto mysqld What is happening?? Thanks in advance

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  • MySQL ORDER BY rand(), name ASC

    - by Josh K
    I would like to take a database of say, 1000 users and select 20 random ones (ORDER BY rand(),LIMIT 20) then order the resulting set by the names. I came up with the following query which is not working like I hoped. SELECT * FROM users WHERE 1 ORDER BY rand(), name ASC LIMIT 20

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  • Error in computed Field of select Query

    - by Shehzad Bilal
    This Query is giving me an error of #1054 - Unknown column 'totalamount' in 'where clause' SELECT (amount1 + amount2) as totalamount FROM `Donation` WHERE totalamount > 1000 I know i can resolve this error by using group by clause and replace my where condition with having clause. But is there any other solution beside using having clause. If group by is the only solution then I want to know why I have to use group by clause even I havent use any aggregate function thanks.

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  • how to repeat alarm week day on in android

    - by user1662296
    I want to get alarm on monday to friday only. my code is here if (chk_weekday.isChecked()) { int day = calNow.get(Calendar.DAY_OF_WEEK); if (day == 2 || day == 3 || day == 4 || day == 5 || day == 6) { alarmManager.setRepeating(AlarmManager.RTC_WAKEUP, calSet.getTimeInMillis(), 1 * 60 * 60 * 1000, pendingIntent); } Have a Idea.

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  • How do I generate a custom SID?

    - by Max Schmeling
    I need to generate custom SIDs for users in my web application for use with Microsoft AzMan. What is the best way to do this? What do I need to know before doing this? This is what I'm thinking, but I'm not sure if I'm missing something: S-1-9-1234-{user_id + 1000} S-{first revision}-{resource manager authority}-{domain (unique number for the specific app)}-{unique id for user} UPDATE: Changed to resource manager authority because of David Crawford's blog entry: http://blogs.msdn.com/dc995/archive/2006/08/23/715021.aspx

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  • JQuery Animate.

    - by Oliver
    Hi Really easy, I'm sure... I have a div which is the full screen and I want it to slide down from the top to the bottom. I have this: $('#full-screen').animate({ "bottom":0, height: 'toggle' }, 1000, function() { // Animation complete. }); But this is the wrong way round as the bottom moves up; how do I get the bottom to stay where is is and the top to slide down to meet it? Thanks

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  • Exporting collections

    - by Ruslan
    Hi, have select like select trn_dt,collect(ac_no) from transactions where rownum < 1000 group by trn_dt i'm doing it in SQL Navigator. But i can't export results! Table collect(ac_no) is not exported. Is there any way out?

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  • jQuery - How to Use slideDown (or show) function on a table row?

    - by Greg
    I'm trying to add a row to a table and have that row slide into view, however the slidedown function seems to be adding a display:block style to the table row which messes up the layout. Any ideas how to work around this? Here's the code: $.get('/some_url',{'val1':id}, function(data){ var row = $('#detailed_edit_row'); row.hide(); row.html(data); row.slideDown(1000); });

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  • crowd website simulation on localhost for a php/mysql project

    - by Mac Taylor
    hey guys I searched for a while on how to find a benchmarking software that can simulate crowd website with more than 1000 users online to find out leaks in my php/mysql script . as long as i ran my script for a huge community and it wasn't successful enough and lots of RAM usage happened , now I need a way to simulate that much usage to benchmark my script and optimize it . I am using XAMMP Local Server and my project written in PHP&MYSQL. thanks in advance

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  • how to work with datagridview if need show many columns data (approx 1Mio)

    - by ruprog
    is a problem to display data in Datagridview. A large amount of data (stock quotes) data to be displayed from left to right Tell me what to do to display an array of data in datagridviev Public dat As New List(Of act) Public Class act Public time As Date Public price As Integer End Class Sub work() Dim r As New Random For x As Integer = 0 To 1000000 Dim el As New act el.time = Now el.price = r.Next(0, 1000) dat.Add(New act) Next End Sub

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  • making multiple c# file for one asp.net page

    - by Nikhil K
    For my project(in asp.net) i wrote near 1000 lines of c# code for one asp.net page.It includes so many functions.The problem is,it is going complicated while i am writing more codes on one page.How can i make multiple c# files for one asp.net page?? I tried by adding new class in VS2008.But calling a function from one file to other is making error(item is not present in current file).How can i do that??

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  • Calling functions from main() in c++

    - by Supriyo
    Hello. I have a programme that has about 100 classes and more than 1000 functions spread over 20 header and source code files. What I want to know is that how I can pass arguments to so many functions in so many files? What is the procedure adopted for this in main()? Regards, Supriyo

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  • Is ajax + comet + asp.net scalable ?

    - by pixel3cs
    Thinks at a backgammon online multiplayer game with over 100, or even 1000 online users. The game communication is done using Ajax + 3 seconds Comet connection interval + ASP.NET technology. Is this a real scenario ? Didn't so many Comet open connections block the server resulting in big latency ?

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