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• Apache2: mod_wsgi or mod_python, which one is better?

  - by Algorist

  Hi, I am planning to write web service in python. But, I found wsgi also does the similar thing. Which one can be preferred? Thank you Bala Update I am still confused. Please help. Better in my sense means: 1. Bug will be fixed periodically. 2. Chosen by most developers. 3. Additional features like authentication tokens like AWS, can be supported out of the box. 4. No strong dependency on version.( I see that wsgi requires python 2.6) 5. All python libraries will work out of the box. 6. Scalable in the future. 7. Future upgrade don't cause any issues. With my limited experience, I want these features. There might be some I might be missing. Thanks Bala Update I am sorry for all the confusion caused. I just want to expose a restful web services in python language. Is there a good framework?

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• Tools for Maintaining Branches in SVN

  - by Chris Conway

  My team uses SVN for source control. Recently, I've been working on a branch with occasional merges from the trunk and it's been a fairly annoying experience (cf. Joel Spolsky's "Subversion Story #1"), so I've been looking alternative ways to manage branches and merging. Given that a centralized SVN repository is non-negotiable, what I'd like is a set of tools that satisfy the following conditions. Complete revision history should be stored in SVN for both trunk and branches. Merging in either direction (and potentially criss-crossing) should be relatively painless. Merging history should be stored in SVN to the greatest extent possible. I've looked at both git-svn and bzr-svn and neither seems to be up to the job—basically, given the revision history they can export from the SVN repository, they can't seem to do any better a job handling merges than SVN can. For example, after cloning the repository with git, the revision history for my branch shows the original branch off of trunk, but git doesn't "see" any of the interim SVN merges as "native" merges—the revision history is one long line. As a result, any attempts to merge from trunk in git yield just as many conflicts as an SVN merge would. (Besides, the git-svn documentation explicitly warns against using git to merge between branches.) Is there a way to adjust my workflow to make git satisfy the above requirements? Maybe I just need tips or tricks (or a separate merging tool?) to help SVN be better at merging into branches?

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• FTP server output and accents

  - by James P.

  I've written this little test class to connect up to an FTP server. import java.io.BufferedInputStream; import java.io.IOException; import java.io.InputStream; import java.net.MalformedURLException; import java.net.URL; import java.net.URLConnection; public class FTPTest { public static void main(String[] args) { URL url = null; try { url = new URL("ftp://anonymous:[email protected]"); } catch (MalformedURLException e) { e.printStackTrace(); } URLConnection conn = null; try { conn = url.openConnection(); } catch (IOException e) { e.printStackTrace(); } InputStream in = null; try { in = conn.getInputStream(); } catch (IOException e) { e.printStackTrace(); } BufferedInputStream bin = new BufferedInputStream(in); int b; try { while ((b = bin.read()) != -1) { char c = (char) b; System.out.print("" + (char) b); } } catch (IOException e) { e.printStackTrace(); } } } Here's the output: -rw-r--r-- 1 ftp ftp 4700 Apr 30 2007 premier.java -rw-r--r-- 1 ftp ftp 88576 Oct 23 2007 Serie1_1.doc -rw-r--r-- 1 ftp ftp 1401 Nov 21 2006 tp20061121.txt drwxr-xr-x 1 ftp ftp 0 Apr 23 20:04 répertoire Notice the name of the directory at the end of the list. There should be an "é" (e with acute accent) instead of the double character "é". This reminds me of an issue encountered previously with JSF where there was a mix-up between standards. I have little experience with character-encoding though so I'm not sure what's happening. I'm supposing that the server output is in ASCII so how do I adapt the output so it appears correctly in the console?

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• Flash vs. Ajax Abilities

  - by Alex

  Hey everyone. I want to develop an application that does a bunch of cool stuff. The first thing that I need in it is to get information about the page a person is browsing. With that said, I need for example to know how long a user stayed in a page and where was the scrollbar. While getting that data, It's all saved to a database. The thing is, I prefer doing that in Flash [although I have no experience in it] over Ajax since I want to hide the code - which as far as I know not possible in Javascript/Ajax. So, can I do all that in Flash? - Read the content of the page, get the status of the scroll bar.. Plus, I then need to go threw the gathered information that is saved in the database. Since there could be many calculations i thought C++ .Net is better than PHP [which I know better]. Is that all possible or am I just crazy? :) Thanks ahead.

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• What is a good embeddable Java LDAP server?

  - by LeedsSideStreets

  I'm working on a Java web application that integrates with a few other external applications that are deployed along with it. Authentication information must be synchronized across everything and the other applications want to authenticate against LDAP. The application will be deployed in environments where there will be no other LDAP server for everything to use; I have to provide it. My solution so far has been to use Penrose Server as a standalone app, which I set up to examine tables in the main application's database and publish LDAP based on that. It works well, but it would be nice to have something that can be embedded into the main application itself to simplify deployment. It looks like Penrose can be embedded, but the documentation can be a bit spotty or out-of-date (though it seems to be actively developed). It could be an acceptable solution, but if there is another out there that is known to work well in an embedded configuration I might want to check it out. I'm also concerned about GPL issues with Penrose. I'm not at liberty to GPL the source code for the application. I don't believe it was an issue running it standalone, but embedding it may be no-no... anybody know for sure? A permissive license would be good in order to avoid these issues. Requirements: LDAP v3 Must be able to be have the directory contents updated while running, either programmatically or by another means like syncing with the database as Penrose does Easy to configure (no additional configuration for the app at deployment time would be ideal) So far I've briefly looked at ApacheDS and OpenDS which seem to be embeddable. Does anyone have experience with this kind of thing?

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• What is the best "forgot my password" method?

  - by Edward Tanguay

  I'm programming a community website. I want to build a "forgot my password" feature. Looking around at different sites, I've found they employ one of three options: send the user an email with a link to a unique, hidden URL that allows him to change his password (Gmail and Amazon) send the user an email with a new, randomly generated password (Wordpress) send the user his current password (www.teach12.com) Option #3 seems the most convenient to the user but since I save passwords as an MD5 hash, I don't see how option #3 would be available to me since MD5 is irreversible. This also seems to be insecure option since it means that the website must be saving the password in clear text somewhere, and at the least the clear-text password is being sent over insecure e-mail to the user. Or am I missing something here? So if I can't do option #1, option #2 seems to be the simplest to program since I just have to change the user's password and send it to him. Although this is somewhat insecure since you have to have a live password being communicated via insecure e-mail. However, this could also be misused by trouble-makers to pester users by typing in random e-mails and constantly changing passwords of various users. Option #1 seems to be the most secure but requires a little extra programming to deal with a hidden URL that expires etc., but it seems to be what the big sites use. What experience have you had using/programming these various options? Are there any options I've missed?

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• Django Comments and Rating Systems

  - by Patrick

  Hi Folks, I am looking for blogging and comments system that can smoothly integrate with my Django sites, I found there is a lot in the Net and get lost a bit, and I don't have much experience on this. Hope you guys can give me some suggestion. Here is the things that I would like to have: Tag Clouds, Articles Archive (by months/by years), Articles Rating (e.g. with Stars or customize icons), Comments to the particular Topic/Articles, Sub-Comments of a particular comments (i.e. following up comments) Blogs/Articles Searching Able to relate other articles that is relevant (i.e. follow up Articles) Pagination of the comments if get too long OpenIDs supports (e.g. facebook, hotmail, blogger, twitter...etc) Support login before user can comments Able to retrieve Blogs' Header and customized the display order Able to subscribe this article to RSS Able to Email this to friends (this may not belongs to the comments system) If I missed some common functions, please let me know, the comments system I am looking for should do most jobs that those popular comments system should do in the web, e.g. WordsPress. Thank you so much everyone. Have a nice day.

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• Mathematica regular expressions on unicode strings.

  - by dreeves

  This was a fascinating debugging experience. Can you spot the difference between the following two lines? StringReplace["–", RegularExpression@"[\\s\\S]" -> "abc"] StringReplace["-", RegularExpression@"[\\s\\S]" -> "abc"] They do very different things when you evaluate them. It turns out it's because the string being replaced in the first line consists of a unicode en dash, as opposed to a plain old ascii dash in the second line. In the case of the unicode string, the regular expression doesn't match. I meant the regex "[\s\S]" to mean "match any character (including newline)" but Mathematica apparently treats it as "match any ascii character". How can I fix the regular expression so the first line above evaluates the same as the second? Alternatively, is there an asciify filter I can apply to the strings first? PS: The Mathematica documentation says that its string pattern matching is built on top of the Perl-Compatible Regular Expressions library (http://pcre.org) so the problem I'm having may not be specific to Mathematica.

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• Easiest way to use speex preprocessor in C#?

  - by eselk

  I need to use the speex preprocessor, and only the preprocessor in my VOIP app (don't need to use the codec). My app is written in C#. I think I know the easiest steps, but not sure where to find these items. Easiest in my opinion, if I can find these: Windows DLL that contains only the preprocessor functions, or if small enough in size I guess the entire speex library would be OK. So far I've only found binarys in EXE format, so if I can't find the binaries I'd have to install the compiler they use to build their source and probably several other libraries (as is my experience with most open source builds). C# versions of the header files, for pinvoking the DLL functions. So my question is, does anyone know where I can find these? I'm sure people have created these before, based on the huge number of speex users, just not able to find any on-line. Hope people don't think I'm lazy, I just hate doing this kind of "busy work" if I know many others have probably already done the exact same thing :) Update: I did find http://www.rarewares.org/files/others/libspeex-dll-1.2rc1.zip which includes libspeex.dll, but the DLL has no exports so not sure how they expect that to work. The other binaries they have are also just EXEs.

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• Getting a job in the games industry as a developer, just knowing a game engine

  - by numerical25

  I recently enrolled in a community college for games developement. But I am skeptical about the curriculum. I have no experience in the gaming industry so I wouldn't be able to tell whether it's a good investment or not. So I am asking you. I don't want to get too much into the details of all the classes I am taking so I will try to be brief. By the time I graduate, I should have a understanding of how a game engine works. I will be working with the Unreal Engine to develop a Multiplayer game from scratch. So in the process of my final project, I will learn how to work within the Unreal Engine, learn Python and learn how to use its API to connect to a remote server and build game mechanics. Overall I will also recieve an associates degree in game development. I learn C++ but not C. The director said he was trying to implement C in the program as well. What I notice is I will not learn how to build a 3D game engine from scratch. They do not teach any artificial intelligence (AI). I will not learn how to work with the graphics card using a graphics API such as DirectX or OpenGL. I know building a game engine from scratch is a little complex, but at the same time the track is requiring me to take some advanced mathematics courses such as calculus and geometry 1 and 2. I also got to take a physics class. I just think that's a little much for just learning how to use the Unreal Engine but not actually build one or try to learn the anatomy of a games engine. Is this good enough to possibly land my a job in the industry? If I left anything out or was not detail, please feel free to ask more questions. Edit: I do learn data structures and algorithms.

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• How to make dynamically generated .net service client read configuration from another location than

  - by Bryan

  Hi, I've currently written code to use the ServiceContractGenerator to generate web service client code based on a wsdl, and then compile it into an assembly in memory using the code dom. I'm then using reflection to set up the binding, endpoint, service values/types, and then ultimately invoke the web service method based on xml configuration that can be altered at run time. This all currently works fine. However, the problem I'm currently running into, is that I'm hitting several exotic web services that require lots of custom binding/security settings. This is forcing me to add more and more configuration into my custom xml configurations, as well as the corresponding updates to my code to interpret and set those binding/security settings in code. Ultimately, this makes adding these 'exotic' services slower, and I can see myself eventually reimplementing the 'system.serviceModel' section of the web or app.config file, which is never a good thing. My question is, and this is where my lack of experience .net and C# shows, is there a way to define the configuration normally found in the web.config or app.config 'system.serviceModel' section somewhere else, and at run time supply this to configuration to the web service client? Is there a way to attach an app.config directly to an assembly as a resource or any other way to supply this configuration to the client? Basically, I'd like attach an app.config only containing a 'system.serviceModel' to the assembly containing a web service client so that it can use its configuration. This way I wouldn't need to handle every configuration under the sun, I could let .net do it for me. Fyi, it's not an option for me to put the configuration for every service in the app.config for the running application. Any help would be greatly appreciated. Thanks in advance! Bryan

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• AndEngine VS Android's Canvas VS OpenGLES - For rendering a 2D indoor vector map

  - by Orchestrator

  This is a big issue for me I'm trying to figure out for a long time already. I'm working on an application that should include a 2D vector indoor map in it. The map will be drawn out from an .svg file that will specify all the data of the lines, curved lines (path) and rectangles that should be drawn. My main requirement from the map are Support touch events to detect where exactly the finger is touching. Great image quality especially when considering the drawings of curved and diagonal lines (anti-aliasing) Optional but very nice to have - Built in ability to zoom, pan and rotate. So far I tried AndEngine and Android's canvas. With AndEngine I had troubles with implementing anti-aliasing for rendering smooth diagonal lines or drawing curved lines, and as far as I understand, this is not an easy thing to implement in AndEngine. Though I have to mention that AndEngine's ability to zoom in and pan with the camera instead of modifying the objects on the screen was really nice to have. I also had some little experience with the built in Android's Canvas, mainly with viewing simple bitmaps, but I'm not sure if it supports all of these things, and especially if it would provide smooth results. Last but no least, there's the option of just plain OpenGLES 1 or 2, that as far as I understand, with enough work should be able to support all the features I require. However it seems like something that would be hard to implement. And I've never programmed in OpenGL or anything like it, but I'm willing very much to learn. To sum it all up, I need a platform that would provide me with the ability to do the 3 things I mentioned before, but also very important - To allow me to implement this feature as fast as possible. Any kind of answer or suggestion would be very much welcomed as I'm very eager to solve this problem! Thanks!

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• New to Linux Kernel/Driver development...

  - by CVS-2600Hertz-wordpress-com

  Recently, i began developing a driver of an embedded device running linux. Until now i have only read about linux internals. Having no prior experience in driver devlopment, i am finding it a tad difficult to land my first step. I have downloaded the kernel source-code (v2.6.32). I have read (skimped) Linux Device Drivers (3e) I read a few related posts here on StackOverflow. I understand that linux has a "monolithic" approach. I have built kernel (included existing driver in menuconfig etc.) I know the basics of kconfig and makefile files so that should not be a problem. Can someone describe the structure (i.e. the inter-links) of the various folders in the kernel-source code. In other words given a source-code file, which other files would it refer to for related code (The "#include"-s provide a partial idea) Could someone please help me in getting a better idea? Any help will be greatly appreciated Thank You.

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• View Controller's viewDidLoad method finishing before applicationDidFinishLaunching

  - by mwt

  I'm creating a fairly complex iPhone app using Core Data. Up until now, things have been working fine. As the app has been getting more complex, however, a new problem has come up: the first view controller is finishing its viewDidLoad method before the AppDelegate gets even halfway through its applicationDidFinishLaunching method. The view controller is not the root, which is a tab bar controller. The VC in question is the one for the default selected tab on the tab bar. It's getting instantiated by IB. Nothing like this has occurred before in my experience, and it's throwing off the important initialization I'm doing in the AppDelegate (getting objects from Core Data and preparing them for use) . Furthermore, it's intermittent -- sometimes the delegate does finish first. Has anyone else noticed a difficulty like this? Any sample code that deals with such an issue? I suppose that the answer is to make the VC load the data that the AppDelegate is getting ready only when the AppDelegate sends a message that it's ready. I'm a bit concerned that this is adding something that will just end up biting me in the butt later on.

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• Advice for Windows XP Scripting, WSH versus PowerShell

  - by Greg Graham

  After much experience scripting in the Unix/Linux open-source world, using languages such as Bourne Shell, Perl, Python, and Ruby, I now find myself needing to do some Windows XP admin scripting. It appears that the legacy environment is Windows Script Host (WSH), which can use various scripting languages, but the primary language is VBScript, and is based on COM objects. However, the future appears to be Windows PowerShell, which is based on .NET. I haven't done Basic since Applesoft in the 70s, so I'm not keen on learning VBScript, although I did learn enough to write a small script to mount network drives. If I'm going to spend time to really learn this, I'm leaning towards investing my time in the .NET PowerShell environment, if it truly is the future. I did some C# Windows Forms programming a couple of years ago, so I have some exposure to .NET, which also makes PowerShell attractive. Understanding that no one has a crystal ball to predict the future of Microsoft, I would like hear from anyone who is a PowerShell user and thinks it's worthwhile, or if there is anyone that knows of serious drawbacks to PowerShell, and recommends that I stay away from it. Update: I ended up using WSH/VBScript for a particular script that I am installing as a startup script on user's Windows XP workstations. All I have to do is copy it to their Startup folder, and I'm done. However, I only learned enough WSH to accomplish this one job. I am glad to see that PowerShell is the future, and when I have more complicated scripting tasks, I'll to turn PowerShell.

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• lseek/write suddenly returns -1 with errno = 9 (Bad file descriptor)

  - by Ger Teunis

  My application uses lseek to seek the desired position to write data. The file is opened using open() command successfully and my application was able to use lseek and wite lots of times. At a given time, for some users and not easily reproducible the lseek returns -1 with an errno of 9. File is not closed before this and the filehandle (int) isn't reset. After this an other file is created open is okay again and lseek and write works again. To make it even worse, this user tried the complete sequence again and all was well. So my question is, can the OS close the file handle for me for some reason? What could cause this? A file indexer or file scanner of some sort? What is the best way to solve this; is this pseudo code the best solution? (never mind the code layout, will create functions for it) int fd=open(...); if (fd>-1) { long result = lseek(fd,....); if (result == -1 && errno==9) { close(fd..); //make sure we try to close nicely fd=open(...); result = lseek(fd,....); } } Anybody experience with something similar? Summary: file seek and write works okay for a given fd and suddenly gives back errno=9 without a reason.

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• What is the best Binary Decision Diagram library for Java?

  - by reprogrammer

  A Binary Decision Diagram (BDD) is a data structure to represent boolean functions. I'd like use this data structure in a Java program. My search for Java based BDD libraries resulted into the following packages. Java Decision Diagram Libraries JavaBDD JDD JBDD bddbddb If you know of any other BDD libraries available for Java programs, please let me know so that I add it to the list above. If you have used any of these libraries, please tell me about your experience with the library. In particular, I'd like you to compare the available libraries along the following dimensions. Quality. Is the library mature and reasonably bug free? Performance. How do you evaluate the performance of the library? Support. Could you easily get support whenever you encountered a problem with the library? Was the library well documented? Ease of use. Was the API well designed? Could you install and use the library quickly and easily? Please mention the version of the library that you are evaluating.

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• In need of help with setting up the open source library JFreeChart

  - by ssbellows

  I am having trouble with setting up the open source library JFreeChart for creating charts using Java. This is the process I have followed so far in trying to set it up: I downloaded the latest version from their download page http://sourceforge.net/projects/jfreechart/files/. I then unpacked the jfreechart-1.0.13.zip in the directory C:\JFreeChart\jfreechart-1.0.13\ on my system drive. In the unpacked directory there is a folder entitled "lib" which contains the packaged .jar files specified as necessary to use JFreeChart. I added the following directory to my classpath: C:\JFreeChart\jfreechart-1.0.13\lib\ I then created a simple program and added the line "import org.jfree.chart.*;" to see if it would compile with a package imported from JFreeChart. I navigated to the folder in which my sample program was contained and compiled with the following command: "javac -classpath C:\ Program.java" I was given the following error: "package org.jfree.chart does not exist" Could someone please give me some input as to what I have done incorrectly in this setup process? This is the first time I've tried using an open source library, so I don't have any prior experience to go on myself. Thank you very much in advance.

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• Software development metrics and reporting

  - by David M

  I've had some interesting conversations recently about software development metrics, in particular how they can be used in a reasonably large organisation to help development teams work better. I know there have been Stack Overflow questions about which metrics are good to use - like this one, but my question is more about which metrics are useful to which stakeholders, and at what level of aggregation. As an example, my view is that code coverage is a useful metric in the following ways (and maybe others): For a team's own internal use when combined with other measurements. For facilitating/enabling/mentoring teams, where it might be instructive when considered on a team-by-team basis as a trend (e.g. if team A and B have coverage this month of 75 and 50, I'd be more concerned with team A than B if the previous month they'd had 80 and 40). For senior management when presented as an aggregated statistic across a number of teams or a whole department. But I don't think it's useful for senior management to see this on a team-by-team basis, as this encourages artifical attempts to bolster coverage with tests that merely exercise, rather than test, code. I'm in an organisation with a couple of levels in its management hierarchy, but where the vast majority of managers are technically minded and able (with many still getting their hands dirty). Some of the development teams are leading the way in driving towards agile development practices, but others lag, and there is now a serious mandate from the top for this to be the way the organisation works. A couple of us are starting a programme to encourage this. In this sort of an organisation, what sort of metrics do you think are useful, to whom, why, and at what level of aggregation? I don't want people to feel their performance is being assessed based on a metric that they can artificially influence; at the same time, the senior management are going to want some sort of evidence that progress is being made. What advice or caveats can you provide based on experience in your own organisations? EDIT We are definitely wanting to use metrics as a tool for organisational improvement not as a tool for individual performance measurement.

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• Static Data Structures on Embedded Devices (Android in particular)

  - by Mark

  I've started working on some Android applications and have a question regarding how people normally deal with situations where you have a static data set and have an application where that data is needed in memory as one of the standard java collections or as an array. In my current specific issue i have a spreadsheet with some pre-calculated data. It consists of ~100 rows and 3 columns. 1 Column is a string, 1 column is a float, 1 column is an integer. I need access to this data as an array in java. It seems like i could: 1) Encode in XML - This would be cpu intensive to decode in my experience. 2) build into SQLite database - seems like a lot of overhead for static access to data i only need array style access to in ram. 3) Build into binary blob and read in. (never done this in java, i miss void *) 4) Build a python script to take the CSV version of my data and spit out a java function that adds the values to my desired structure with hard coded values. 5) Store a string array via androids resource mechanism and compute the other 2 columns on application load. In my case the computation would require a lot of calls to Math.log, Math.pow and Math.floor which i'd rather not have to do for load time and battery usage reasons. I mostly work in low power embedded applications in C and as such #4 is what i'm used to doing in these situations. It just seems like it should be far easier to gain access to static data structures in java/android. Perhaps I'm just being too battery usage conscious and in my single case i imagine the answer is that it doesn't matter much, but if every application took that stance it could begin to matter. What approaches do people usually take in this situation? Anything I missed?

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• Unable to set variables in bash script in Mac OSX

  - by cohortq

  Hello! I am attempting to automate moving files from a folder to a new folder automatically every night using a bash script run from applescript on a schedule. I am attempting to write a bash script on Mac OSX, and it keeps failing. In short this is what I have (all my ECHOs are for error checking): !/bin/bash folder = "ABC" useracct = 'test' day = date "+%d" month = date "+%B" year = date "+%Y" folderToBeMoved = "/users/$useracct/Documents/Archive/Primetime.eyetv" newfoldername = "/Volumes/Media/Network/$folder/$month$day$year" ECHO "Network is $network" $network ECHO "day is $day" ECHO "Month is $month" ECHO "YEAR is $year" ECHO "source is $folderToBeMoved" ECHO "dest is $newfoldername" mkdir $newfoldername cp -R $folderToBeMoved $newfoldername if [-f $newfoldername/Primetime.eyetv]; then rm $folderToBeMoved; fi Now my first problem is that I cannot set variables at all. Even literal ones where I just make it equal some literal. All my echos come out blank. I cannot grab the day, month, or year either,it comes out blank as well. I get an error saying that -f is not found. I get an error saying there is an unexpected end of file. I made the file and did a chmod u+x scriptname.sh I'm not sure why nothing is working at all. I am very new to this bash script on OSX, and only have experience with windows vbscript. Any help would be great, thanks!

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• Trying to build a Drupal-like CMS in ASP.NET MVC - Newbie Questions

  - by user252160

  I am new to ASP.NET MVC, and the ASP.NET technology in general, so, please, excuse the stupidity of my questions. I have a lot of experience with php development and CMS customization (Drupal and Wordpress mainly), and I wanted to know whether some techniques could be applied in asp.net mvc. I want to know what exactly could be modified without recompiling an already built application Can I edit the views without recompiling the app. Can I create custom themes ? Can I add plugins compiled as dlls and use them at runtime. Can I "mark" the assembly in such a way that the web application will check on the next request and will reference it, without me manually adding it to the project and recompiling. I've heard that this is possible. I will make sure to add more when something comes up. The reason I am asking is because I'd like to try and develop a Drupal-like CMS (custom types, views, etc) in asp.net mvc. The dynamism of php will be quite a challenge to replicate in a compiled technology, yet I am ready to try.

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• Browser Based Streaming Video/Audio (not progressive download)

  - by Josh

  Hello, I am trying to understand conceptually the best way to deliver real streaming audio and video content. I would want it to be consumed with a web browser, utilizing the least amount of proprietary technology. I wouldn't be serving static files and using progressive download, this would be real audio streams being captured live. How does one broadcast a stream that will be reasonably in sync with the source? What kind of protocol is suitable? Edit: In research I've found that there are a few protocols: RTSP, HTTP Streaming, RTMP, and RTP. HTTP streaming is somewhat unsuitable if you are streaming a live performance/communication of some kind because it relies on TCP (as its HTTP based) and you don't lose packets. In a low bandwidth situation, the client can get significantly behind in playback. ref RTMP is a proprietary technology, requiring flash media server. Crap on that. The reason I looked at flash is because they are extremely flexible as far as user experience goes. SoundManager2 provides an excellent javascript interface for playing media with flash. This is what I would look for in a client application. RTSP/RTP is what Microsoft switched to using, deprecating their MMS protocol. RTSP is the control protocol. Its similar to HTTP with a few distinct difference -- server can also talk to the client, and there are additional commands, like PAUSE. Its also a stateful protocol, which is maintained with a session id. RTP is the protocol for delivering the payload (encoded audio or video). There are a few open sourced projects, one of them being supported by apple here. It seems like this might do what I want it to, and it looks like quite a few players support it. It sounds like it would be suitable for a "live" broadcast from this page here. Thanks, Josh

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• cache_money only writing to memcached on creates and updates, and seemingly never looking in the cac

  - by Shane Liebling

  I seem to be having some extremely odd cache_money interactions. When I am on the console, and I create a new instance of a class and save it I see the cache misses and cache stores on my memcached console output. Then when the create finishes I see a bunch of cache deletions. If I then try to do any kind of find for the newly created object (or any other objects for that matter) I never see any cache access. This is highly confusing. I could kind of understand if all finds never hit the cache (though that in and of itself would be an issue requiring investigation), but finds do seem to hit the cache when the object is being created (checking for associations and such). Anyone have this experience in the past at all? Any thoughts? AFAIK there isn't really much in the way of configuration options for cache_money, and it certainly doesn't seem like there are any that would be on by default and be creating these kinds of symptoms. My cache_money config is basically straight out of the docs. Any help would be greatly appreciated.

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• JSP or .ascx equivalent for Scala?

  - by Daniel Worthington

  I'm working on a small MVC "framework" (it's really very small) in Scala. I'd like to be able to write my view files as Scala code so I can get lots of help from the compiler. Pre-compiling is great, but what I really want is a way to have the servlet container automatically compile certain files (my view files) on request so I don't have to shut down Jetty and compile all my source files at once, then start it up again just to see small changes to my HTML. I do this a lot with .ascx files in .NET (the file will contain just one scriptlet tag with a bunch of C# code inside which writes out markup using an XmlWriter) and I love this workflow. You just make changes and then refresh your browser, but it's still getting compiled! I don't have a lot of experience with Java, but it seems possible to do this with JSP as well. I'm wondering if this sort of thing is possible in Scala. I have looked into building this myself (see more info here: http://www.nabble.com/Compiler-API-td12050645.html) but I would rather use something else if it's out there.

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