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I'd like to learn how to implement basic "comet" or client push methods
something like meebo
from server and client side , where can I find good and clear spec?
Thanks
Although you're not really specifying the technology you would like to work in ... But these links proved to be very helpful for me:
Ajax Push(like) Chat with Comet
Creating Comet applications with ASP.Net
COMET (or Reverse AJAX) based Grid Control for ASP.NET
Comet is a big term, and there are many different implementations. There isn't a particular single specifications, it is more of a concept or idea.
I had to do a project with server push, and I came across a couple of attempts to come up with specifications, such as BOSH.
Eventually, I found the best I could do was check out what others are currently doing, there are a couple of nice projects such as Orbited and Juggernaut. Then, implement my own solution.
I built my own solution using Twisted and SocketBridge.
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I'm looking for an alternatives to yUML, preferably open source.
Sure yUML is great and I really like it, but I would like to be able to extend it.
I'm also interested in other services in the same direction (diagram generation), but I'm not looking for any (UML)desktop tools.
Some suggestions of textual modeling tools. For instance, take a look at PlantUML
Scruffy can draw some yUML diagrams.
Scruffy-Server is a newly made web server frontend for Scruffy which has a rendering and syntax almost identical to yUML.
At the moment it doesn't have the PDF/Json/SVG(or PS) export options, but those might be coming. On the other hand it is very fast and has a lean interface.
PS: I might a little be biased as I made it.
Perhaps take a look at jsUML2. It doesn't provide a textual syntax for specifying diagram - it provides a js-based api instead. However the api is very easy to use and it's open source so extensible. They have a demo app built using it here.
hth.
Some years ago I've developed an open source alternative based on Graphviz.
It's basic and only work for relationship diagrams, but it can be extended.
The output look is very similar to yUML.
Here's the link: http://web.fi.uba.ar/~ssantisi/works/glumly/
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Is there a decent website or service out there where developers can propose a new idea for an open source project (regardless of language) and have the community vote it up / down, form teams, and do everything that precedes writing the first line of code?
There is the SomeBodyMakeThis reddit. Also, project sites like SourceForge allow you to create a project which is in the "planning" stage. Often, this is used by people who think they have a good idea and want somebody else to make it for them.
Kind of like Kickstarter (for funding), SourceForge (for hosting), or an IdeaStorm (for brainstorming and community feedback)? The Apache Foundation, or the Horde project (for incubating a plethora of related projects)? It really depends on to what your idea relates. Try joining one of the relevant extant open-source communities and sounding off on your idea.
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Does anyone know of a FOSS alternative to mediawiki?
Specifically I'm looking for the in-built features of granular access control, a hierarchy of pages users can navigate, and more easy to use than mediawiki.
Well, there's Dokuwiki. It's very nice, and it's my Wiki of choice. It is supposed to provide granular access control; I have never really worked with it, however, and my impression is it's not that great (I can be wrong, though, I've never really examined it).
Building hierarchies of pages is easy though, and showing a navigation structure too, using the indexmenu plugin.
I find the setup of a fresh Dokuwiki to be a bit cumbersome at times, but the everyday work is very easy and straightforward. I do not know Mediawiki that well so I can't compare, but if you are looking at Wikis, Dokuwiki is definitely something to look at.
There's also the WikiMatrix, a comprehensive comparison of a huge number of Wikis, incidentally built and run by the author of DokuWiki.
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I'm in the process of setting up a new website which would greatly benefit from having user-forums.
Since I already have user accounts, and profile details, stored away it seems that I'd benefit from choosing an open-source forum package which I could modify so that logins were tested against my existing database.
Right now all my site is Perl-based, and looking around I don't see many great Perl forums - the only obvious one I could find which is featureful is yabb - but that is written to authenticate against flat files and to be frank the code is nasty.
If I need to use a PHP solution then so be it, but first are there any simple forums that are written in perl that you'd suggest? I'd expect to have different forum-groups and nominate particular users as moderators. More than that I don't need, just basic threading and an attractive appearance.
Really simple forums are often really insecure forums. If you're determined to use perl, a major web forum doesn't come to mind, and if your competent in security I'd say roll your own. You could even release it to the open source community to help people like you. I know there are several great PHP ones out there that aren't so insecure an rather well developed.
I seem to remember that Drupal had a reasonable fit as a module.
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Anybody found yet a good web site architecture using linq to sql? Any help will be very helpful!
We just finished up an internal IT project banking heavily on Linq2Sql and it paid off. I was a bit skeptical at first, but I think it worked out great in the end. Just remember, the fundamentals don't change.
try to stay as stateless as possible
keep clean lines between your services and data access
don't fight linq, use it. If it isn't helping you, you are probably doing something wrong
Our implementation ended up being a hybrid of the Andrew Siemer and Beth Massi approach (a bit heavier on the Andrew side) and in C#
What, apart from StackOverflow? ;-)
Remember Linq is a technology that sits atop the typical data access structures. Therefore all rules that have applied thus far still hold. Just because you can get to data a little easier in the client app doesnt mean you throw out the architecture best practices for data access.
Rob Conery's MVC Storefront
As others have said, linq-to-sql is no different to any other ORM so the architecture is the same as you would use for NHibernate and others.