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We had the problem when the CPU util on a single core machine went to 100 %. The number of users is 8-10 on a server hosted at the ISP end. When the server was upgraded to 4 core, the same problem persists. We have used Hibernate and JSF for implementation and MySQL as the backend. I strongly feel it is a problem with the JBOSS configuration but unable to fix it. Kindly help
I doubt that anyone is going to be able to help you on this without significantly information than you have provided ... and could reasonably provide in an SO question.
The best I can suggest is that you use jvisualvm and jconsole ... and the host operating system's system monitoring tools ... to try to get a handle on where your system's resources are being used.
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I am just trying to learn MongoDB. I followed this walktrough to install it:
http://docs.mongodb.org/manual/tutorial/install-mongodb-on-windows/
Here is my screenshot for mongod.exe:
And here isthe screenshot of mongo.exe:
It seems everything is fine to me. Am I wrong?
During my googlings I decided that MongoVue is a good management application for MongoDB by a cool user interface. So I downloaded and installed it. Here is the screen I see when I opened it:
How do I have to fill these fields to create a connection from MongoVue to MongoDB? Do I have to do something else before that?
Assuming you haven't configured authentication within MongoDB, just give the connection a name and fill in the IP address of the server (127.0.0.1 if it's local):
Click Test to test out the settings and then Save to create the connection. Then click Connect on the parent dialog to actually connect to the server.
Caution
MongoVUE doesn't work with 3.x MongoDB servers and hasn't been updated in almost two years. See here for alternatives.
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For a networking class, I want to do a presentation and project on DDoS attacks. I have been researching them for a while and am interested in conducting a small scale attack against a victim server with no security (I'll most likely set this up using nginx or apache) running on a Raspberry Pi. I want to run a demo of this happening in class - first with no security, and then a few other times - each time adding another layer of security.
Does anyone have an idea how much traffic I would need in order to take this down? Also what would be the best way to generate this traffic? I'm not sure if this part is even possible as I don't have access to a lot of computers...I do have a mac pro with 24GB of ram so I have been considering running several virtual boxes with that.
Thanks for the help!
I was able to get it working locally using nginx on the Pi and LOIC.
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I have a diagram (SDL) showing a scenario where the deployer is split into the HTTP Upload services running on n servers and the Deployer services running on n servers, sharing storage for the uploaded packages - I'm curious how this would be configured as it doesn't make sense at first glance, has anyone done it this way?
I'd imagine your deployers are looking at a network mapped shared directory for their 'incoming' directory?
I'd also imagine your services are service based deployers, where your http uploads are of the web-based flavour.
Perhaps you could share your diagram?
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I have just finished my own web app and I am looking at which is the best UK based web hosting solution? I would be grateful for any input as I am finding it very difficult to cut through the cr*p.
Thanks,
Adrian
Not sure if it's really for this site, as it's not directly programming per se...
Anyway, I use Hosting UK for my web hosting, .NET 4.0 and SQL 2008 databases are all available, and a medium trust environment so you can include other binaries in your application.
I've also found their support to be very good.
We host with NimbusHosting and are extremely pleased with their service. They offer VPS packages, both Windows and Linux.
We currently only use Linux, so I unfortunately cannot verify what edition of SQL Server they allow (most likely Express).
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I have an engineering firm and our website was built using Visual Studio 2010 / asp.net 4.0 / VB. Recently, a client (GM) requested that we have a knowledge base where they can input their questions, and we can answer 'em. Kind of like a FAQ, or a Lessons Learned type of thing. But it'll require that they'll be able to log in and ask their own questions.
For instance: Q: How would I incorporate multiple machine vision systems into a bead detection application?
A: You would need to use a software such as PPT and have multiple fixtures in order to assimilate the cameras accordingly.
I'm terrible at databases; I can basically run an SQL query, and that's about it! lol. And I'm not a programmer by trade. Can I do this without a database? Can anyone guide me in the right direction here? I mean, is there something out there that's open-source, or at least something that's easy to implement?
Any guidance in this regard would be greatly greatly appreciated! Thanks!
Just install a Wiki.
There are plenty of different ones out there - some written in .NET lanaguages.