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I am sorry about this question but I am new to mesos and I am curious to know, how should I go about building my own mesos framework. Any step by step guide or good resources would be much helpful.
You should start with docs. There is whole Developing Mesos Frameworks section about developing own framework.
New approach in developing frameworks is to use HTTP API which provides more features (like reverse offers) so definietely read about scheduler and executor HTTP API.
Of course taking a look on other frameworks will be good point to start. Depending on your need this could be Aurora, Fenzo, Marathon. Whole list is here
There is a framework to build Mesos frameworks called Mesos-starter.
If you want to use native API there are official bindings for C++, Python and Java but there are unofficial bindings for other languages like Go, JS or Clojure.
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I want to go with Xamarin.Forms project. Now, I am bit confuse for consuming Rest API for this project. Performance matters.
There are many available but can any body please suggest me which should be best for Xamarin.Forms(.Net Standard)?
Microsoft Http Libraries or third party libraries like Refit, RESTSharp, PortableRest, etc.
Please suggest
All of these options are viable. I think the performance differences between these libraries will be marginal. So, it mostly comes down to what you feel comfortable with.
I like to use Refit because it will take a lot of redundant code out of your hands and you just have to focus on the contract. All the code for the actual calls is generated at compile-time (and thus won't impact your performance at runtime).
Also have a look at how well the library is maintained and if it's active. If you choose one that is already inactive for a while, chances are that you will start relying on older software versions which might not be what you want.
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I'm planning to make a multiplayer card battle game using Libgdx for the web, it uses the GWT engine for web deployment.
Is this engine secured? Can it be hacked? I don't want to waste my time learning it only if it will be hacked later on.
Thanks.
There is no engine as such. GWT compiles Java code to javascript which is then downloaded and run in the browser. By default this is obfuscated. It is difficult to modify but as the code is available in the browser it is theoretically possible to reverse engineer and modify it.
GWT puts no restrictions on how you implement server side web application code. It provides libraries to help with client to server RPC which you may choose to use or not. That means the server side security is down to you and is as secure as you want to make it.
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I am very new to scala and am trying to learn what are the benefits of scala over other languages . for my practice I like to implement a small live chat.
I picked scala because of its Acor Model to handle concurrency part of the live chat app.
But I like to learn that is there any disadvantage of using scala for developing a live chat ?
what is a better alternative ?
thanks
A chat service is almost the “hello, world” example of what is great about the actor model of concurrent processing! While Scala ships with scala.actor, they are somewhat deprecated and you should be looking at Akka.
The blog post “Getting started with Scala, Akka and Sbt: the chat example” gives a pretty good worked example of a simple chat server and how to build and test it.
The followup comment you've had notes Play. Play is a web framework which is actually implemented in terms of Akka. Play is perhaps the next place you should look if you want to take your command-line chat server onto the web.
Lift also uses a chat application as it's hello world. If you'd like to go from Akka's command-line example to a web application example, check it out. You can follow this tutorial to build it yourself.
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I want to create a REST based chat application in Java using Eclipse, but I have no idea how to start. How do I take care of resources, verbs, and HEATOS.
Check out this link, or this link, or this link. I would personally recommend Jersey. restelt is very powerful, but might be quite complicated. RESTeasy has more features than jersey, but it can also be a pain to configure outside JBoss, and their community is not as 'active'. I would recommend Jersey, their startup tutorial is very easy to follow.
You can also look at this book, and this book. Sorry, I can't provide any hard answers as I have no knowledge, your level of expertise on the subject. Hope this helps.
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I want to get into Scala and the lift framework, but since there is alot of confusion for me as a PHP programmer. So I got some questions to help me get started.
I want to setup a webserver that runs the lift framework with a Mongo DB backend where do I begin?
What is Apache Tomcat?
What is Jitty?
Is Comet an technology (protocol, design pattern?) or is it an project like Lift?
How can I setup Lift in Mac Os x as development enviroment, I understand I need Eclipse so I have downloaded it but what then? I don't understand how to install Scala.
The Lift wiki has a lot of information to get you started, and I would encourage you to join the mailing list. Where you will find many answers to questions already asked and you can of course ask more :)
Best luck using lift!
Try these series of tutorials http://blog.pboos.ch/2011/03/lift-tutorial-1-dev-environment-setup/