What are the advantages of NServiceBus over MSMQ? [closed] - msmq

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I know this as been asked but couldn't find an answer that I understand...
Some people told me about the main thing are sagas, but it doesn't look such a big advantage to make me spend my bucks on NServiceBus when I already have MSMQ....

That's a little bit like asking "why do I need ASP.NET MVC when I already have HTTP?"... a little tongue-in-cheek, but still with a lot of truth in it.
NServiceBus gives you message serialization, a sensible threading model, routing, and several ready-to-use messaging patterns out of the box.
MSMQ gives you... message queues! And a fairly complicated API with many low level options that give you no real pit of succes...

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Which one is best to consume Restful WebServices for Xamarin.Forms? [closed]

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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.

Why is REST called an architecture style? [closed]

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Why is REST an architecture style whereas SOAP is considered as a protocol? Please explain.
Architecture is about high level design. REST is an example of that because it is only a set of design guidelines like that your API should be stateless. It doesn't tell you exactly what language to use or what your code should look like.
Other examples of architectural questions are
How should my modules communicate?
How should I structure my data?
What guiding principles can I apply?
Non examples are:
What is the name of the function that allocates memory?
Do I use i++ or ++i?

Entity Framework with Waterfall or Agile? [closed]

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I've seen plenty of posts on the pros and cons of the EF but finding quite hard to find anything on the relationship between EF and project management methodologies such as Waterfall SDLC and Agile?
Would anyone have any links or information on the above? Thanks.
Frameworks and methodologies are typically orthogonal.
The only (indirect) relationship is that Agile methods would have you build your application to be decoupled from the persistence mechanism altogether. In fact, you would delay even using a database until you have a user story that requires that you have one. This would force you to keep the two decoupled, leaving your options open.

REST based web chat in java and eclipse [closed]

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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.

Is there a systematic approach to avoid the 3 pitfalls(below) of software solutions? [closed]

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Developing software solutions which already exist and are available for re-use (either commercial or open-source). AKA "re-inventing the wheel".
Same as above, but your solution being broken. AKA "re-inventing the square wheel".
Developing solutions for problems which do not exist.
Again, I'm interested in a more formal approach, e.g. TRIZ
Doing some research beforehand (1) and investing in solid software architecture (2,3) usually helps :)
When you're planning to develop something you always need to calculate the benefits of doing some and the things like the ROI.
You could read more about this in Agile Estimating and Planning by Mike Cohn
Local Market Research
Internet Research
Google Metrics (Seeing what the Google Count is)