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0
votes
2answers
116 views

Real time data synchronization techniques between two systems

I need to come up with a design for real-time data update from a COTS product (a Point of Sales system) to a custom-built .NET application (an Inventory Management system). Particularly, any sales ...
1
vote
0answers
28 views

Android network Lib development

I have to develop an Android library that should frequently communicate with a server in the background. Access to the lib Object should be guaranteed everywhere in the Apps that will use it, so I ...
0
votes
0answers
39 views

Web Services and Computer Services to access low level system functions

So I think I'm in the right place to ask this question. Its fairly conceptual. I love web development, I work in ASP.NET MVC 3/4/5 C# and have created industry standard applications such as CRM's and ...
1
vote
3answers
228 views

MVC: What is the difference between a model and a service?

Why in some frameworks the logic layer is called "Model" whereas in some it is called "Service". Are they different from each other or just different by naming conventions? UPDATE 1 The reason I'm ...
2
votes
0answers
244 views

Is this any form of service pattern, some other pattern, SOA or just an anti-pattern?

I'm going to set out a scenario/pattern I've encountered and then I have a few questions pertaining to it. During an MVC request in a web framework (PHP, Laravel in my case), if I have an abstract ...
2
votes
1answer
130 views

Moving business logic from services to classes?

I have a Grails application with a number of services that are starting to get very large. The flow in the majority of my service methods is Database read (Returns DBCursor from MongoDB) Iterate ...
0
votes
2answers
300 views

Android Design - Service vs Thread for Networking

I am writing an Android app, finally (yay me) and for this app I need persistant, but user closeable, network sockets (yes, more than one). I decided to try my hand at writing my own version of an ...
3
votes
3answers
123 views

Is it bad practice to have FooObject and FooObjectSummary?

I have a service where users can upload/download/replace/delete files. These files have about a dozen attributes that are saved to a SQL Database. Periodicaly throughout their session they will have ...
0
votes
1answer
78 views

Services in Model Layer

I understand services should have no state and no business logic. How can you implement a service like AuthentificationService considering these rules? All the methods in a service should be ...
3
votes
1answer
582 views

Hosting long-running worker inside IIS

Is it possible to host a long-running worker inside ASP.NET application? The worker (for it's a windows service) is reading from a queue sending messages to a WCF service. Would it be possible to run ...
5
votes
2answers
4k views

How to manage 2 DAO methods in a single transaction?

In an interview someone asked me : How do we manage 2 transactional/dao methods in a single transaction. Desired capabilities: If anyone of them fails we need to rollback both methods. Both of the ...
30
votes
6answers
11k views

How essential is it to make a service layer?

I started building an app in 3 layers (DAL, BL, UI) [it mainly handles CRM, some sales reports and inventory]. A colleague told me that I must move to service layer pattern, that developers came to ...
5
votes
2answers
487 views

Amazon SOA: database as a Service

There is an interesting interview with Werner Vogels which is partly about how Amazon does Service Oriented Architecture: For us service orientation means encapsulating the data with the ...
4
votes
3answers
161 views

How to handle errors back in an API environment

We're discussing the best way to handle errors in calls to a method. We have a credit model where we allow users to deduct credits for certain actions. We'd like to make a call to: ...
3
votes
5answers
309 views

Is It OK to Develop Against a 3rd Party Library You Discover?

If you find out a way to interact with a web service API that is not publicly documented as available, and can emulate it within an application you develop, is it illegal to do so? Furthermore is it ...
2
votes
1answer
107 views

Best design for a memory resident tool

I apologize if this tends more toward design that programming, but here goes. What design would you recommend for a database that is Memory resident Must run on windows, linux and (at a stretch) ...
7
votes
3answers
13k views

Multi-threading in C# .NET Windows Service

I am writing a Windows Service (using C# .NET 3.5 VS2008) and my requirement is: When the Windows Service start - it performs record check operation (in Database) @ every 30 second interval (I have ...