The high-level design and description of a software system. Architectural design distills away details of implementations, algorithms, and data representation to concentrate on the interaction of "black box" components.

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229 views

Why HTML5 got rid of Rich Desktop applications? [closed]

I recently noticed that Rich desktop applications (I define it as an application running inside a virtual machine embded in a web browser, based on tools like Java Web Start, Adobe Flash or Unity web ...
1
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1answer
102 views

Data structure to use for time-optimized line-vs-grid check?

I am asking here because I feel that this question can be filed under the "algorithm and data structure concepts" category. Background: I have been recently assigned the task to design and develop a ...
2
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2answers
97 views

How to store one-to-many graph? Passing root or passing root and children seperately?

Suppose in the application, there is a type Teacher and a type Students. A Teacher may have a list of Students. So in design, class Teacher has a field of type Collection of Students (aka List). ...
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1answer
128 views

Best way to separate public API from internal implementation [closed]

I'm developing a little framework (in Scala) where I want to define clean and simple interface for the users of the framework. Some of theses interfaces have to be implemented by the framework itself, ...
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5answers
467 views

Should the View not perform validation?

I was reading "In MVC should a model handle validation?" because I was curious about where validation logic should go in an MVC website. One line in the top answer goes like this: "controllers should ...
2
votes
1answer
120 views

Struggling about the benefits of using a plugin approach in a Industrial Software Architecture [closed]

I'm trying to design an application, something quite generic over a .NET C# Stack. It's supposed to be an desktop application intended to control industrial equipment and to perform measurements and ...
12
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3answers
775 views

How to draw programmer's attentions in certain conditions?

Let's start with an example. Let's say, I have a method called export that depends heavily on the DB schema. And by “depends heavily” I mean I know that adding a new column to a certain table often ...
2
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0answers
192 views

Assembler vs Entity Translator and Entities vs DTO

I was hoping that someone could explain the exact difference between an Assembler and Entity Translator. Martin Fowler describes the Assembler as a sort of Mapper(?) which converts DTOs into Domain ...
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2answers
267 views

Understanding a project architecture

If I develop an application, I'll often use a project structure like this: MyApp.DataAccess.Implementation MyApp.DataAccess.Contract MyApp.Business.Implementation MyApp.Business.Contract ...
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0answers
72 views

Data Store Design for NxN Data Aggregation

I am trying to come up with a theoretical solution to an NxN problem for data aggregation and storage. As an example I have a huge amount of data that comes in via a stream. The stream sends the data ...
5
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3answers
300 views

Does Continuous Integration imply one monolithic VCS repo?

I am part of a small team which develops several internal apps for our company. We are in a process of becoming more Agile, this especially includes lots of automated testing. Now we are in a ...
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1answer
67 views

Would it be possible to create functional, object oriented or declarative architectures? [closed]

My question originates from the fact that the most common architectures are inherently imperative (i.e. the machine language is imperative). Would it be possible to create a computer architecture ...
2
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1answer
150 views

Using own ArrayList in general purpose C libraries, but allowing a different implementation

I've written a couple of libraries since beginning to use C again last year. One thing that still needs addressing in both of these is the correct use of array-based lists - hereafter, ArrayLists. At ...
2
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1answer
40 views

Identity propagation using Azure service bus

We currently have a platform with a SOA architecture in which the user's identity is propagated from the web application via middle tier services (REST and SOAP) until we actually query our data ...
1
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0answers
54 views

Advice on streaming architecture [closed]

I want to be able to stream my desktop to 1 other person (and in the future to possibly more people). The stream should be watchable from a browser or a mobile app (iOS, Android, Windows Phone) ...
2
votes
2answers
297 views

How to see Entity Framework code with ASP.NET MVC from a software architecture viewpoint?

Let's say I'm starting a Web Application project that uses a) ASP.NET MVC b) Entity Framework In terms of Software ARchitecture, correct me if I'm wrong, -1) Could I place all my Entity Framework ...
5
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5answers
628 views

Debug function input vs expecting code users to read the documentation - How far do I go? [duplicate]

I could write an endless amount of debugging code to handle the various components of input for a function, check that the correct data types are used, make sure things are decendants of the proper ...
1
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3answers
121 views

Service oriented web architecture speed

Imagine a simple service architecture setup: single server where I have one service acting as a REST API (PHP), another service for rendering frontend (nodejs), and maybe a database service. They all ...
1
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1answer
59 views

MVC .NET APP Program Structure [closed]

I am just building a MVC .NET application, eventually this will use entity framework and the repository pattern to structure the program. The first release however will only be calling other jobs that ...
3
votes
1answer
311 views

Onion architecture in client-server application

I'm staring new project, cross-platform. I want to use onion architecture there. It will be a simple game (tic tac toe), just for education purposes. This app will be client-server type. Now, I read ...
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0answers
40 views

Cost of cache coherency/sharing data across multiple cores?

If I have two CPU cores, one is writing a particular cache line and the other core wishes to Read Write the same cache line, what are the costs (in cycles) for doing so? I am a little unsure ...
4
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2answers
79 views

How can I have a variable timeout value based on machine performance?

I have a similar problem as Criteria for selecting timeout value?. But my question is slight different. Process A dependes on process B and has a timeout value of 5 seconds, sometimes process B might ...
3
votes
1answer
74 views

Coordinate access to resource between workers

I have a database accessed by an several servers, let's call them workers. These workers take one item from the database, do some operations on it and then update it back into the database. The ...
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2answers
329 views

Best x86 processor(computer) to learn computer architecture and assembly [closed]

I'm planning to build a computer as a hobby from scratch, with the least basic hardware possible in functionality so I can learn the basics of computer architecture and assembly language. I already ...
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0answers
304 views

Architecture for C# Chat Application - not sure if WCF is right

I had written a WCF based "chat/notification" system but I am questioning my decision if WCF is a good fit. I have an external 3rd party lib that calls my process when events arrive: public class ...
0
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1answer
107 views

Should DTO have validators?

I believe that DTO should be as dummy and easy as possible. However, after hint made by my friend, opportunity to validate data that is set in DTO sounds tempting. Let's have following example: ...
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2answers
165 views

Better application design - where to place interfaces

Where to place interfaces in a typical multi-layered app with DataAccess, BusinessLogic and an Endpoint modules? I propose 2 options In both cases there's only dependency from abstractions, but in ...
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0answers
68 views

Architecture of an extendable application

I am developing an embedded application on an ARM platform. I want to use ArchLinux as the underlying operating system and then create my own GUI. I want the application to be extendable (have apps if ...
3
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2answers
500 views

Understanding Flux pattern

I'm actually studying the flux pattern and there's something that I can't understand concerning the stores. What are they exactly? I have read many articles, and it seems that it concerns the ...
5
votes
3answers
253 views

What should my user object know?

I have an architecture problem/doubt and I'd like some insight on this. Context : We're in a mobile app that solely relies on webservice calls to be used. There can only be one user logged in at any ...
1
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1answer
199 views

Decoupled architecture in Android

I am building an app for Android that will have multiple data sources depending on who is using it. N-tier architecture with a repository pattern seems like the right way to go about this but I am ...
2
votes
3answers
175 views

How to simplify structure of a monitoring software that uses the Observer pattern?

I am working on a project where I have to monitor the status of an elevator. So far, my design looks like this: We are using a third party library to read and monitor real-time values from the ...
0
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1answer
103 views

ASP.NET synchronous commands handlers

A question about DDD, for validating a Proof Of Concept. Let's say we have a webpage that triggers a Domain Event. For instance, updating the status of a client after an interaction occurred on that ...
2
votes
2answers
94 views

How to reduce redundancy in a service implemented using multilayer architecture while maintaining consistency across the system?

Currently our service is implemented using a multilayer architecture dividing the whole service into three: API Business Persistence However this introduces a lot of redundancy within our system. ...
2
votes
1answer
174 views

Event Sourcing , sagas, bus and eventual consistency

I am currently learning about Event Sourcing via the book Microsoft .NET - Architecting Applications for the Enterprise. Event sourcing is, in my own words, an architectural pattern of storing ...
2
votes
1answer
343 views

Help understanding modeling in domain-driven design

I've been trying to learn domain-driven design (and similarly Onion Architecture) the last week or so. I think I've got an understanding of it, but like math, I suck at extracting all of the ...
2
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0answers
99 views

Architecture: mobile apps for different clients with their own dbs different servers?

My general feeling is that this is a question which must have been answered but I am struggling to find resources for it. I know little about mobile app dev but my knowledge of web services is pretty ...
1
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2answers
160 views

What are the differences between Event Sourcing and Service Layer pattern?

I am reading a book on architecting enterprise applications. In this book the Event Sourcing pattern is introduced which can be used as the "command" part of a Command and Query Responsibility ...
5
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2answers
195 views

Designing a ticketing system where the User and Administrator have similar but different functionality

I am designing a simple ticketing system in Laravel 4. The system will simply allow a User to create a ticket, and an Administrator to answer it. The User will be able to: View a list of his ...
1
vote
2answers
1k views

Repository pattern with service layer - too much separation?

I have an MVC site which uses the repository pattern. I don't feel like I'm using the MVC style enough, so I'm getting ready to re-architect some of it. But I'm also wanting to do it so if the ...
2
votes
0answers
103 views

Separate settings and implementation class hierarchies

We use XML serialization to store class settings. Each setting-class has (but doesn't reference) corresponding implementation-class. Therefore we can easily make a "settings dll" without any ...
1
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0answers
60 views

Metrics for when to use a hash value?

I am working on a project that requires a series of flat files. I will be doing some data checking against simple date like: ID;StatusCode So a typical file might be like: 13993;R 38293;A 19349;I ...
0
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1answer
121 views

How to design resilient web service clients?

I am writing an app that is supposed to talk to a web service. Let's say it's a chat app. It would need to receive a stream of new messages (so that they are pushed to the interface as quickly as ...
0
votes
1answer
361 views

What is an efficient data structure for syntax highlighting in text editors?

I'm creating a very small text editor in C++ with the ncurses library. So far, it works great. I have implemented the Gap Buffer data structure to make the editing more efficient than a line-based ...
1
vote
1answer
63 views

Disabling data entry, based on a set of rules [closed]

I work on an application that services a large hospital. The application allows users to create/edit/delete a series of data points that all relate to a specific drug being researched. Once the data ...
3
votes
0answers
128 views

Web framework architecture with non-blocking I/O

There's been a lot of news in the enterprise world lately, specially in the web, and I've decided to build a small web framework on top of Netty to learn more about asynchronous programming and ...
0
votes
1answer
69 views

Inject or not dependencies in a component based framework

I'm currently developing a small component-based framework the Android platform. The framework has some ready for use and some abstract (has some internal logic, but the developer needs to add some ...
1
vote
1answer
159 views

Design periodic batch notification system

Problem: I am trying to design a system which takes requests from customers in real time and log them in a database. For example - request to purchase an item. The customer then gets a unique ...
1
vote
3answers
395 views

How to design a class for a fixed-length id?

I'm building an app in C# that needs a fixed-length id, which is a string representation of a hex number. E.g. "0fa5" is an example of such an id of length 4. The length would not need to change ...
1
vote
1answer
173 views

Developing an Android application while dogfooding it

I started learning Java and Android development recently, and I'm learning by building a small app for myself. Nothing fancy, it's just a simple mileage tracker for my car. I know there are tons of ...