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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4answers
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Call the database every time, or create an object in memory, and if so, how and how often to update?

I'm creating an app in javascript/nodejs and using neo4j as database. Let's say I have an entity User in my database. It has a bunch of properties, like boxes_collected and places_visited, which keep ...
6
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2answers
1k views

What is Component Oriented Programming, and how is it different from OOP? [closed]

What exactly is Component Oriented Programming, and how is it different from Object Oriented Programming? Thanks
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1answer
63 views

Separate domain entity in small ones

I have the Customer entity, this entity has a huge list of attributes, so you are thinking in separate in small entities (for example: "basic info", "document", "declarations", etc). This approach ...
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4answers
2k views

iOS chat application design, sending/relaying the message over to the end user

I have a design question. Let us say you were tasked with building a chat application, specifically for iOS (iOS Chat Application). For simplicity let us say you can only chat with one person at a ...
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4answers
2k views

Front-end structure of large scale Django project

Few days ago, I started to work in new company. Before me, all front-end and backend code was written by one man. As you know, Django app contains two main directories for front-end: /static - for ...
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3answers
297 views

Why should an “Order” object have a “Status” property?

I always see standard Order classes implemented with a "Status" property, but I don't feel comfortable with that. Isn't the status a property of the fulfillment process instead of the order itself? ...
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1answer
150 views

SOA: should I always consider it? [closed]

While I think how to direct the future development: Mini-introduction As a fixed rule, I start with SOA (and REST as protocol) then I work on the interfaces (and that interface is a customer of my ...
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1answer
444 views

Where does non-MVVM code belong in an MVVM app?

By non-MVVM code, I mean things like highly generalized components, like one with common extension methods for CLR types, and other 'homeless' helper classes etc? I have a Core project that most ...
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1answer
241 views

What did machine code for 4-bit architecture look like?

I don't know how a 4-bit instruction could be enough to do something so I read about the Intel 4004 and it says that it used 8-bit instructions and then I can understand how opcode and numbers has ...
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0answers
388 views

How to integrate unit testing process into legacy software development process? [duplicate]

I'd like you to share your insights of how have you successfully turned the direction of rotting legacy code base to modular application design where it's easy and useful to add unit tests? What I'm ...
5
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2answers
415 views

How to Know When to Stop Designing? [duplicate]

First some backgrounds, I'm interning at a company that makes parallel processing hardware. We're currently working out the design for a component of our driver that is supposed to evolve over a few ...
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10answers
11k views

Best practice or design patterns for retrieval of data for reporting and dashboards in a domain-rich application

First, I want to say this seems to be a neglected question/area, so if this question needs improvement, help me make this a great question that can benefit others! I'm looking for advice and help from ...
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2answers
3k views

Why does java.util.Calendar use static factory methods?

It is considered better to have a separate factory class than having static methods in same class. See this question. But the standard API uses both approaches. Separate factory: DatatypeFactory....
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1answer
697 views

The user interface in a clean architecture with client / server model [closed]

I have been reading (and watching presentations) about subjects like: DDD, TDD, BDD, SOLID (principles), design patterns, clean code, clean architecture, agile project methodologies. All in all I ...
1
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2answers
241 views

How to determine the better design?

What do I need to consider to determine which design I choose when I have the following scenario? There are two cases to considerer; Given T a generic class, I have to do something with multiple T'...
2
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1answer
71 views

Webservice Design: benefits of piping use-cases to URL rather than using search param's, or vice versa?

I've gotta build a webservice for employee information, and I'm trying to plan it out. To clarify, we already have a REST-ish service for People and a separate REST-ish service for Companies. This ...
4
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1answer
911 views

Loose Coupling Presenter to View in MVP

We work in a Java shop here and our web application uses an implementation of the MVP architectural pattern. Our manager comes from a .NET world, where he has been exposed to the MVVM design pattern. ...
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1answer
716 views

How do I architect zip code & distance calculation functionality?

I am building an app using MVC 4/Razor and EF 4/ .NET 4 in which it is possible to search items by zip code and thus retrieving items only a certain distance from your current zip code. I have a class ...
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2answers
411 views

Visualizing a complex software application [closed]

Question What is a good way to go about visualizing a complex software application? Are recommended software applications that can be used for this purpose? Background About 3 years ago, I ...
5
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4answers
368 views

How can I share data across several websites?

I am trying to develop a simple system for sharing data across several websites. Most of them are developed in PHP while some are developed in Wordpress/Drupal. Redundant information is spread across ...
7
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2answers
6k views

Why separate class CommandHandler with Handle() instead of handling method in Command itself

I have a part of CQRS pattern implemented using S#arp Architecture like this: public class MyCommand { public CustomerId { get; set; } // some other fields } public class MyCommandHandler&...
2
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1answer
260 views

Structuring asynchronous javascript code

I am working on an application that heavily depends on asynchronous data operations. I am dealing with those through promises. However, while my code works, I have the feel that it is getting chaotic ...
0
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0answers
118 views

Report generator windows service polling database for work

I'm building a new report generator for our in-house survey system. (No I can not use any off-the-shelf software. These are highly customized reports.) I want to use Topshelf to host the generator as ...
2
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2answers
191 views

Distribution of Event Listeners in a Distributed Service Oriented Architecture

I have a service architecture composed of services that service common areas of the application. Examples of services would be: AccountService (manages client accounts in the system) BillingService (...
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1answer
403 views

Recommended architecture for an interactive table widget with multiple behaviors in Javascript / jQuery

Use case: For an administration UI, I want an interactive table widget with a number of behaviors: Collapse / expand (yes, this means the rows are a hierarchy) Update of data in a child cell based ...
5
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2answers
726 views

Game server code design

I'm designing a multiplayer game server where the players are in rooms. Right now I have classes to take care of the client, networking, etc. I'm struggling however to find a design for this Room ...
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1answer
323 views

When to use non-embedded databases over embedded databases [closed]

We are trying to start a web base project that need to develop based on MS technologies such as C#,.net, IIS etc. This is a web application suppose to sell as a product with a single installer. Now ...
1
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1answer
3k views

Mobile development project architecture model/pattern

I would like to hear some improvement suggestions for mobile development (Android/iOS) project architectures. I would like to go for a "safe" design, modular and that can be easily maintained in time. ...
0
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1answer
115 views

Do we have any special design considerations for maintaining anonymity in an application?

This is an open-ended question which I am analysing while doing some fun projects in leisure. Websites like Google, Facebook do store user activities and perhaps sell them or use them for ...
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2answers
237 views

Should db be mapped directly to the UI or should there be multiple layers of enties/models with mappings to/from each?

I would like to know arguments for/against this concept. Technologies in use from the bottom up: MSSQL 2012 DB (exclusively accessed via sprocs) Entity Framework WCF Web Service ASP.NET Webforms ...
6
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1answer
1k views

OOCSS / BEM / SMACSS architecture

I've been working through this article to organize my front-end code. It references articles on BEM / SMACSS, which in turn reference other articles. I'm really trying to understand what the best ...
2
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1answer
330 views

Where do service implementations fit into the Microsoft Application Architecture guidelines?

The guidelines discuss the service layer with its service interfaces and data/message/fault contracts. They also discuss the business layer with its logic/workflow components and entities as well as ...
0
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2answers
3k views

Model-View-Controller — Where does a factory class go?

I'm working (slowly) on a small Flask project. One of my models is a class called Post, which is a lightweight namedtuple. Post objects are created by a PostFactory, because creating a Post involves ...
4
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4answers
2k views

Building a distributed system on Amazon Web Services

Would simply using AWS to build an application make this application a distributed system? For example if someone uses RDS for the database server, EC2 for the application itself and S3 for hosting ...
21
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6answers
3k views

Why did the team at LMAX use Java and design the architecture to avoid GC at all cost?

Why did the team at LMAX design the LMAX Disruptor in Java but all their design points to minimizing GC use? If one does not want to have GC run then why use a garbage collected language? Their ...
2
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1answer
373 views

Why aren't Entities allowed to reference other entities inside an aggregate except the root?

I have read in several places this following rule concerning Aggregates: Entities in one aggregate can hold references to any other Aggregate Root, but never to an Entity or Value Object inside ...
0
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1answer
181 views

Several interdependent models, each with several data sources — how to avoid hell and nightmare

I'm currently working on a project that requires a complicated model structure and I'm struggling with picking the right architecture. First of all, there are several interdependent models. Change in ...
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1answer
297 views

What is the best implementation strategy for this html + javascript widget?

The Problem I came up with this select-box variant in answer to a question on UX.SE: http://ux.stackexchange.com/a/48951/16187 However, working out how to implement it has been driving me mad ever ...
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3answers
291 views

Ways of developing for small system. What is expedient?

I'm developing a small system for internal automation. I use asp.net webforms and faced with a choice: develop a system architecture in an object-oriented style (development becomes more difficult ...
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1answer
152 views

Need Advice About A Specialized eCommerce System [closed]

I'm doing requirements/systems analysis on a particular project and could use some advice. PROBLEM: The project is for an organization that has a number of suppliers, with each supplier having up to ...
7
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1answer
916 views

How can we calculate Big-O complexity in Functional & Reactive Programming

I started learning functional programming, I am trying to compare between different algorithms that are written in an imperative, functional , parallel programming and using Collections and Lambda ...
2
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1answer
194 views

Comparison between ATAM method and analysis tools provided by ADLs

This is one of my assignment for this semester. And just to be clear, this question is not about the answer to my assignment as I have already finished it, it is more about the sanity of the question ...
4
votes
1answer
307 views

Game development design patterns and architectures? [closed]

Some friends and me wish to develop a 2D game just for the experience of learning this paradigm. We are all software engineers with experience in business apps, but we are unsure if the typical design ...
1
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1answer
2k views

Should we always write Defensive null check in code? [duplicate]

Are there any scenarios where we should not write defensive checks for null? Should we write defensive code or check for NULL every time we have passed a parameter or received a value back from a ...
2
votes
2answers
89 views

We have a custom program that generates all the stored procs and classes for the Data Tier. Where will I put the generated classes?

This is more of an architectural question regarding MVC and Data Access: We have a custom program that generates all the stored procs and classes for the Data Tier from the MS SQL database. It's ...
2
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1answer
420 views

What architecture to use for AJAX calls?

I am working on a website with PHP as backend. There are things from the front-end which I'd like to accomplish using AJAX calls. Which of these methods should I use to design them and why? Call to ...
8
votes
2answers
2k views

What's the difference between robustness and fault-tolerance?

Systems / programs / distributed algorithms / ... are often described with the predicate robust or fault-tolerant. What is the difference? Details: When I google for +robust +"fault-tolerant", I ...
3
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1answer
1k views

Thoughts on refactoring a generic DAO

I have designed a generic DAO in Java and am having confusion about whether to refactor it to different design or not. PS Don't say to use already existing 3rd person framework. I know there are some ...
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1answer
869 views

Is it an implementation of a stateful mechanism for Rest API authentication?

In many articles about Rest API's best practices, it is recommended to not depend upon sessions on server side since it leads to a stateful mechanism. I currently use Play 2.2 framework, with a ...
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1answer
170 views

Further decoupling using static libraries

I've been thinking for a while about reasons that prevent a lot of programmers — myself first of all — from writing clean, modular and expressive code while developing, for example, CocoaTouch apps. ...