The high level design and description of software systems frequently characterized by having large quantities of persistent data that is accessed concurrently.

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3answers
117 views

Location of Solution Components - Centralisation versus Multiple Instances versus Libraries

We're currently in the early stages of building a substantial system, aiming to do much of what several existing systems do, in a flexible, extensible, maintainable way. It will support multiple ...
3
votes
2answers
771 views

Best practice refactor n-tier into vertical slices architecture

What work path do there exist to identify reasonable vertical slices of a classic n-tier platform code base and infrastructure (enterprise size)? Regardles of refactor or a new solution I think there ...
2
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1answer
982 views

When using Java Persistence API (JPA), which layer owns the entities?

When working with annotations on entities in JPA, do these entities belong to the model layer or the persistence layer? Does there have to be some kind of clone of the entities (simple JavaBeans) in ...
2
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2answers
47 views

How to ensure the success of processes after a deadlock exception occurs?

No matter the programming language is and whatever the database is, the concept should be the same: I have 2 threads, each locking some database entities and inserting new data in database. Let's ...
2
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1answer
159 views

Does DDD make sense for apps which mostly present data?

I'm responsible for designing a dashboard and data manipulation front-end for a sale transaction database and am not quite sure what type of architecture to use. The database is populated by an ...
2
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1answer
158 views

Data Transformation Pipeline

I have create some kind of data pipeline to transform coordinate data into more useful information. Here is the shell of pipeline: public class PositionPipeline { protected ...
2
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2answers
172 views

Principles of an extensible data proxy

There is a growing industry now with more than 30 companies playing in the Backend-As-A-Service (BaaS) market. The principle is simple: give companies a secure way of exposing data housed on premises ...
2
votes
1answer
326 views

Silverlight - modularity. Best way to physically separate binaries?

We are working on LoB app with lot's of content. XAP download will be rather large I think for one time download. I'm planning to break solution into separate projects. Not sure why - but I DO NOT ...
2
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1answer
439 views

Learning Sparx Enterprise Architect

I have a basic working knowledge of Enterprise Architect with 6 months experience. But I would like to learn how to use more of it. Anyone have a recommendation for a learning source or course?
2
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1answer
182 views

Benefits of integration platform

We are looking at introducing an integration platform. In the begining it is an extra layer and an extra cost. But after a while the service that a new system needs will be available on the ...
2
votes
1answer
281 views

Should I use a single platform for common services or modularize them?

I am designing a suite of web applications that have the same base functionality. That is, they all will know how to create and operate on widgets. The differences will be in their target audience and ...
2
votes
1answer
263 views

What is the advantage of using Direct Web Remoting over a REST web services design? [closed]

I have an enterprise Java web application deployed in tomcat. I am looking for ways to integrate a HTML & JS UI with the mid tier java code. So far, looking around I have found that there are two ...
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2answers
1k views

Should I cache the data or hit the database?

I have not worked with any caching mechanisms and was wondering what my options are in the .net world for the following scenario. We basically have a a REST Service where the user passes an ID of a ...
1
vote
1answer
177 views

Why are JOINS deprecated for a in-memory database?

Correct me if I'm misunderstanding. Refer to the following sentence: Stack Overflow copied a key part of the Wikipedia database design. This turned out to be a mistake which will need massive ...
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3answers
186 views

Let applications share a database or keep them in sync with web services?

We have decided to build separate applications for user authentication and user management. The reason is that the the former is a "this just needs to always work, and do so instantly" style service, ...
1
vote
1answer
3k views

What are the most commonly used enterprise Java technologies, and what would you want a non technical audience to understand about them?

I have been asked to give a presentation to a non-technical audience on what Java technologies are currently being used in the enterprise world. The goal is to give this non-technical audience the ...
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vote
4answers
616 views

Switch interface implementation using configuration [closed]

We want to allow the same core service to be either fully implemented or, as other option, to be a proxy toward a client legacy system (via a WSDL for example). In that way, we have both ...
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vote
2answers
160 views

Architecture advice for converting biz app from old school to new school?

I've got a WinForms business application that evolved over the past few years. It's forms over data with a number custom UI experiences taylored to the business, so I don't think it's a candidate to ...
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2answers
136 views

What is the Enterprise Architecture Pattern called for a web service wrapping a web service?

As part of a service orientated architecture (SOA) I've been asked to create a web service which itself acquires data from a third party web service. I'm to hide any implementation specific details ...
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1answer
179 views

Eventual consistency in Banking systems

I keep hearing people say Banking systems like ATM use Eventual consistency model for data synchronization, but I am wondering if it is true. Definitely the amount you withdraw might be delayed ...
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1answer
518 views

Entity framework and Eager loading and enterprise application with DDD aproach

We are trying to create an ASP.NET MVC 4 application using entity framework with domain driven development style pattern approach. As you can see in our part of domain layer, we have a complex design. ...
1
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1answer
101 views

Help Improve DB model/strategy, for use in refactoring SQL-ridden legacy code

Question: Which design pattern do I use to help me refactor legacy SQL code into separate classes? Goal Bring in concepts of data separation and database separation and also latest modern ...
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1answer
225 views

How to manage security of these self hosted web apis, to ensure that the request coming for accessing data is authenticated?

Let's pretend I am going to work on an enterprise application. Say I have 11 modules in the application and I would have to develop Dashboards for every role in the organization for whom I are going ...
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2answers
901 views

Audit trails and recording actions

Background A discussion that has come up at work recently is how we handle audit logging and the recording of events. We are integrating with a 3rd party app so triggers are a no no from the off so ...
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1answer
3k views

What is a best practice tier structure of a Java EE 6/7 application?

I was attempting to find a best practice for modeling the tiers in a Java EE application yesterday and couldn't come up with anything current. In the past, say java 1.4, it was four tiers: ...
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3answers
173 views

How should I host our scalable worker processes?

We are designing a new architecture for an enterprise business. The principles we've followed so far is not to develop what you can (possible buy and) deploy, ie, don't reinvent any wheels. In this ...
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1answer
286 views

Architecture for interfacing multiple applications

Let's say you have a Master Database and a few External/Internal applications that use WebServices to interface data. What would be your preferred architecture to interface data from and to those ...
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1answer
80 views

How to use ViewModels in a layered architecture?

I've got a Java application that is using a layered architecture, we have: presentation layer, business layer and data access layer. Our business layer uses the models to process the "requests". We ...
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1answer
216 views

How to design extension mechanism for java app

I have an application where I have a set of core features. The application itself HAS to work in core only mode. I would also want to make the application extensible such that, when certain ...
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1answer
4k views

Layered architecture using Entity Framework with different class libraries

Our business requirements required to create a layered and modular architecture. So I designed an architecture to make it as decoupled and as modular as possible. I will list my layers below ASP ...
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2answers
225 views

Should business services cross bounded contexts?

Firstly, I am following the convention that a bounded context is synonymous to a department, or possibly one department has 1 to many bounded contexts. We have a client consultancy department that ...
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1answer
56 views

admin-over-clients application

I have the same web application running on several different servers. Now I want a central place to administer everything in one web interface. What is the best way to do this? Should I provide a ...
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1answer
446 views

Switching to Windows Identity Foundation - Should we use the SQL Server role and membership provider?

We have an application which uses SQL Server as the back end. It was client server based, now it will be web based. Our implementation to logon was a user ID and password hash/salt stored in the ...
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0answers
86 views

Event Sourcing for Enterprise Applications

Is it viable to store information a la event sourcing when dealing with large enterprise applications ? I know lokad has been using it for a long time, but they are not in the ERP business I have ...
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0answers
51 views

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

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! In my experience, there are two ...
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1answer
3k views

Should I use a workflow engine?

I need to add some new features to a PHP application. It is to follow the steps of a order. A process create some orders, the order goes to confirmation, then if approved is sent to a provider, later ...
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2answers
660 views

Enterprise Architecture Certification [closed]

I want to make the step up from developer to enterprise architect. I have 13 years experience in various environments, from SME line of business apps to investment banking enterprise systems. I'm ...
0
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2answers
72 views

Sending a notification to each participant 3 hours before the meeting starts

Let's assume an application that deals with meetings where some users will participate. What is an efficient way to achieve this use case: 3 hours before the meeting should start, one reminder mail ...
0
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1answer
97 views

Single database, multiple system dependency

Consider an environment where we have a single, core database, with many separate systems using this one database. This leads to all of these systems have a common dependency, which ultimately ...
0
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2answers
587 views

Can Dependency Injection used as an alternative to Reflection for creating instances

There is a piece of .net C# code which use Reflection to create an instance using Activator.CreateInstance(). This is an old piece of code and runs on the top of Enterprise Library. Is it a better ...
0
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1answer
311 views

The problem of dependencies management

Let's consider the next situation: We have a module A which has a class Crt570 intended to interact with a device. We have a module B which uses Crt570 in the class called M100Communicator. We have ...
0
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1answer
64 views

Dependencies between services in pipeline [closed]

I am working on creating a new data processing system, where there are multiple steps each fulfilled by different services. For example, there is a scheduling service that kicks of something, an ...
0
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1answer
79 views

Should Form Object be considered a DTO?

I got this from one of online video tutorials. Author binds form data not to Value Object directly, but first to validable DTO, and THEN to Value Object, using service. Example: package ...
0
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2answers
96 views

What layers reference each other in a multi layer design? [duplicate]

I'm creating a project and I'm having difficulty and contrasting opinions on how to do things when it comes down to separating layers. I'm not fully sure what layers should reference each other. I ...
0
votes
1answer
76 views

Multiple intranet/internet systems partially working on same data - database strategy

We are starting rewritting our apps (Internet portal, millions of unique users and few CRM/ERP systems, few hundred users) and we have a huge decision to make now. We are going to write them mostly ...
0
votes
1answer
1k views

SOA in .NET 4.5 with MSMQ Durability

I have been doing some investigation regarding ASP.NET Web API. I have enjoyed using the WCF REST template to create new RESTful web services, and Web API seems to be a cleaner iteration on that. ...
0
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2answers
243 views

Should Business Interfaces be part of the Model layer?

In an oriented-services enterprise application, isn't it an antipattern to mix Service APIs (containing interface that external users depends on) with Model objects (entities, custom exceptions ...
0
votes
1answer
49 views

Communication between Multiple Presenters in MVP

I'm designing an application using the MVP pattern, but a few of the edge cases for the system rely on communication between multiple presenters. View 1 calls Presenter 1 which does Operation A ...
0
votes
1answer
75 views

Coordinating a complicated data migration process

A project I'm involved in has suffered a change in scope, and before I set about trying to cook up some homegrown solution, I'm wondering if there is something out there -- some framework, for example ...
0
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1answer
134 views

Observing progress of a distributed system

For a distributed system, there is a requirement of observing the progress of smaller applications on distributed computers (runtime 5 - 20 minutes). There is a web fronted, which right now only ...