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11
votes
1answer
598 views

Migrating a Grails application to Scala Play/Spray

We have a moderately sized Grails web application using GORM/Hibernate over PostgreSQL and GSPs serving HTML, and also a few REST APIs. We are standardising on Scala, and would like to migrate this ...
8
votes
1answer
392 views

How can I best organise a Jekyll + Bootstrap + Git site?

So after many many many years of building sites from scratch (and doing a lot of the lifting myself) I've dipped my toes into two projects that have been around for a few years that I've been avoiding:...
7
votes
0answers
590 views

Is there a reasonable way for a TypeScript class to derive from a Dojo/Dijit class?

DefinitelyTyped has a Dojo solution which uses named modules and may work with legacy Dojo and explicit typing, but these declarations do not facilitate TypeScript import since there are no anonymous ...
7
votes
0answers
1k views

Caching Strategy: WCF Buffer pooling and size

I am currently trying to understand the best configuration for caching. I am using Azure In-Role caching (currently Colocated, but Dedicated at a later point) in a Web Api 2 application in .NET 4.5.1....
7
votes
0answers
401 views

Facebook authentication with an Authoritative Server for a Flash Game

I'm working on a multiplatform game in Flash. This game utilizes Photon Server for authoritative physics and user statistics tracking. I'm looking to leverage Facebook authentication as an alternative ...
7
votes
2answers
774 views

Injecting data processing logic into class

I want find more elegant and appreciate way to inject processors into CommandProcessorDispatcher class. Or it can be another one solution (the goal is separate each command processing logic to ...
6
votes
4answers
2k views

Minimum steps to make all elements equal

Given an array A of N positive integers (N <= 20), we have the following operation. For any two consecutive non-equal elements, we can replace the larger number by the absolute value of the ...
6
votes
1answer
728 views

Order and filter Server-Sent-Events in angular.js eventsource

I have a Client in AngularJS where I consume multiple SSE (Server-Sent-Events) in Java from the Server Side (there are multiple endpoints in different web servers in the backend). Diagram link I ...
6
votes
1answer
347 views

Accessing i18n objects from different scopes

I have been building a personal framework of mine which started off as a way to learn the MVC pattern and has progressed now into something that I like more than most frameworks out there (which is ...
6
votes
3answers
428 views

Angular View Model Validation

The view model seems to be the most appropriate place to perform validation yet Angular seems to be pushing me down the popular form validation route. Why Model Validation? DRY - Applying validation ...
6
votes
1answer
1k views

Combining GitHub and TFS / Visual Studio Team Services

I wonder if it's possible to combine Visual Studio Team Services and/or TFS with a GitHub repository. We think both products have their own advantages and would like to work on one repo within our ...
6
votes
1answer
639 views

Entities (DDD) when using CQRS on Akka

When using Akka, CQRS style, is still there a place for Entities? Or does everything now go to Aggregates, implemented as Actors + Value Objects. I notice that most entities are written as mutable ...
6
votes
0answers
694 views

Implement FBP / Dataflow programming in VBA?

Intrigued by Flow Based Programming a la J Paul Morrison. I wonder if one can implement FBP in Excel/VBA. I searched quite a bit for a Basic-Lang FBP implementation to no avail. I've looked at some ...
6
votes
5answers
2k views

Write data to SQL Server directly from BizTalk or use external service?

An external source will be sending us XML data that BizTalk will pick up and transform into an internal schema. We need this data to be loaded into a SQL Server database as we're going to expose some ...
6
votes
0answers
87 views

When connecting to a server using the DRDA protocol, is it true that the first Client-To-Server command MUST be EXCSAT chained with ACCSEC?

When connecting to a server using the DRDA protocol, is it true that the first Client-To-Server command MUST be EXCSAT chained with ACCSEC? I found 2 different answers when I googled it. If you look ...
6
votes
0answers
123 views

XDIME for Mobile Applications

I'm involved in a project that requires to mobile-enable some previously developed Portlets. The Portlets are deployed in WebSphere Portal, and the container offers a technology called IBM Mobile ...
6
votes
0answers
659 views

Design thoughts on a schema based request object for CXF endpoint

Trying to seek design suggestion on a schema based request object for a CXF endpoint. I've created a CXF SOAP endpoint which takes the following object as an input. The request object will have ...
6
votes
1answer
195 views

Should an interface covariant on T ever implement an interface invariant on it?

I was reading through the Hacklang docs on Collections, and came across this curious definition [paraphrased slightly]: interface KeyedIterable<Tk, Tv> ... interface ConstVector<+Tv> ...
5
votes
0answers
325 views

Concurrent fault-safe data structure

I am building an application that aims to process ~10M data items per second. Each item is exactly 42 bytes small (including a sorting key) which means the total data rate will not be big 420 MB/s. ...
5
votes
1answer
498 views

Managing private NPM packages and CI/CD

At work we have an application that is run directly on dev machines, but deployed to Docker swarms (a QA swarm and production swarm). The code and CI/CD pipelines are all in GitLab CE. It uses ...
5
votes
0answers
126 views

Why does GHC represent recursion in Haskell with recursive binders instead of a fixpoint operator?

GHC's Core data type represents recursion with recursive binders in the Let constructor; as I understand it, all let expressions in Haskell are effectively let rec expressions. Why does GHC use this ...
5
votes
0answers
226 views

Different kind of checked exceptions - Guarantee to only throw X

It is a widely held position that checked exceptions as implemented in Java are a bad idea. If you mark a method as throwing, calling code has to either catch the exception, or be marked as throwing, ...
5
votes
1answer
536 views

What is the best way to store and manage client <> server <> server and back session information and authorisation?

I have scenario, where I have javascript front-end connected using AJAX communicating with Django-Rest-Framework backend. Users authenticate using JWT tokens. Backend is acting as chatbot and ...
5
votes
0answers
588 views

Zeromq bidirectional asynchronous transmission?

I have a system which consists of two applications. Currently, two applications communicate using multiple zeromq publish/subscribe sockets generated for each specific type of transmission. Sockets ...
5
votes
0answers
540 views

Storing OAuth2 data in Mongo?

Our system has users but we want to perhaps allow some users to be able to use our API service. I'm looking at using OAuth2 for authorization. As it's going to be (trusted) machine-to-machine access I ...
5
votes
0answers
324 views

Rails on AWS Elastic Beanstalk - limitations

I have been looking at AWS Elastic Beanstalk service for the deploymeny of my rails application, and I came to think it was actually a bad idea given some specific requirements of my application. But ...
5
votes
0answers
189 views

Finger Paint path gets huge over time and slows the app

So I am writing a Finger paint app. I have multiple color which user can select. I save the path and paint information inside an array. ArrayList<PaintPath> arrayPaintPath = new ArrayList<...
5
votes
2answers
822 views

Event driven programming in Haskell

I'm new to Haskell, so this is more a high-level conceptual question. I've read this: https://wiki.haskell.org/Real_World_Applications/Event_Driven_Applications and it has this: run :: Domain -> [...
5
votes
0answers
598 views

How to efficiently query movies with characters via The Movie DB API?

I have a sort of whiteboard style question about efficiently querying The Movie DB API to find a list of characters in movies. My overall aim is to: Search for a movie by title (1 request) Look up ...
5
votes
0answers
3k views

Option<T> functional type implementation and scenarios

Have you ever being implementing Option<T> functional type? It is discussed here: https://app.pluralsight.com/library/courses/tactical-design-patterns-dot-net-control-flow/table-of-contents ...
5
votes
0answers
83 views

Relationship between a mixin and its master invokation

I haven't studied Smalltalk or Strongtalk and am just trying to get an overview of the semantics of interfaces and polymorphism in O/O languages, particularly Dart. In the 2002 paper titled Mixins in ...
5
votes
1answer
397 views

Clarification about Event Producer in StreamInsight

I need a small clarification about StreamInsight, I know by doc's that StreamInsight can handle multiple concurrent Events. But will the event producer be a separate function, for ex: I need to watch ...
5
votes
1answer
644 views

Directly query database vs. Using web service

I'm a junior programmer, am working on a WPF application that will deploy to ~50 users. We basically are streamlining all of his charting/tracking of client data. Each user will probably make about ...
5
votes
1answer
1k 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. ...
5
votes
1answer
909 views

Alternatives to Pessimistic Locking in Cluster Applications

I am researching alternatives to database-level pessimistic locking to achieve transaction isolation in a cluster of Java applications going against the same database. Synchronizing concurrent access ...
5
votes
2answers
136 views

Which data structures and algorithms should I consider for a directed rooted tree that has high churn?

I need to represent a directed rooted tree in memory. What would be a good data structure and algorithms for performing main actions, given the particulars listed below? Size: ~40,000 nodes. But ...
4
votes
0answers
72 views

MQ integration: How to notify consumers of upcoming message format changes?

We have multiple microservices communicating over MQ. As MQ messages are the interface/contract between the services, whenever we make changes to the MQ message published by a service we need to make ...
4
votes
2answers
820 views

Should AutoMapper be used to Map from ViewModel back into Model?

Should AutoMapper be used to take data from ViewModel and save back into a database model? I know the opposite practice is good software practice: to have Automapper to extract database models, and ...
4
votes
0answers
285 views

Data durability guarantees in Kafka

Is it wise to use kafka as the 'source of truth' for mission critical data? The setup is: kafka is the underlying source-of-truth for the data. -querying is done on caches (I.e. Redis, ktables) ...
4
votes
0answers
154 views

Implementing new project to communicate with old ones. The correct way

I'm not sure if this is the right place to post this (I'm fairly new, but Stackoverflow and Superuser suggested this site for my question), but here goes. I currently have the following: A frontend -...
4
votes
4answers
329 views

Context separation in microservices

I work in a small company and we are about to delve into the Microservices world. As expected, we are hitting a few bumps. Let us focus on a small bounded context: work order. This bounded context is ...
4
votes
0answers
287 views

Should an SPA use OIDC's Implicit flow or Auth Code flow?

We are developing a new Angular SPA which leverages Keycloak for its SSO abilities using OpenID Connect (OIDC). The app is currently designed to use the Implicit flow to retrieve short-lived access ...
4
votes
1answer
713 views

Git Flow w/ VSTS Build Pipelines

I am trying to marry the git flow approach (w/ dev, test, uat, staging, prod env) & automated build and releases in Visual Studio Team System (VSTS). Slightly struggling due to VSTS needing a ...
4
votes
1answer
385 views

Continuous Deployment Database Project VSTS

Looking for continuous deployment strategies regarding SQL server database projects targeting Azure SQL using VSTS. My scenario... Using VSTS for CI/CD Using a SQL Server Database Project to define ...
4
votes
0answers
335 views

Can Event Sourcing and an API Management platform leverage each other?

I'm evaluating the use of Kafka to implement Event Sourcing in a microservices environment that already makes use of an API Management platform. I was wondering if it is common and/or considered a ...
4
votes
1answer
431 views

Handling common code among presenters

I'm facing some issues related to code duplication when following MVP architectural pattern in an Android project that I'm working with. My project structure is separated by packages: data, domain, ...
4
votes
0answers
427 views

Class table inheritance using Slick: always an anti-pattern?

My application's model includes a number of entities that share many common properties, and are operated on by many of the same classes. If I was using an ORM, I'd define an abstract class with the ...
4
votes
0answers
1k views

Understanding the data flow in Spring REST layered architecture

I am new to Spring as well as layered architecture. So am a bit confused as how data flows among the different layers. What so far I have understood is: Layers: Controller (which accepts requests) ...
4
votes
1answer
236 views

Boundaries of unit testing between my code and a library or sub-component

Background: I am new to testing in general, and have been studying it in context of JavaScript, specifically React.js, front-end development (actually new to this as well). For the question, I have ...
4
votes
1answer
671 views

Branching a subdirectory while keeping commits from other directories

I currently have a single pre-existing Git repo for a client/server solution that contains three subdirectories for 3 sub-projects: /client - An Angular2 SPA application (client-side TypeScript) /...

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