Questions about service-oriented architecture, or designing software as a collection of services.
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0answers
32 views
Microservices & Canonical model
When I was reading about microservices on this site, I came across the below statement. What is meant by a canonical schema? Isn't it same as domain model?
The Microservices Architecture pattern ...
12
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5answers
518 views
Autonomous Microservices, event queues and service discovery
I've been reading a lot about micro-services lately, and here are some of the conclusions I got so far (please correct me if I'm wrong at any point).
Micro-services architecture goes well with domain ...
3
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1answer
91 views
Should I have a single Microservice Instance when there are several versions of the same database
We have 25 instances of the same database facilitating different production plants in our organization. Basically, location X uses it's own copy of the database, location Y uses it's own copy, etc. ...
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2answers
128 views
monolith vs microservices for app idea
I have decided to start building a SAAS app. I wish to keep hosting costs low initially, whilst still providing a good user experience. Here are the components that will make up my app:
Front End
...
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1answer
143 views
Do you put business logic in your service implementation ? <comment on my design>
Today at work a colleague was looking at a piece of module I had written a month ago as a reference implementation.
I had written a WCF service which a Windows service was consuming.
I have a single ...
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0answers
49 views
Back end based on Microservices - concept
I plan to build a back end based on microservices. The following picture presents my current idea:
Two important features are:
uploading large text and/or video files
stream video - display user in ...
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0answers
14 views
Is a distributed database or distributed KV appropriate for replicating data on every node?
I have a "microservices" architecture, where many instances of the same server are running on different boxes. My question concerns synchronizing data between them.
I have nodes (boxes) N0 through ...
0
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0answers
85 views
Looking for pros/cons on using OWIN vs. a simple hand-rolled token based auth
We are wanting to implement an API to be used internally and externally and add it to our solutions.
Some environment notes:
We are currently using VS2013, .Net 4.5, EF5, SQL2008, MVC4, C#, and asp....
4
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1answer
104 views
What's the purpose of having services in containers?
I've been very interested in Service Oriented Architecture, and Microservices. Many resources talk about having services in containers.
To me, one of the big benefits of seperating an application ...
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0answers
103 views
Should/can a web crawler be a separate microservice?
I've never built anything using microservices and all the articles I can find are not very practical.
I'm building a web application that relies on a web crawler to scrape data into a database, a ...
5
votes
3answers
2k views
Microservices architecture and bounded contexts
In the past few days I've been reading some things about microservices architecture. I didn't get the whole point yet, since I'm just starting with this, but there's one point which caught my ...
6
votes
1answer
337 views
How do you organize API endpoint contracts
Where trying to improve the "confidence" we have in our inter-service communication.
Background:
"Contracts" has been a matter of sharing a piece of code that defines an interface to implement, but ...
4
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2answers
4k views
Webservices vs Microservices [closed]
In our org , we have soap & rest based services that have focused set of responsibilities. For instance , there is customer service for managing customer info , account service for managing ...
2
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2answers
1k views
Distributed transactions with Kafka
I need to implement a transaction that spans over loosely coupled (SOA+MOM) components.
When a particular event is received, FOO and BAR need to do a transactional operation: that is, both the ...
2
votes
2answers
467 views
Why doing everything with one software project is wrong? [closed]
I am newly employed by a company. After a couple of weeks, I have heard lots of time that there is a huge project which most of the programmers are working on it. They call it something like Managing ...
2
votes
3answers
712 views
How to share data between web applications?
I have two web applications, say Application_1 and Application_2.
Application_2 has a database table named table_2, which changes infrequently, and needs to be accessed by Application_1.
Does it ...
24
votes
4answers
13k views
What is the most accepted transaction strategy for microservices
One of the major issues that I have seen occur in a system with microservices is the way transactions work when they span over different services. Within our own architecture, we have been using ...
0
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0answers
39 views
Resource manager for restful service
I was just brought onto a project with a service oriented architecture. There is a central WCF "profile service" that all projects call to get information on users etc.
That central profile service ...
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votes
1answer
984 views
How to decompose Monolithic applications into Microservices with interdependent functional modules?
I work with a large monolithic web application that has between 12-24 functional modules and these are all maintained inside a single war project structure. While the code itself is already segmented ...
6
votes
1answer
125 views
Service repository and discovery without WSDL
I'm in the very early stages of moving a development team away from large monolithic app development to an SOA approach. One of the things that caught my eye in this article about SOA:
Stevey's ...
2
votes
1answer
339 views
Where to keep persistent services in MVVM architecture?
In an MVVM application I need to use some services that are persistent, e.g. network services like P2P and WCF where the main "engine" or server endpoint must remain up and running during the lifetime ...
7
votes
1answer
4k views
Microservice architecture: single database owned by a single service? [duplicate]
We're rebuilding a system in a microservice archiecture. I know the standard practice for SOA is to have each individual service responsible for its own database.
However, does it make sense to have ...
6
votes
3answers
610 views
Is this breaking SOA?
We're havng a bit of a disagreement in our team, and I would like to hear other people's views. We have a mature solution that uses an Entity Framework model, which is accessed by a repository layer, ...
2
votes
0answers
575 views
How does the Zope Component Architecture (ZCA) relate to Service Component Architecture (SCA)?
I'm very new to the principle of Service Component Architecture and Zope in general, but the more I look, the more ZCA seems to be a good solution for a certain class of problems I often encounter.
I ...
3
votes
1answer
457 views
Separating Django models for SOA
First of all, the goal of this exercise is to create a SOA with Django.
I am trying to understand what the implications would be if I decided to separate and insulate models into apps, provide a REST ...
2
votes
1answer
155 views
SOA principles, encapsulation and autonomy
We are developing multiple web services in C# using WCF, but we´re new doing it.
So, for what we have read and learnt, this is our approach:
We have a class library that we called CommonLibrary that ...
2
votes
3answers
230 views
Is it an abuse of SOA to use it as a database abstraction layer? [closed]
I have a question whether it is a good or bad practice to use an SOA layer for the application servers to talk to the database. A web application server can obviously directly connect to a database, ...
3
votes
1answer
221 views
Integration between services in a SOA
Assume we have a Bounded Context for Inventory (InventoryBC) and another one for Shipments (ShipmentsBC). These 2 BCs need to communicate together. They are hosted on 2 different services on different ...
5
votes
3answers
134 views
Is an enterprise-wide data model truly feasible?
I've consulted for a number of Fortune 500 and 100 companies all of whom have made some kind of effort at creating a "Master" data model even to the point that they'd attempt to have all applications ...
1
vote
1answer
81 views
Domain Driven Design and Data Conflicts
I realise it is probably overkill for what is a occasionally connected client app, but the construction of aggregates roots is bugging when thinking about it from a client perspective.
For the ...
42
votes
5answers
11k views
Why is it so bad to read data from a database “owned” by a different microservice
I have recently read this excellent article on the microservice architecture: http://www.infoq.com/articles/microservices-intro
It states that when you load a web page on Amazon, then 100+ ...
3
votes
2answers
180 views
Service Oriented Architecture - Component Responsibility
Working on an ecommerce project whereby a PHP application (back-end & non-customer facing) is currently responsible for processing an order from checkout stage through to generating profit/loss ...
2
votes
1answer
234 views
Best practice for accessing data from an external legacy ERP system
I have an architectural problem, and would be glad to receive some consultancy :). The application I am developing (let's call it system A) is responsible for management of work groups, where these ...
8
votes
1answer
792 views
how to implement idempotent webservice calls
I'm developing a wcf based solution for a webservice layer that "occasionally-connected" mobile devices will be using. The service will not be using queuing (at this stage) due to the additional ...
3
votes
1answer
388 views
A “Composite API” layer
We are giving services a complete overhaul at work: Swapping soap for rest, resculpting the domains to give better separation of concerns, etc.
These new services will be publicly available. During ...
5
votes
1answer
2k views
Public API Facade with Micro Services
Consider a micro service infrastructure in which each service is responsible for one set of activities, and exposes a RESTful interface to its functionality. For example, assume a chat application.
...
2
votes
2answers
3k 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 ...
11
votes
4answers
3k views
Micro-services and data replication
I am building a new application and was reading about micro-services architecture. The architecture itself makes lot of sense from a development, deployment and life cycle management point of view. ...
3
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1answer
86 views
How to use Messagequeing in a distributed web application
I am curious for solutions to this problem:
Assume we are going to build an online-store. To better scale parts of the architecture, it is broken into independend subsystems. The typical scenario ...
4
votes
3answers
2k 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, ...
2
votes
1answer
368 views
Multitier architecture using API
I have been reading a number of posts and I am leaning towards building an SOA.
My main dependencies are:
Need to support multiple clients
Need individual client environments to not effect other ...
1
vote
2answers
1k 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 ...
4
votes
1answer
545 views
Use a custom value object or a Guid as an entity identifier in a distributed system?
tl;dr
I've been told that in domain-driven design, an identifier for an entity could be a custom value object, i.e. something other than Guid, string, int, etc. Can this really be advisable in a ...
1
vote
1answer
150 views
Versioning Strategy for Service Interfaces JAR
I'm building a service oriented architecture composed (mostly) of Java-based services, each of which is a Maven project (in an individual repository) with two submodules: common, and server. The ...
0
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0answers
199 views
Schemaless NoSQL RESTful design?
In a recent project; I used MongoDB with MongoEngine (an ORM/ODM for Python).
This allowed me to specify schema in a central "Model".
My new project I am hosting on Windows Azure; and there is no ...
1
vote
2answers
127 views
Test Data in a Distributed System
A question that has been vexing me lately has been about how to effectively test (end-to-end) features in a distributed system. Particuarly, how to effectively manage (through time) test data for ...
0
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0answers
54 views
Are there guidelines for SOA events and file transfers in a SOA context?
We are part of a SOA implementation.
We publish events via the enterprise bus for certain changes in our system.
The architects here have advised, however, that some bulk changes to data should go ...
0
votes
1answer
157 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 ...
4
votes
2answers
2k views
Where does Windows Workflow Foundation fit into the messaging oriented middleware architecture?
I've been trying to find information online about where WWF 4.5 fits with in an architecture based around an enterprise message queue using central broker(s) (RabbitMQ in particular).
It seems like ...
2
votes
2answers
198 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 (...
