#SOLID Archivi - Luigi Cardarella

Leveraging Service Virtualization for Seamless Integration and Testing: Exploring Open-Source Technologies

2023-05-25admin

Introduction: Service virtualization has become a game-changer in the realm of software integration and testing. Traditional approaches often rely on live systems or struggle with simulating complex environments, resulting in delays, increased costs, and limited test coverage. However, with the rise of open-source service virtualization technologies, organizations now have a powerful solution at their disposal. […]

Introduction to Entity Framework – Part2

2015-06-122019-01-18admin

Entity Framework DB First – Managing Entity Relationships In this article, we will see how to model relationships between tables in our Entity Data Model and use Entity Framework to work with these related entities. We will look at the types of relationship between the tables, and then we will see how this can be […]

Using Test Doubles with Unit Tests – PART 2

2015-04-162019-01-18admin

Getting back to the example, using the same repository and test that we outlined previously, we now convert that test to use a mock created by Moq instead of the repository stub. Listing below demonstrates how the code looks. using System; using System.Data.SqlClient; using Microsoft.Practices.Unity; using Microsoft.VisualStudio.TestTools.UnitTesting; using Moq; namespace CodeSamples.Ch05_ClassMocking.Listing04 { public class MockingExample […]

Using Test Doubles with Unit Tests – PART 1

2015-03-262019-01-18admin

Test Double is a generic term for any case where you replace a production object for testing purposes. We now introduce a significant piece of the unit testing approach—test doubles. Using test doubles is a way of creating a class whose behavior can be changed at runtime. These classes can be used to unit test […]

The Golden Rule of API Design

2014-11-172019-01-18admin

API DESIGN IS TOUGH, PARTICULARLY IN THE ENTERPRISE. If you are designing an API that is going to have hundreds or thousands of users, you have to think about how you might change it in the future and whether your changes might break client code. Beyond that, you have to think how users of your […]

Continuously Integrate

2014-11-03admin

HE BUILD AS A “BIG BANG” EVENT in project development is dead. The architect, whether an application or enterprise architect, should promote and encourage the use of continuous integration methods and tools for every project. The term continuous integration (CI) was first coined by Martin Fowler in a design pattern. CI refers to a set […]

Database Sharding Pattern

2014-08-142014-08-18admin

This advanced pattern focuses on horizontally scaling data through sharding. To shard a database is to start with a single database and then divvy up its data across two or more databases (shards). Each shard has the same database schema as the original database. Most data is distributed such that each row appears in exactly […]

Eventual Consistency Primer

2014-08-13admin

The Eventual Consistency primer introduces eventual consistency and explains some ways to use it. This primer uses the CAP Theorem to highlight the challenges of maintaining data consistency across a distributed system and explains how eventual consistency can be a viable alternative. In an eventually consistent database, simultaneous requests for the same data value can […]

SOLID architecture principles using simple C# examples

2014-05-292014-05-29admin

What is SOLID? SOLID are five basic principles whichhelp to create good software architecture. SOLID is an acronym where:- S stands for SRP (Single responsibility principle O stands for OCP (Open closed principle) L stands for LSP (Liskov substitution principle) I stands for ISP ( Interface segregation principle) D stands for DIP ( Dependency inversion […]