In this blog post, we will discuss Backend for Frontend pattern. To be honest, I was a bit surprised and skeptical when I first heard about this pattern, but the more I thought about it, the more sense it made. So what exactly is the Backend For Frontend pattern. The Problem Consider a generic backend Web Api that … Continue reading Backend For Frontend Pattern
Category: Best Practices
Anti Corruption Layer
Integration with legacy systems is often challenging. Quite often the legacy systems would be a playground of obsolete APIs and convoluted data schemes. In order to provide compatibility with the older system, the newer system often has to share some of these undesirable traits of the legacy systems and corrupt them. Usually, developers tend to … Continue reading Anti Corruption Layer
Design Patterns : Mediator Pattern
There are two reasons I thought I should be blogging about the Mediator Pattern. Firstly, I wanted to continue with the series of different design patterns and principles, filling out the missing pieces. Secondly, I would like to write a blog entry on configuring the Mediator and CQRS on a Web Api sometime soon. But … Continue reading Design Patterns : Mediator Pattern
Event Aggregator
Even though Event Aggregator could be termed as one of the lesser known patterns, the useful of the pattern cannot be ignored. In fact, it makes me wonder why it is lesser known. Let us recap the observer pattern. One of the problems with observer pattern is that it could grow out of hand when … Continue reading Event Aggregator
Gof : Observer Pattern
This has been a long overdue. I had started with this series of byte sized tutorials on various patterns but never went ahead and completed the series. So here am continuing from where I left with the Observer Pattern. While working with applications, there would times you could have an object which would like to notify other … Continue reading Gof : Observer Pattern
SOLID: Interface Segregation Principle
Completion of the series of articles on SOLID Principles has been due for a long time now. The lockdown due to Covid-19 has atleast given me more time to be able to work one some of the due items. In this part of the series we will seek to know more about the "I" of … Continue reading SOLID: Interface Segregation Principle
SOLID : Liskov Substitution Principle (Part 2)
In the first part of the post, we visited the core definition of Liskov Substitution principle and took time to understand the problem using an example. In this second part, we would take time to understand some of the governing rules of the principle. The rules that needs to be followed for LSP compliance can … Continue reading SOLID : Liskov Substitution Principle (Part 2)
SOLID : Liskov Substitution Principle (Part 1)
The "L" in SOLID stands for Liskov Substitution Principle, named after Barbara Liskov, who initially introduced in 1987 keynote address. LSP provides guidelines for creating inheritence heirachy where a client can use any class or subclass without breaking the expected behavior. We will begin by looking at the official definition first. If S is a … Continue reading SOLID : Liskov Substitution Principle (Part 1)
GOF: Composite Pattern
Composite Pattern, in a way, literally takes of from where Decorator Pattern ends. One might be inclined to think of it as a specialized case of Decorator Pattern which composes one or more instances of similiar objects and manipulate them uniformly. This allows the client to work on a single entity or composition of entity … Continue reading GOF: Composite Pattern
Law Of Demeter
If you ask any Software Developer, he would vouch that separation of concerns is the fundamental principles for maintaining any complex system and one of the vital links for achieving Separation of Concerns is decoupling. Law of Demeter (LoD), also known as Principle of least knowledge, intends to reduce coupling between objects as proposed by … Continue reading Law Of Demeter
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