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#design-patterns
Recently, I have studied a few things about low-level design from scratch. I wrote one small document on LLD and how to approach LLD problems; what kind of problems are being asked in most of the int…
There are several design patterns that are commonly used in Python programming. Some of the most common design patterns include: Singleton: This design pattern ensures that a class has only one insta…
Intro The application User Interface is crucial. If someone opens your app, their initial impression may impact whether they decide to stay or leave forever. In the context of an APEX-created applicat…
Association tells about the relationship of one class with another. It generally implies "HAS-A" relationship between two classes. For example, consider two classes: Car Driver then, there is an as…
Ha Noi, on Thursday 24/11/2022 At the moment, a little speech to give to the present... Hà Nội mùa này vắng những cơn mưa Cái rét đầu đông khăn em hiu hiu gió lạnh Hoa sữa thôi rơi ta bên nhau một ch…
Summary The Factory Method Pattern defines an interface for creating an object, but lets subclasses decide which class to instantiate. Factory Method lets a class defer instantiation to subclasses. Pr…
Abstract In this article, I will overview the concept of Hexagonal Architecture (HA), the problem it addresses, its benefits, implications and some practical examples illustrated via code and diagrams…
In my previous post related to outbox pattern, I have described different flow and what advantage or benefit It provides and specially for reliable messaging and surety that message never loss as it performs under transaction boundary of da…
We often hear about "premature optimization", and that's of course in the context of performance. Simultaneously, we often hear about the virtues of "clean code", which can mean many different things,…
Summary Abstract Factory provides an interface for creating families of related objects, without specifying concrete classes. Problem Let’s take an example to find out what problems this pattern is tr…
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