You probably already thought about this, as its quite popular statement. Let’s delve deeper into the subject. I wrote article that explain what is compositio...
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Inversion of Control and Dependency Injection
What does mean object-oriented programming?
Those two concepts are often misunderstood or used interchangeably, where they are completely different concepts.
In object-oriented paradigm, Coupling refers to the degree of direct knowledge that one element has of another. We may generally divide coupling to tight and...
Depth First Search [DFS]
In an object-oriented language like Java, what could be wrong with constructors? Overall, nothing. Even so, the famous Joshua Block’s Effective Java Item 1 c...
The Aggregate is one of the main pattern in Domain Driven Design (DDD) introduced by Martin Fowler.
a data structure that is constructed with nodes, where each has some value and may point to child-nodes, which recursively form subtrees in the tree.
Graph is a collection of nodes that may or may not be connected to each other.
A data structure that store data in key-value pairs and provides fast insertion, deletion and searching.
Is very similar to array, at least conceptually, to an array.
There are two types of arrays. Static and dynamic ones.
It’s mathematical concept which is very often used in Computer Science in context of algorithms complexity, it’s even sounds similar 😀
The Big O Notation is a mathematical, asymptotic notation that describes time complexity and space complexity of algorithms/ function when the argument tends...
What are data structures?
It’s a process in which we determine how efficient an algorithm is. There are multiple ways to solve the same issue but the complexity analysis will likely d...
Builder is a creational design pattern that lets you construct complex objects step by step. The pattern allows you to produce different types and representa...
What is Spring Cache? How to configure it in your project and how to use it? How does Spring Cache work? How to add an external provider that allows flexible...
Why use indexes?
The observer pattern is a software design pattern in which an object, named the subject, maintains a list of its dependents, called observers, and notifies t...
The scope defines the runtime context within which the bean instance is available.
You may have contact with test that are not too readable, as the communicates when they fail. In that case you should take in consideration creating your own...
Strategy is a behavioral design pattern that lets you define a family of algorithms, put each of them into a separate class, and make their objects interchan...
SOLID is an acronym for the first five object-oriented design (OOD) principles by Robert C. Martin (also known as Uncle Bob).
Do i really need tests? Isn’t it a waste of time? And other questions like this that you might asked once or still asking yourself. Its not true and let me e...