Category algorithms
A shopper wants to buy one item from each category: pants, sneakers, a skirt, and a t-shirt. Each category has multiple price options, and the shopper must stay within a...
The Twitter API enables developers programmatically posting tweets.
Write a method to calculate the minimum possible time to put the N parts together and build the final product. The input consists of two arguments: numOfParts, an integer representing...
A merging algorithm takes two sorted lists as input and produces a single list as output, containing all the elements of the two inputs lists in sorted order.
Big O Notation is a mathematical notation that helps us analyze how complex an algorithm is in terms of time and space. When we build an application for one user...
Depth-First Search (DFS), is an algorithm to search for information in Graphs.
Tree data structures are non-linear data structures, and they allow us to implement algorithms much faster than when using linear data structures.
Write a method that, given an original number N, returns the smallest number with the same number of digits.
Category test-driven development
The Knapsack problem is a classic optimization problem in computer science and mathematics. It belongs to a class of problems known as combinatorial optimization problems. The basic idea of the...
Category design
When dealing with a monolithic Java application under heavy concurrent load that leads to issues like too many opened data pools, excessive resource consumption, performance degradation, and even system crashes,...
Software design principles are guidelines and best practices that help software developers create high-quality, maintainable, and efficient software. Here are some commonly recognized software design principles:
Soft skills are the personal attributes that enable individuals to interact effectively and harmoniously with others. In software development, having strong soft skills is just as important as technical skills....
The Unified Modeling Language is a graphical notation for modeling systems and conveying User software requirements. All developers must understand this notation before starting programming.
SOLID principles tell you how to arrange your functions into classes and how those classes should be interrelated.
SOLID principles tell you how to arrange your functions into classes and how those classes should be interrelated.
Category Web APIs
Swagger Codegen can simplify your build process by generating server stubs and client SDKs for any API, defined with the OpenAPI.
In this series of articles, we will follow a real API project from concept to production, and learn hands-on how to describe and design APIs using OpenAPI in the Swagger...
This guide walks you through creating a client application that simultaneously consumes different endpoints from a RESTful web service (API Server).
In the world of web development, APIs (Application Programming Interfaces) play a vital role in enabling communication and data exchange between different systems. Among the various types of APIs, REST...
A rate-limiting system controls the rate of traffic sent or received on a network interface. APIs will use rate-limiting techniques to control how many times application Clients are allowed to...
The HTTP 503 Service Unavailable server error response code indicates that the server is temporarily not ready to handle the request.
The Secure Socket Layer (SSL) enables a secured connection between a client and a server. SSL Handshake is a set of steps that make it possible for this secured connection...
This tutorial will show how to integrate OAuth2 with Spring Security in a Spring Boot application with OpenAPI 3.
The main idea for documenting our back-end RESTful APIs is to communicate to third-party developers what our endpoints are doing.
Category Coding Practices
Clean code can be read and enhanced by a developer other than its original author.
Category distribuited systems
Elasticsearch is a distributed real-time document store where every field is indexed and searchable. It provides near real-time search and analysis for all types of data.
Category Object-Oriented
Understanding OOP concepts gives you a solid foundation for making critical decisions about object-oriented software design.
Category Domain-Driven Design
A Domain is an area of knowledge associated with a problem we are trying to solve.
Category Language
A helpful vocabulary with the most common words when working as a software developer in Germany.
Load balancing is a process that routes network traffic to a group of backend servers, also known as a server pool. A load balancer is responsible for distributing incoming requests...
Category startup
There are many ideas that could be suitable for starting a successful startup, and the ideal one will depend on various factors such as your interests, skills, market demand, and...
Category Project
Breaking down a large web development project into tasks is essential for effective project management. Here’s a step-by-step guide to help you with the process:
Category data structures
In the realm of computer science, data structures serve as the cornerstone of efficient and organized data manipulation. They provide a systematic framework for arranging and managing data, enabling programmers...
Category programming
We will create an API Client to automate the creation of an Order based on a combination of Buyers, Suppliers, Customer Numbers, and Articles.
Spring Boot includes additional features to help you monitor and manage your application when deployed to production.
This article provides practical test prep material for the OCP Java SE Developer Certification, which will help you develop skills that remain in high demand in the IT industry.
Java enums, bit flags, and bitwise operations are powerful features that can greatly enhance the functionality and efficiency of your code. Understanding how to leverage these features effectively can lead...
Generics in Java provide a powerful and flexible way to create classes, interfaces, and methods that can work with different data types while ensuring type safety. Introduced in Java 5,...
Functional programming is a programming paradigm that treats computation as the evaluation of mathematical functions and avoids changing-state and mutable data. While Java is traditionally seen as an object-oriented language,...
