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Moulaye Eli

Web Scraping JSON Data and Images from HTML: Python Tutorial 📖

Python Programming

Web Scraping JSON Data and Images from HTML: Python Tutorial 📖

Hello Python developers. Not Java this time, if you're looking for Java tutorials, you can find them here. A quick, perhaps boring, story: I began my programming journey with Python back in the days when it was less of a popular. Its simple syntax and easy setup for

Understanding Java Exceptions: Checked and Unchecked

Understanding Java Exceptions: Checked and Unchecked

Welcome back! Today, we're focusing on a crucial aspect of Java programming: Exception handling. Understanding the differences between checked and unchecked exceptions is key for creating robust and error-resistant applications. Let's break down these concepts to enhance your Java skills. What are Checked Exceptions in Java?

Spring boot command line tutorial

Simple Steps to Run a Spring Boot Application from the Command Line 🖥️

Hello Java developers. To continue with the Basics here's a practical guide on running Spring Boot applications from the command line. It's a straightforward process, essential for efficient testing and deployment. So, how to run a spring boot appplication from the command line you may ask

Creating a CRUD REST API with Spring Boot and PostgreSQL

Creating a CRUD REST API with Spring Boot and PostgreSQL: A Step-by-Step Guide 🪜

Hello Jhipsters (Java-hipsters) 👓 In this article we are returning to the basics. We'll be creating a Spring Boot application with a CRUD REST API for product management, using Java 17 and PostgreSQL. We will use Java's Optional to handle potential null values, enhancing the clarity of

Mastering Java Optionals: A simplistic guide to Null Handling in Java 🫙

Mastering Java Optionals: A simplistic guide to Null Handling in Java 🫙

Hellowww Java developers! 🎅🏼 Let's talk about a handy feature called Java Optionals. Nulls can be a pain, right? Well, Optionals are like a cool tool to handle them. In this article, we'll explore what Optionals are, how they work in our code, and the practical ways

Spring Application Observability using Prometheus and Grafana

Spring Application Observability using Prometheus and Grafana

TLDR: In this tutorial we will generate prometheus metrics for a spring boot application and visualize them in a Grafana dashboard. What is Observability 🤓 ? Observability in a Spring Boot app is like having a superpower to peek into what's going on under the hood. It's not

Simple Go Lang web service to send emails 🧸✉️

Simple Go Lang web service to send emails 🧸✉️

In this article, we'll be creating a simple Go application that acts as a REST Service. The application will have one end-point /api/contact will run on port 8080. Let's start. What is Go 🧸 ? Go is a simple and efficient programming language created by Google. It

Angular SSR automatic cache refresh using Firestore 🔥

Angular SSR automatic cache refresh using Firestore 🔥

Howdy developers 👋 This is a follow-up post to finish what we have started in the last Angular SSR cache post. To summarize we have used Redis as a cache to serve Angular SSR routes faster. But we have a little gotcha here, when is this cache evicted/refreshed? and how

How to manage Java application secrets using Vault 🚨🔐

How to manage Java application secrets using Vault 🚨🔐

Howdy friend 👋 Here's the plan. We will explain what is Vault and why we need it to manage secrets in applications; Then we'll run Vault and implement a Java project to explain how to use it for managing secrets. Let's Go. What is Vault?

Securely manage passwords in Java applications 🔐

Securely manage passwords in Java applications 🔐

In this article, we are gonna talk about how to securely manage passwords in Java applications, and for this, we'll be using the Java KeyStore API. I will not be diving into details about Key stores but you can read more here. What is a KeyStore ? A Java

Caching Angular SSR routes using Redis 🔥

Caching Angular SSR routes using Redis 🔥

In my last article, we implemented a memory cache to cache Angular SSR routes using the memory-cache package which we used to cache Angular universal rendered routes in the NodeJS backend. But there is a problem here. We want to scale our application to be able to serve more users.

How to make Angular universal (SSR) load faster ? 🚀 🚀

How to make Angular universal (SSR) load faster ? 🚀 🚀

TLDR: Use caching middleware in the express server Problem: Why Angular universal application takes time to load when served using @ng-universal/express-engine and sometimes very slow Solution with some history: Recently we had a project for an Angular e-commerce website that should be optimized for SEO, and the assignment was