https://www.youtube.com/watch?v=HkOMHktDROE In this blog, we’ll explore a Python-based real-time face recognition system that uses ArcFace, OpenCV, and Telegram to detect known and unknown faces in an RTSP video stream. The system also logs events, announces visitors via text-to-speech, and sends alerts to a Telegram channel. Here’s how it all works. Features of the System Face […]
Understanding Java Garbage Collection: A Guide to ZGC and Generational Mode
Garbage collection (GC) is a fundamental component of memory management in Java, automating the process of reclaiming memory occupied by objects that are no longer in use. This allows Java applications to run efficiently without needing to manually manage memory allocation and deallocation. As Java has evolved, so too have its garbage collectors, with the […]
Recognizing When It’s Time to Move Beyond Amazon ElastiCache for Redis
As businesses grow, so do their data needs. Amazon ElastiCache is a robust solution for managing Redis, but certain signs indicate it might be time to upgrade. Here’s a guide on recognizing when ElastiCache no longer meets your requirements and how Redis Enterprise Cloud can address these limitations. 1. Multi-Cloud Flexibility is Limited Amazon ElastiCache ties […]
GitHub Copilot’s New Upgrade Assistant for Java: A Game-Changer for Java Developers
The recent announcement from Microsoft has brought something game-changing for Java developers: a GitHub Copilot Upgrade Assistant for Java. This feature, in technical preview, aims to streamline the often tedious process of upgrading Java applications. Let’s dive into what this means for developers, how it works, and why it could be a significant productivity boost […]
When to Use Threads: A Guide for Developers
As software complexity grows, optimizing for speed and efficiency becomes essential. One tool to consider is threading—allowing tasks to run concurrently within a program. Here’s when and why to use threads effectively. 1. Handling Multiple I/O Operations Threads shine in I/O-heavy applications where tasks wait for external resources (like file or network access). By using […]
Writing Clean Code in a Java Spring Boot Application: Best Practices, Dos, and Don’ts
Writing Clean Code in a Java Spring Boot Application: Best Practices, Dos, and Don’ts When building enterprise-grade applications, writing clean and maintainable code is crucial for long-term success. Java, coupled with Spring Boot, provides a robust framework for developing scalable applications. However, even the best tools need to be used effectively, which is where clean […]
Analyzing a Memory-Eating Spring Boot Application
When your Spring Boot application starts consuming an unusual amount of memory, it’s crucial to analyze the memory usage to identify potential issues and optimize performance. This guide will walk you through the process of taking a heap dump, downloading and installing Memory Analyzer (MAT) software, and analyzing the heap dump to identify memory leaks. […]
Understanding Linked Lists in Java | Data Structure
Linked lists are a fundamental data structure in computer science, offering a dynamic way to store and manage collections of elements. Unlike arrays, linked lists provide efficient insertion and deletion operations, making them a versatile choice for many applications. In this blog post, we’ll explore what linked lists are, their structure, and how to […]
What are Lambda Functions in Java
Lambda functions in Java, introduced in Java 8, are a way to define anonymous methods that can be passed around as arguments to other methods or stored in variables. This feature promotes functional programming, making the code more concise and readable. A lambda function in Java has the following syntax: (parameters) -> expression Or, if […]
How to Convert an Excel Sheet to JSON and Save it to a File Using Node.js
In this blog post, I guide you through the process of converting an Excel sheet to a JSON file using Node.js. This is particularly useful for tasks such as data migration, data processing, or simply making data more accessible. You’ll learn how to set up your Node.js project, install the necessary packages, and write a script to read an Excel file, convert its contents to JSON, and save the JSON data to a file. By the end of this tutorial, you’ll have a functional script that can be easily adapted to handle different Excel files and sheets as needed.