In recent years, digital financial transactions have become more common and significantly faster. While this is a much-needed development, the threat landscape surrounding these transactions has also grown increasingly complex. From identity theft and payment fraud to synthetic financial crimes and data breaches, ensuring transaction security is now a top priority around the world. Unfortunately, … Read more
Introduction SQL is not just about querying data—it also includes powerful commands to modify data within tables. These Data Manipulation Language (DML) commands, such as INSERT, UPDATE, and DELETE, enable you to add, modify, or remove rows in a database. In this article, we’ll explore these commands with practical examples. Sample Table: Employees Let’s start … Read more
:::tip Hi! My name is Andrew Maksimchenko 👨🏻💻 I have over 10 years of versatile professional experience, taking on diverse roles such as Solution Architect, Lead Software Developer, IT Jury Member, Mentor, and more. Over the years, I’ve worked deeply with modern and legacy frontend technologies and dedicated a lot of time to understanding how to build … Read more
Technology leader and researcher Anil Lokesh Gadi has been a significant contributor towards making engine monitoring systems more efficient and smarter. Through his research activities, he has proposed an AI-powered framework capable of proactively optimizing engine performance and diagnosing engine faults. The paper titled “A Framework for Real Time Engine Fault Diagnosis using Machine Learning … Read more
With blockchain taking over the tech space, innovators are looking for new ways to educate individuals about the growing power of decentralized technology. Legacy Network AG is a first-of-its-kind education ecosystem innovator based in Ruggell, Liechtenstein. The company hopes to reshape global education through blockchain and artificial intelligence. With smart learning programs, a gamified user experience, and … Read more
Hey Hackers, In our last note, “The 5 Secrets to Getting Featured as Top Story on HackerNoon,” we reemphasized the importance of prioritizing quality content—an obvious tip but one that’s necessary to reiterate as more AI content takes up space online. To ensure SERPs continue to favor real value, Google evaluates the quality and credibility … Read more
Overview of the Article This article explains the concept of self-healing test automation, its underlying principles, benefits, and practical implementation strategies. It will explore the various techniques and technologies that enable self-healing capabilities, including machine learning algorithms, dynamic element locators, and visual validation methods, providing a comprehensive overview of the current state of the art … Read more
When I was a kid I watched a young Ben Affleck on the TV show Voyage of the Mimi. It was an educational show and I learned about things like hypothermia and how to make a still for purifying water. In some vague sense I grew up with the actor following his fame. There is … Read more
Throughout history humanity solved problems with the toolbox of its time. It caused delays of hundreds of years in progress. Abandoning old intuitions solved more than the original problem The fact we are living inside events is misleading. It is not the Matrix. It is the availability bias to blame. We think what we see … Read more
How are you, hacker? 🪐Want to know what’s trending right now?: The Techbeat by HackerNoon has got you covered with fresh content from our trending stories of the day! Set email preference here. ## The Best TV Series Set In Post-Apocalyptic Wastelands By @@Zohan [ 4 Min read ] Explore the top post-apocalyptic TV shows … Read more
When our team made the jump to Jetpack Compose, one thing immediately stood out – the simplicity of handling lists. No more wrestling with complex adapters, tricky cell updates, or manual diffing; just drop your items into a LazyColumn, add keys, and voilà – instant scrolling magic! But, as you might have guessed, reality isn’t … Read more
Recursive queries in SQL, enabled by Common Table Expressions (CTEs), allow us to work with hierarchical or recursive data structures such as employee-manager relationships, family trees, or file directories. This article introduces the WITH clause and demonstrates how recursive CTEs can simplify these operations. What is a Common Table Expression (CTE)? A CTE is a … Read more
In modern database development, tools like DataGrip make transaction handling easier by providing graphical interfaces to commit, rollback, or set savepoints. In this article, we’ll define COMMIT, ROLLBACK, and SAVEPOINT in SQL and demonstrate how to implement these transaction controls when working with Oracle, MySQL, or PostgreSQL in Python. Key Transaction Concepts 1. COMMIT • … Read more
Last year, I started to dig a bit around LangChain4J. It’s a fast-growing project, and I wanted to get familiar with the updates. I also wanted to check how to integrate a Model Context Protocol server in LangChain4J. Version 1 Beta I wrote my last post in November 2024 and used the latest version available … Read more
Data is the foundation of all machine learning innovations. However, collecting vast amounts of data from websites can be tricky due to barriers like request limits, CAPTCHAs, and geo-restrictions. For example, when a data science team set out to scrape Amazon product reviews for an AI sentiment analysis project, they faced immediate limitations. By using … Read more
The special Startups of The Year 2024 Winners Interview series is a celebration of all this year’s Tech Champions. You’ve earned it! The HackerNoon community can’t wait to learn more about your journey! :::tip https://hackernoon.com/startups/industry/access-control ::: Tell us about you. Cerbos is an authorization management solution for authoring, testing, and deploying access control policies. Implement … Read more
Do You Really Need a “Second Brain”? In a world overflowing with information, tools, and apps, the concept of a “second brain” keeps coming up—a system to store our thoughts, ideas, and tasks. Apps like Notion, Evernote, or Obsidian promise to organize our lives and boost productivity. But which one is the best for you? … Read more
In today’s digital age, protecting and encrypting personal data has become essential to safeguarding privacy and security. With the increasing prevalence of cyber threats, such as hacking, identity theft, and unauthorized surveillance, sensitive information like financial details, passwords, and private communications can easily fall into the wrong hands. Encryption acts as a powerful shield, transforming … Read more
Can a single-click really migrate billions in DeFi liquidity? That is the question being answered by a major new partnership in the blockchain space. Enso, Stargate, and LayerZero have collaborated to create a new infrastructure that allows Uniswap liquidity providers (LPs) to migrate their positions to Unichain with just one click. The announcement suggests that … Read more
Ruin is the destination toward which all men rush, each pursuing his own best interest in a society that believes in the freedom of the commons. – Garrett Hardin Some time in the past, I worked at a company that self-hosted almost everything from whether it was a good decision or not, deserves a separate … Read more
The concept of circular economy is moving from theory into practice across tech and infrastructure sectors—and it’s moving fast. As organizations feel increasing pressure to cut waste and reduce their environmental footprint, companies with an eye on the future are creating innovative solutions that transform old-school liberal models into sustainable, closed-loop systems. This shift isn’t … Read more
How COTI’s Role in Saudi Arabia’s AI and Blockchain Centre Could Shape the Future of Web3 and Real-World Assets Why is a blockchain protocol from Israel becoming a key player in Saudi Arabia’s ambitious AI and blockchain plans? The announcement of COTI as a founding member of the newly formed Saudi Arabia AI and Blockchain … Read more
Hey everyone! I wanted to share my approach to creating a “smart documentation” chatbot for a project I’m working on. I’m not an AI expert, so any suggestions or improvements are more than welcome! The purpose of this post is not to create another tutorial on building a chatbot based on OpenAI. There’s already plenty … Read more
The university system is buckling under its own weight. It sells the promise of career readiness, yet curricula often lag behind industry needs. Meanwhile, countless companies prioritize skills and gatekeep opportunities behind arbitrary experience requirements. It’s a broken system—and at HackerNoon, we want to be part of the solution by removing barriers to entry and … Read more
How are you, hacker? 🪐 What’s happening in tech today, May 1, 2025? The HackerNoon Newsletter brings the HackerNoon homepage straight to your inbox. On this day, Columbian Exposition opened in Chicago in 1893, The United Kingdom Was Formed in 1707, and we present you with these top quality stories. Backpressure Isn’t a Bug: It’s … Read more
Being attracted to junk food is a feature turned bug. But nourishment is only one exploit being hacked, for which we are paying with our lives. Junk food by evolution Why we crave junk food (processed to have too much sugar, fat, salt) is fairly known. The short version is we are far from our … Read more
A Revolution Quietly Led by the Company Trusted by Governments and Fortune 500 Giants In an era where technological noise often drowns true innovation, droppGroup emerges as a quiet giant. Behind closed boardrooms and sovereign discussions, they are building something profound: the rails of the New Internet and the foundation of the AI-driven economy. Governments … Read more
Processes for financial accounting and controlling become more complex and intricate each year. Long gone are the days of paper filing and manual paperwork, mainframe computing, and early ERP systems. Even today’s fully cloud-based ERP systems are barely sufficient to handle the needs of evolving business practices, competitive global markets, and new AI and blockchain … Read more
Introduction The Fintech industry depends on fast, secure, scalable applications to manage millions of transactions daily. Traditionally, centralized cloud architecture was the go-to architecture for these systems. In the recent past, the rise of decentralized cloud and blockchain presents both opportunities and challenges for performance optimization in microservices-based Fintech applications. In this article, I will … Read more
Despite recent tensions between the United States government and Latin American countries over migration and tariffs, the business ecosystem within the hemisphere remains committed to cross-border investment. Ahead of President Donald Trump imposing a 25% tariff on all imports from Mexico in March, Melissa Guevara, a Senior Associate at Costa Rican VC firm Caricaco Ventures, told Contxto … Read more