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The Power of a Single Line: Securing Your Website with RedirectMatch 404 /\.git

The Power of a Single Line: Securing Your Website with RedirectMatch 404 /\.git

In the world of web development and server administration, security is never optional. One small misconfiguration could expose sensitive data, especially when using popular version control systems like Git. One such vulnerability is accidentally exposing the .git directory on your public-facing server. Fortunately, there's a simple yet powerful

How to Convert a String to Base64 and Back (and Why It Matters)

How to Convert a String to Base64 and Back (and Why It Matters)

When working with web technologies, file handling, or even data serialization, you’ll eventually come across Base64 encoding. It might look like gibberish at first glance — a long string full of letters, numbers, slashes, and equals signs — but it’s actually a very simple and powerful tool. Let’s dive

Efficient React App Deployment Using rsync: A Practical Guide

Efficient React App Deployment Using rsync: A Practical Guide

When it comes to deploying a React application, many developers reach for tools like FTP, scp, or Docker. While those methods have their place, if you need a fast, reliable, and incremental way to sync your build directory (usually dist/ or build/), there’s arguably no better tool than rsync.

The Paradox of Progress: Why Japan Looks Futuristic but Lags Digitally

The Paradox of Progress: Why Japan Looks Futuristic but Lags Digitally

When we think of futuristic nations, Japan almost always comes to mind. Neon-lit cityscapes, bullet trains (Shinkansen) that arrive within seconds of schedule, humanoid robots serving hotel guests, and vending machines that do everything from dispensing ramen to printing t-shirts. From the outside, Japan seems like a country that lives

How to Use Hash Functions in Google Sheets: SHA256, MD5, and Beyond

How to Use Hash Functions in Google Sheets: SHA256, MD5, and Beyond

Hashing is a common technique used in software development to generate unique identifiers, verify integrity, or anonymize data. If you're working inside Google Sheets, you might wonder: can I create a hash like SHA256 or MD5 directly in a spreadsheet? The short answer is: not natively, but with

How to Detect Duplicate Values in MySQL Tables: A Practical Guide

How to Detect Duplicate Values in MySQL Tables: A Practical Guide

When working with relational databases, one of the most common data integrity challenges is the presence of duplicate values. Whether you're importing data from spreadsheets, syncing between environments, or simply dealing with legacy data, duplicates can silently degrade the accuracy and trustworthiness of your application. In this article,

Why Your Internal System Should Use Internal IDs (Not External Auth IDs)

Why Your Internal System Should Use Internal IDs (Not External Auth IDs)

Many systems today integrate with external identity providers—services that handle user authentication and issue secure tokens for login. These providers typically return a unique user identifier (like an external_oid, sub, or auth_id) with each session. It might seem convenient to use these external identifiers as the primary