Recent posts tagged mysql

Most teams think of Flyway only when they need to manage ongoing database schema changes. But what if your project already has a complete, stable schema and you’re only now introducing version control? Or what if you want to incorporate your schema i...

What is Database Replication? Database replication is the automated process of keeping multiple exact copies of a database synchronized across different server instances. When data is added, updated, or removed in the primary database, those change...

An ACID transaction is a set of four database safety rules—Atomicity, Consistency, Isolation, and Durability—that ensure database operations are executed reliably. It guarantees that even if your application crashes, loses power, or experiences thous...

In modern software development, we often have to handle multiple users interacting with our application at the exact same time. Optimistic and pessimistic locking are two distinct strategies used to manage concurrency, which is the technical term for...

Stop Tracking "On-Time" Flights. Track Tarmac Fuel Destruction Instead. Most aviation dashboards track gate-to-gate "On-Time" arrivals. The problem? It's a lagging indicator that completely masks why airlines silently hemorrhage millions. Padded f...

You update WordPress on a quiet afternoon, a routine release, the kind you've installed a hundred times. The dashboard says everything went fine. Then the 404s start: not a handful, but every long-headlined article in your archive, all at once, all i...

Connection pooling is a software development technique used to maintain a cache of database connections that can be reused for future requests. Instead of opening and closing a brand-new connection to the database every time a user wants to read or w...

Imagine launching your shiny new web application. During development, everything runs smoothly. But the moment you launch on social media and a few hundred users hit your API at the exact same time, your server grinds to a halt and starts throwing na...

What is Connection Pooling? Database connection pooling is a technique where a cache of database connections is kept open and shared among multiple queries, rather than opening and closing a brand-new connection for every single query. When your ap...

The N+1 query problem is a performance bottleneck that occurs when an application makes database queries inside a loop. Instead of fetching all the required data in a single, efficient query, the system executes one initial query to fetch a list of p...

Database connections are the lifeblood of any web application, but they are also surprisingly expensive to create and destroy. When your application struggles under sudden traffic spikes, the database is often the first thing to break. This is where ...

Setting up a reliable local web development environment is one of the first steps for anyone working with WordPress, PHP, MySQL, or Apache. While XAMPP makes this process easier by bundling the required components into a single package, configuring t...

Recently, I built a complete real-time payment gateway integration using PHP, PayHere Sandbox, ngrok, and MySQL to simulate and test online payments in a local development environment. This project covered: Secure PayHere checkout integration Rea...

TL;DR: iamroot.tech1 uses a custom-built, asynchronous MySQL database synchronization system handling ~10 million daily changes across several distributed nodes without consensus algorithms or distributed coordinators. Key Architecture & Trade-offs: ...

Two hundred and fifty thousand articles, and the thing editors complained about was the search box. Not the accuracy of it. The wait. Type a name into the newsroom's admin search, go and do something else, come back. That is the easy complaint, beca...

To stop a table update in modern MySQL, you use the SIGNAL statement. This statement allows you to return an error state and a custom message to the application, which immediately aborts the triggering operation and rolls back the uncommitted transac...

A critique of the trend toward account-required database GUI clients, arguing that tools holding production credentials should never route data through vendor backends. The post makes the case for local-first design using Tabularis as a concrete exam...

Today, in this article we will discuss the error message "Public key retrieval is not allowed". This error message is indicating that the system is configured to disallow the retrieval of a public key. This is likely a security measure to prevent una...

It was a WordPress site on a $5 DigitalOcean droplet. Client's small business. Nothing fancy. I had SSH access. I had root. I had every tool I needed to set up automated backups. I just... didn't. Because it was a small site. Because I'd "get to it ...

title: CAP Theorem Explained: What I Learned Setting Up MySQL Replication published: true tags: systemdesign, mysql, distributedsystems, beginners I recently started my journey into system design and data-intensive applications. This experience ha...