MySQL ships with decent built-in diagnostics, but when your database is slowing down under load, you need command-line tools that show you exactly what’s happening: which queries are running, how long they’re taking, and where the bottlenecks are. This guide covers 6 open-source command-line tools for monitoring MySQL uptime, load, slow queries, and overall performance on Linux. The tools were tested on Ubuntu and RHEL, but they work on any modern Linux distribution running MySQL 8.0 or MariaDB 10.6+.Getting uptime and query statistics from a live MySQL server once meant manually digging through SHOW STATUS output, but these tools turn…
Author: drweb
OpenAI has moved deeper into enterprise cybersecurity with the launch of Daybreak, a platform that identifies software vulnerabilities, validates fixes, and speeds up patching workflows using AI models and its Codex Security system.Daybreak places OpenAI more directly in competition with Anthropic, whose Project Glasswing and Claude Mythos models also offer dual-use AI systems built for cybersecurity research and defensive operations.Rather than promoting Daybreak as a standalone security product, OpenAI designed it as an operational layer embedded inside software development and enterprise security workflows. The system combines GPT-5.5 models, Codex Security, and integrations with established security vendors to help customers analyze…
Track SQL Server Configuration Changes Using the Error LogIf you work with SQL Server long enough, you or someone will eventually want to know, “Did anyone change that setting?” And if you cannot prove it one way or the other, well you might just be in luck. The good news is that SQL Server already tracks configuration changes in a few places. You just need to know where to look and what each option can (and cannot) do for you. The easiest option: standard reportsThe simplest place to start is the SSMS GUI. Right-click the server ? Reports ? Standard Reports, and…
The challenge with the tiling problem is that it looks trivial at first glance – how many ways can you fill a 4xn wall with 4×1 tiles? – but it hides a recurrence relation that rewards those who dig into dynamic programming. I kept avoiding it until I needed a single problem to practice recursion, memoization, and bottom-up DP in one go. This is that problem. This article covers the classic 4xn tiling problem, builds the recurrence relation from first principles, shows a naive recursive solution, then optimizes it with memoization and bottom-up DP. By the end, you will understand…
Hacktron revealed today it is developing a platform that leverages artificial intelligence (AI) to continuously test code for vulnerabilities.Fresh off raising $2.9 million in seed capital, Hacktron founder Zayne Zhang said the company’s platform will employ multiple AI models to test every pull request and code change to identify vulnerabilities that are actually exploitable.Once identified, the platform will also surface a recommendation to remediate that issue that could be shared with an AI coding tool. The overall goal is to dramatically reduce the number of false positives that DevOps teams waste time investigating, said Zhang. In effect, AI will significantly…
I ran into a traffic jam on the Outer Ring Road last month that got me thinking. Hundreds of cars, each driver making their own small decisions — speed up, slow down, change lanes — and from that chaos emerges a total deadlock. No single driver caused it, and no single driver can fix it. This is the core idea behind agent-based modeling, and Python makes it surprisingly accessible to explore. In this article, we build a traffic simulation from scratch using agent-based modeling in Python. We will cover what ABM is, how the Nagel-Schreckenberg model works, how to implement…
Traditional monolithic platforms have served their purpose. As technologies like artificial intelligence and quantum computing usher in a new digital age, flexible and modular architectures will take their place. Developers and cloud professionals should familiarize themselves with composable architecture’s principles, benefits and implementation best practices to remain competitive in an evolving technological landscape.Composable Architectures Are Catching OnComposable architecture is not a niche concept. Market research shows it is a rapidly growing trend with significant projected growth. By 2028, its value will reach an estimated $11.8 billion, up from $5.2 billion in 2023. It will achieve a compound annual growth rate…
The first time I tried to debug a misbehaving neural network, I spent hours staring at accuracy numbers that looked reasonable but hid a fundamentally broken model. What I needed was a way to actually measure how confident the model was about its predictions, not just whether it got the label right. That is exactly what binary cross-entropy loss gives you. This article covers what binary cross-entropy loss is, how the math works, how to implement it from scratch in Python, and how to use it with PyTorch and Keras. By the end, you will understand why it is the…
Docker Captain May 7, 2026 Comparing Different Approaches to Sandboxing Docker Captain Siri Varma Vegiraju compares sandboxing methods for AI agents, from containers to microVMs. Learn how Docker Sandbox improves isolation, security, and performance. Read now
df says your disk is 80% full, but du says you’re barely using half, so one of them is lying, and it’s probably not the one you think.You’re debugging a full disk alert at 2 am, and the df command is showing red while du / comes back looking totally fine. You run both commands 3 times, thinking you misread something. The numbers don’t match, and now you’re doubting your own terminal.This happens on production Linux systems more often than you’d expect, and the fix is usually just 2 commands away once you understand what’s actually happening.Here’s the trick: df…