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How HTTPS Certificates Renew Themselves: Let's Encrypt and ACME Explained
Blog Summary
A tiny program on your server renews your HTTPS certificate while you sleep, until one day it quietly doesn't. How ACME and certbot work, why renewals fail months later, and the outside check that saves you.
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Containers vs Virtual Machines: What's Actually Different Under the Hood
Blog Summary
"A container is just a lightweight VM" is the most common explanation, and it's wrong in the ways that matter. Here's how hypervisors and shared kernels really differ, what that means for isolation and speed, and when to use which.
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MCP Joins the Linux Foundation: Why It Matters for Developers
Blog Summary
On 9 December 2025, Anthropic donated the Model Context Protocol to the new Agentic AI Foundation under the Linux Foundation, co-founded with OpenAI and Block. What neutral governance means for anyone building AI integrations.
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Hardening a Linux Server for a Laravel App: A Practical Checklist
Blog Summary
Bots start knocking on a new server within the hour. A practical hardening checklist for Laravel on Ubuntu: automatic updates, SSH keys only, a deny-by-default firewall, fail2ban, least-privilege file permissions, HTTPS and tested backups.
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Server Monitoring Basics: What to Watch Before Your Users Complain
Blog Summary
If your customers are your monitoring system, you hear about outages late and angry. Here's what to actually watch: disk trends, p95 response times, error rates, queue depth, scheduler heartbeats and uptime checks.
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Linux Permissions for Web Developers: Why chmod 777 Is Never the Fix
Blog Summary
"Permission denied" after a deploy, and someone suggests chmod -R 777. Here's how rwx, owners and groups really work, why 777 is dangerous, and a sane permission setup for Laravel's storage folder.
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01. About Shiroz
Mohammed Shiroz
Hi, I'm Mohammed Shiroz, a software engineer and AI enthusiast from Sri Lanka who turns ideas into intelligent, real-world solutions. With over 9 years of hands-on experience, I currently lead real estate ERP development at Kate Group, a...
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