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9 Performance Quick Wins for PHP Sites That Take Minutes, Not Rewrites
Blog Summary
Most slow PHP sites aren't slow because of PHP. OPcache, framework caching, indexes, queues, images and cache headers: nine boring fixes that make a site feel fast, and the gotcha in each.
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Docker Mistakes That Make Your Images Huge and Your Builds Slow
Blog Summary
You change one line and Docker reinstalls everything. Missing .dockerignore, bad layer order, dev tools in production, root users and latest tags are the usual culprits. Here's the fix, with a multi-stage build.
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Two-Factor Authentication: How Those Six-Digit TOTP Codes Actually Work
Blog Summary
Your authenticator app and the server agree on the same six digits with no network at all. Here's the shared secret, the 30-second clock and the HMAC behind it, plus where 2FA is strong and where it isn't.
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Content Delivery Networks: How a CDN Makes Your Site Faster (and How It Can Bite)
Blog Summary
Your server is in one city and your users are everywhere. A CDN moves copies of your files closer to them. How edge caching works, the Cache-Control headers that drive it, invalidation, images, security, and the mistake that leaks pages.
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Backups You Can Actually Restore: A Practical Strategy for Web Apps
Blog Summary
Most backup failures aren't missing backups. They're backups that silently stopped, can't be decrypted, or were never tested. A practical strategy built backwards from the restore: 3-2-1, dumps vs snapshots, encryption, retention and restore drills.
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SSH Keys Explained: How They Work and How to Use Them Safely
Blog Summary
Bots try passwords on every server, all day. SSH keys make that pointless. Here's how key pairs work, a step-by-step ed25519 setup, the sshd_config gotcha that keeps passwords on, and habits that keep keys safe.
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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...
02. Last Posts
03.My Projects
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