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Big O Notation for Working Developers: Finding the Loop That Doesn't Scale
Blog Summary
Big O isn't interview trivia. It's the reason code that handles 200 rows times out at 20,000. Here's a practical guide with real examples: hidden nested loops, database indexes, N+1 queries, and when it doesn't matter.
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What Happens Inside a PHP Request: From Apache to Your Laravel Controller
Blog Summary
Your controller is the last stop on a surprisingly long trip. Follow one request from Apache through PHP-FPM, Laravel's bootstrap, middleware and the router, and see why PHP rebuilds everything every time and how OPcache saves it.
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How the Browser Turns HTML Into Pixels (and Why Your Page Still Feels Slow)
Blog Summary
Your API answered fast, but the page still stutters. Walk the browser's rendering pipeline from DOM and CSSOM to layout, paint and composite, and learn which changes make it do expensive work.
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Caching Explained: From the Browser Cache to Redis, Layer by Layer
Blog Summary
The fastest request is the one that never reaches your server. Here's every cache layer a request passes through, from the browser to Redis, plus the two problems that make caching hard: invalidation and the cache stampede.
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Five Eloquent Mistakes That Quietly Slow Down Your Laravel App
Blog Summary
Eloquent makes database code read like English, which is exactly why its slowest patterns look so innocent. Five common mistakes, why each one hurts as your tables grow, and the one-line fix for every one of them.
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How a Database Index Works: A B-Tree in Five Minutes
Blog Summary
You added an index and the query is still slow. Or you added five and now inserts crawl. Both make sense once you can picture a B-tree. Here's the phone book version, in five short minutes.
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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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