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How a Hash Map Works (and Why Your PHP Array Is Secretly One)
Blog Summary
Finding one item among millions without searching sounds like cheating. It's a hash map. Buckets, hash functions, collisions, why lookups are O(1) on average, a 2011 security scare, and what it means for PHP arrays.
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Concurrency vs Parallelism, Explained With a Kitchen
Blog Summary
One cook can serve dinner for six by never standing still while the water boils. That's concurrency. A kitchen in four scenes, with Node and Laravel examples, and how to tell which one your slow code needs.
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How Search Engines Index Your Site: SEO for Developers, Explained
Blog Summary
SEO isn't just keywords and marketing. Most of it is plumbing developers control: crawling, sitemaps, canonical URLs, status codes, structured data and speed. Follow a page from discovery to search result, with a Laravel sitemap.
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PHP Performance Mistakes Hiding in Your Loops and Queries
Blog Summary
Slow PHP is rarely slow because of PHP. It's usually a query inside a loop, a lookup repeated ten thousand times, or a whole table loaded into memory. Six common mistakes with before-and-after code, plus one myth you can stop worrying about.
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Laravel Caching Strategies That Actually Help (and the Ones That Bite)
Blog Summary
Caching is the quickest way to make a slow Laravel app fast, and the quickest way to make a correct one wrong. Cache keys, invalidation on model events, tags, stale-while-revalidate, warming, and what you should never cache.
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How HTTP/2 and HTTP/3 Make the Web Faster (Without Changing Your Code)
Blog Summary
Your page needs dozens of files, and HTTP/1.1 fetched them through a handful of narrow pipes. HTTP/2 and HTTP/3 changed that: multiplexing, header compression, QUIC over UDP, and the head-of-line blocking problem explained simply.
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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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