My Knowledge
blog and Updates
It's my personal blog and my post about what was my interested in. Not regularly. If you have any questions any discussion, I'm happy you get in touch with me, and try to answer as many as possible!
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- PostgreSQL
SQL vs NoSQL: How to Choose a Database Without the Hype
Blog Summary
"SQL doesn't scale" and "NoSQL is faster" are both half-truths. Four myths, one honest comparison table, when NoSQL really fits, and how MySQL JSON columns give you flexibility without a second database.
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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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OAuth 2.0 Explained Without the Jargon: The Valet Key Guide
Blog Summary
OAuth is a valet key for your data: it lets an app park the car without reading your mail. The authorization code flow with PKCE explained step by step, plus scopes, tokens and OAuth vs OpenID Connect.
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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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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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JWT Explained: What's Inside the Token and What Can Go Wrong
Blog Summary
Paste any JWT into a decoder and you can read it, no key needed. That surprises a lot of developers. Here's what's really inside a token, why base64 isn't encryption, and the mistakes that cause real breaches.
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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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