Okaraai

Okaraai 🔬 Science & Technology
💡 Smart tools • Tech tips • Cool discoveries
📌 Sharing useful tech for everyday life

02/08/2026

Ever wonder what your browser is actually doing in that split second after you hit enter? 🌐⚡ DNS → TCP → TLS → HTTP → render — all under 200ms. Full breakdown 👇

28/07/2026

Quick question: did you know Python's while loop can have an else clause? Or that a while loop's condition is checked before the body runs, not after meaning it can execute zero times?

I put together a visual, line-by-line walkthrough of how while loops actually work watching a real ex*****on with live variables, a condition check, and printed output, plus the classic infinite-loop bug every programmer hits eventually.

Good one to send to anyone just starting to learn Python.

27/07/2026

Ever wonder how your SD card remembers photos even with zero power no battery, nothing? The answer is a genuinely clever piece of physics: a floating gate transistor that traps electrons behind an insulating wall they can't cross on their own.

This breaks down exactly how it works: writing a bit (forcing electrons through the barrier), erasing a bit (pulling them back out), reading a bit, and why every SD card and SSD eventually wears out and dies.

Anyone else's mind a little blown that this is what's inside every USB stick you own?

25/07/2026

Ever wonder why some code slows to a crawl as your data grows, while other code barely notices? It comes down to Big O notation and seeing all the common growth rates plotted on one graph makes it click in a way memorizing the formulas never does.

2-minute visual breakdown, no math background required. Would love to know if this is the way you were taught it, or if the graph makes it click differently.

25/07/2026

Ever had a query that worked perfectly in dev, then crawled once it hit production? There's usually one boring reason: a missing index.

In under 90 seconds: why nothing in your code has to change for a query to get slower and slower as a table grows, how to catch it with EXPLAIN (look for "Seq Scan"), and the one-line fix that keeps it fast at any scale.

Devs — what's the biggest table size that's ever bitten you? 👇

24/07/2026

Ever notice your app slows to a crawl as your data grows? There's usually one culprit: the N+1 query problem — when fetching related data quietly turns 1 query into 1,001.

In 90 seconds: what causes it, how it hides inside ORM code past code review, how to catch it with query logging, and the fix that brings it down to just 2 queries.

Devs — what's your worst N+1 story? 👇

06/07/2026

Your data isn’t finishing — apps are STEALING it 😤

What gadget do you use the most every day?
08/02/2026

What gadget do you use the most every day?

08/02/2026

👋 Welcome to Okaraai

This page is for people who love technology, smart tools, and simple tech tips.

Question for you 👇
What gadget do you use every day that you can’t live without?

Address

Gerard Kellestraat 19
Lekki
2522ZS

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Monday 08:00 - 20:00
Tuesday 08:00 - 20:00
Wednesday 08:00 - 20:00
Thursday 08:00 - 20:00
Friday 08:00 - 20:00
Saturday 08:00 - 20:00
Sunday 12:00 - 20:00

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+2348166185297

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