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From AltschoolAfrica Student to Software Engineer Intern: A Personal Account of My Internship Journey
How I got my first software engineer role and my experience so far...
Latest articles
Message Queues: Why Your API Should Not Wait for Everything to Finish
Picture a bulk payment endpoint that processes a batch upload of employee salaries. For every row in the file, it debits the company account, credits the employee, sends a payslip email, and writes a
Idempotency: Why Tapping Send Twice Should Never Charge You Twice
Chidi owes his friend ₦15,000 for his share of a restaurant bill. He opens his banking app, types in the amount, taps Send, and the screen hangs on a spinner. He waits. Nothing happens, and he cannot
AI Made Your Team Faster. It Also Made Your Mistakes Permanent.
Building software used to be slow enough to make you think. That's not a complaint. The friction was a feature. Before your team committed to anything, they had to justify it, refine it, and argue abo
Introduction to Computer Networks
How Digital Communication Really Works
Inside the Query Optimizer: How Databases choose and Evaluate Query Plans
You write a query. The database runs it. You get your result. Simple, right? Not quite. Before your query ever runs, the database is already making decisions behind the scenes. It evaluates different
How to Read Query Execution Plans and Fix Slow Queries
You run a query, and it feels slow. You tweak the SQL. Add a condition. Rearrange a join. Sometimes it helps. Sometimes nothing changes. At this point, many developers are guessing. But the database i
Why Some Queries Are Fast and Others Are Slow.
How Databases Optimize Performance
What Happens When You Run a Query? From SQL to Results
When you write a query like: SELECT * FROM users WHERE id = 10; it feels simple. You send a request, and the database returns the result. But behind that one line of SQL, a lot is happening. The data
