Flip a coin. Roll a die. Shuffle a deck. Now ask a CPU to do the same thing. That’s where things get interesting. A computer is a deterministic machine. Same inputs, same state, same output. Always. So when we ask it for a “random” number, we’re really asking it to fake unpredictability. Let’s dig into […]
For as long as most of us can remember, storage devices have had one job: hold onto data and hand it back when someone asks. Everything else happened on the CPU. Data was read from disk, pulled into memory, processed, and often discarded. That model worked when datasets were small. But the scale quietly changed. […]
If you’ve ever wondered how computers keep track of time across different time zones, operating systems, and programming languages, the answer lies in a simple yet elegant concept called Unix time, also known as epoch time, is formally defined in the POSIX standard and documented extensively on Wikipedia. So what exactly is Unix time? Unix […]
Web Push allows a server to deliver notifications to the browser, even when the application is not open. Once permission is granted, messages can be delivered without an active page or a live connection. What enables this is not a single API call, but coordination between the client, the backend, and a push service in […]
