Writing

Follow ₹500 through UPI, from your phone to RBI: why PhonePe needs a bank, why banks settle hours later, and who pays for a payment that costs you nothing.

My first trip abroad: what I noticed in the UAE, from zebra crossings and cloud seeding to cheap gold and low taxes.

The QUERY method is used to ask the target resource to perform a query operation within the scope of that target resource.

A CLI tool that goes beyond speed testing. Checking download/upload, ping, jitter, bufferbloat, regional latency, and IP & DNS info.

What rate limiting is, how common algorithms compare, and how Stripe and OpenAI apply limits in production.