Posts
All the articles I've posted.
"Sent" is not the same as "delivered". Delivery guarantees in NATS
Updated:Part 1 of a series on NATS. Core NATS loses messages silently, JetStream delivers them more than once, and neither is a bug. What each guarantee costs, shown with runnable Python demos.
One worker is not keeping up. Consumer concurrency in NATS
Updated:Part 2 of a series on NATS. Adding a second worker is not more of the same problem: shared pools versus fan-out, what asyncio buys you and what the GIL takes back, and what ordering costs measured in messages per second.