3 ms·
> WhatsApp? Is this so difficult to program? Just VOIP and messaging? Yes, it actually is that difficult to program. To scale to WhatsApp's level, you can't ju
by solatic 8y ago
> WhatsApp? Is this so difficult to program? Just VOIP and messaging?
Yes, it actually is that difficult to program. To scale to WhatsApp's level, you can't just base all your message-delivery off a Kafka cluster and be done with it. Amazon Chime still hasn't been deployed outside of us-east-1 and seems nowhere close to a global deployment.
The engineering effort to provide low-latency communications, at geographic and user scale, is very much non-trivial.