Re:WhatsApp scaled to 1B users with only 50 engineers
by ksec on Monday October 25, 2021 @01:14PM
(#28990407)
>WhatsApp success is not about what WhatsApp did, it's about everything they didn't do.
I wrote something similar [1] about its success not long ago on HN,
>WhatApp grew because it was the only IM that worked on Smartphone. Thanks to Erlang. Yes. ICQ didn't bother. Microsoft refuse to accept Smartphone is the future of computing hence there never was MSN on Smartphone. Other contender tried but none of them managed to Scale. I still remember all my colleagues and friends used to download instant messenger on our phone to test them out, creating a group and basically DDoS each other until the system or network crash. No IM was able to handle the traffic load, not only WhatsApp did it many times better than their competitors, they also had almost all platform support, from Symbian to Blackberry.
There is another part of the story that dont get much appreciation, is how they managed 2 million connection per box on a what is now a relatively slow server. The latest M1 Max would have been a lot faster. I often wonder if they could have pushed to 10 Million connection per box with same latency under current CPU and Memory. ( Not saying it is a good idea. )
I wrote something similar [1] about its success not long ago on HN,
>WhatApp grew because it was the only IM that worked on Smartphone. Thanks to Erlang. Yes. ICQ didn't bother. Microsoft refuse to accept Smartphone is the future of computing hence there never was MSN on Smartphone. Other contender tried but none of them managed to Scale. I still remember all my colleagues and friends used to download instant messenger on our phone to test them out, creating a group and basically DDoS each other until the system or network crash. No IM was able to handle the traffic load, not only WhatsApp did it many times better than their competitors, they also had almost all platform support, from Symbian to Blackberry.
There is another part of the story that dont get much appreciation, is how they managed 2 million connection per box on a what is now a relatively slow server. The latest M1 Max would have been a lot faster. I often wonder if they could have pushed to 10 Million connection per box with same latency under current CPU and Memory. ( Not saying it is a good idea. )
[1] https://news.ycombinator.com/item?id=25984924