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Comment by rdoherty | Hacker News Reader

When I was there it was in the low hundreds of thousands. Probably more as growth was still in double digit percentages per year of user base.

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>When I was there it was in the low hundreds of thousands.

Blows my mind every time I see these kind of numbers.

Indeed. According to this in 2022[0], Stack Overflow is still running off of 9 web servers.

[0] https://www.datacenterdynamics.com/en/news/stack-overflow-st...

Social media org like Linkedin is hardly comparable with SO style KB the R/W workloads are much higher with Social media, than a KB where vast majority of the transactions can be cached, Wikipedia would be a better comparison to SO.

Also Linkedin is 100x the size in users : 1B vs just around ~15M for StackOverflow.

There are 1B user on LinkedIn ? WOAH !

All of a sudden the scale makes much more sense although I will have to fact check this because the number seems absurdly high for a professional platform.

Here you go, they hit 1B milestone last month

https://news.yahoo.com/linkedin-now-1b-users-turns-125845570...

Thanks. Considering Facebook only has 3B user worldwide. I say a social media platform with 1B user is extremely impressive.

DAU/MAU is the more accurate metric to track by. Not as many people would log in to linkedin everyday also people create a profile and never log in again or only login when they are looking actively for a new job.

Facebook itself has been having significant loss of engagement in recent years. Instagram and WhatsApp are far more likely to have higher DAU than FB main app.

Quick math: 10000 users per machine?

Not considering that 90% of all users are likely sleepy accounts.

Rumor has it, half of them are busy sending out all those millions of unread emails I have in my inbox, about how my “career is on a roll”.

FYI even at their scale the headcount cost is greater man hardware cost.

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