There are redundant databases, networks, data centers and regions even. What can bring down 3 major systems this way? Any inputs? Facebook Instagram Whatsapp #facebook #whatsapp #instagram
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From experience at salesforce it’s likely a config change to prod, a db change update script, or a networking change that wasn’t tested well or staggered and likely had no back out plan.
Routing. Rule number one of the Internets: routing is hilariously fun to unfuck.
They wanted to solve DP hard during deployment and fcked
Lmao too bad Facebook doesn't do DP in interviews anymore, they could've been saved if only they knew...
What happened we want to know
Happens when you hire leetcode grinders than actual engineers.
When you create a issue just so that people forget about the whistleblower
using a linked list instead of a map
array?
DNS, BGP and the insanity that it brings with it
So DNS is a single point of failure? Seems weird to me
This will answer all your questions: https://blog.cloudflare.com/october-2021-facebook-outage/