Hacker News new | ask | show | jobs
by uji 3201 days ago
Is Amazon comfortable enough to create single point of failure. What if DDB goes down assuming they run same stack for both retail and AWS?
2 comments
phamilton 3201 days ago
> What if DDB goes down

It's worth clarifying that question. What does "Go Down" mean? One region is down? Is it a bad software bug?

The database itself is fault tolerant. Nodes can go down all day without any real consequence. Each region is isolated, so a failure in one region won't affect other regions.

I guess I'm at a loss for the type of failure with DDB that would make it a SPOF, especially more than other datastores.

link
dx034 3201 days ago
How do they structure regions? Is amazon.co.uk running on different regions than amazon.com? Or everything distributed globally?
link
yeukhon 3201 days ago
They introduce change one region at a time usually. DDB did have outage many times and brought half of AWS operations down. But good question how they kept Amazon.com alive if some part of their systems rely on DDB.

[1]: https://aws.amazon.com/message/5467D2/

link