Ask HN: How frequently do VMs fail in real-world setups?

Posted by philippta on Wednesday February 14, 2024 @12:24PM
from the ask-hn dept.

I have never seen a virtual machine fail, but in modern tech everything needs to have more than enough redundancy.

When did Primary-Standby setups fall out of fashion in favor of multi node (3 or 5) raft setups, and why?

( 3 comments | 2 points | on HN )

Re:Ask HN: How frequently do VMs fail in real-world setups? by stop50 on Wednesday February 14, 2024 @12:32PM (#39372558)

Raft and similar consensus algorithms have the advantage that multiple nodes can process data, while primary-standby only reads are distributed. Databases are a good example: each node needs to process a lot of data, but written they are rather small, so it makes sense to distribute the requests and let an node only deal with 1/3 of the requests instead of an node with 100% of the requests that gets overloaded with them.

[ Parent | on HN ]

Re:Ask HN: How frequently do VMs fail in real-world setups? by cranberryturkey on Wednesday February 14, 2024 @12:27PM (#39372500)

more tooling!!!!111

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Re:Ask HN: How frequently do VMs fail in real-world setups? by intesars on Wednesday February 14, 2024 @06:34PM (#39377099)

Virtual Machines (VMs) rarely fail, but leadership is understandably hesitant to risk downtime. Implementing a multi-node architecture offers both easier and more cost-effective assurance for ensuring the availability and reliability of applications. Opting for redundancy is a logical decision, driven by the need for reliability rather than technical concerns.

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