Replication-3,Consistency-Local_Quorum,Nodes-10,How many nodes
afford to go down so that application is not affected.
This question was
closed
by
Erick Ramirez for the following reason: The question is answered, right answer was accepted
How many nodes can be down with replication factor of 3 and consistency LOCAL_QUORUM?
if you have replication factor 3 per datacenter, and you read or write with LOCAL_QUORUM, you can at maximum afford to have one node down before your application is affected.
Does this answer your question?
Nodes-20,5 nodes can be afforded to be down, What can be the
replication factor- ?
To add to Bettina's answer, I think you missed the point.
Requests with consistency level LOCAL_QUORUM with the recommended replication factor of 3 requires a quorum of 3 replicas -- with quorum being "50% + 1", that means 2 out of 3 replicas are required to satisfy the request.
As I understand it, you've passed the certification for both Administrator Associate and Developer Associate so I think you should be able to work out how many replicas you need for requests to succeed when you have 5 nodes down in a 20-node DC using the formula I provided. Cheers!
your right that i have passed certification but i want to check my ans with you i know the formula and better know how to use it.
6 People are following this question.
