Please consider the following topology of some organization, consisting of 4 branches (A,B,C,D). All branches are located in different geo locations and interconnected with VPN.
This organization using a solution based on MySQL. In order to provide High Availability and improve scalability, I considering to use MySQL Group Replication. I planning to put in each branch a database node, so all "read" operations will be performed from local node, while "write" operations will be performed on primary "master".
I reviewed MySQL documentation several times but I can't find a clear answer to this question: in case of VPN disconnection in some branch (e.g. database will be not connected anymore to Group), does that branch still will be able to perform "read" operations against local database node?
This organization using a solution based on MySQL. In order to provide High Availability and improve scalability, I considering to use MySQL Group Replication. I planning to put in each branch a database node, so all "read" operations will be performed from local node, while "write" operations will be performed on primary "master".
I reviewed MySQL documentation several times but I can't find a clear answer to this question: in case of VPN disconnection in some branch (e.g. database will be not connected anymore to Group), does that branch still will be able to perform "read" operations against local database node?