How is failover handled in case of database sharding?

Question

I have been trying to understand how database sharing works. Let’s say I have a database with two separate shards, one for customers whose last names begin with letters A through M and another for those whose names begin with the letters N through Z. If the first shared handling customer A through M goes down for some reason, how is the failover handled?

Thank you

question from:https://stackoverflow.com/questions/65877639/how-is-failover-handled-in-case-of-database-sharding

Answer 1

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