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Learning Neo4j 3.x - Second Edition by Rik Van Bruggen, Jérôme Baton

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The bolt+routing protocol

The bolt+routing protocol is a variant of the bolt protocol. Now, bolt is the default but you can (or must) also use bolt+routing as protocol in your client code. That will allow you to specify a FOLLOWER core server as the recipient of graph updates, as the couple server and driver will route the updates to the LEADER.

A FOLLOWER may become a LEADER if the LEADER fails. If this happens, the core servers will proceed to an election at the majority.

In order to be able to run an update query in the Neo4j browser of a FOLLOWER host, you may tick use bolt+routing in the left column in the tab with the gear icon. Then, an updating query like the following will work without error:

CREATE(ju:Person {name:"MonChéri"}), ...

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