For reasons explained in the Introduction to conflict resolution, we strongly recommend adopting a conflict resolution strategy that requires applications to resolve siblings according to use-case-specific criteria. Here, we’ll provide a brief guide to conflict resolution using the official Riak Node.js client.
How the Node.js Client Handles Conflict Resolution
In the Riak Node.js client, the result of a fetch can possibly return an array of sibling objects. If there are no siblings, that property will return an array with one value in it.
Example: creating object with siblings
So what happens if the length of
rslt.values is greater than 1, as in the case
In order to resolve siblings, you need to either fetch, update and store a
canonical value, or choose a sibling from the
values array and store that as
the canonical value.
Basic Conflict Resolution Example
In this example, you will ignore the contents of the
values array and will
fetch, update and store the definitive value.
Example: resolving siblings via store
Choosing a value from
This example shows a basic sibling resolution strategy in which the first sibling is chosen as the canonical value.
Example: resolving siblings via first
This example shows a basic sibling resolution strategy in which the first sibling is chosen as the canonical value via a conflict resolution function.