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How to Use the Satellite Collections in ArangoDB
With the new Version 3.2, we have introduced a new feature called Satellite Collections. This post explains what this is all about and how it can help you, and give a concrete use case for which it is essential.
Join operations are very useful but can be troublesome in a distributed database. This is because quite often, a join operation has to bring together different pieces of your data that reside on different machines. This leads to cluster internal communication and can easily ruin query performance. As in many contexts nowadays, data locality is very important to avoid such headaches. There is no silver bullet because there will be many cases in which one cannot do much to improve data locality.
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