Upcoming ArangoDB 3.7 and Storage Engines

10GeneralTags: ,


ArangoDB has supported two storage engines for a while: RocksDB and MMFiles. While ArangoDB started out with just the MMFiles storage engine in its early days, RocksDB became the default storage engine in the 3.4 release. Due to its drawbacks ArangoDB 3.6 deprecated the old MMFiles storage engine and with the upcoming 3.7 release we plan to fully remove support. This blog post will provide the background of why storage engines matter, why we chose to deprecate the MMFiles storage engine, and what you should be aware of when migrating from MMFiles to the RocksDB storage engine. Read more

Disk space usage in ArangoDB

02Architecture, General, PerformanceTags: ,

In this post we’ll explain how ArangoDB stores collection data on disk and look at its storage space requirements, compared to other popular NoSQL databases such as CouchDB and MongoDB.

How ArangoDB allocates disk space

ArangoDB stores documents in collections. The collection data is persisted on disk so it does not get lost in case of a server restart.
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