I have a lot of respect for the author of that page, Alex Gorrod. However, this benchmark is quite dated (2014). The WiredTiger codebase was still immature when

I have a lot of respect for the author of that page, Alex Gorrod. However, this benchmark is quite dated (2014). The WiredTiger codebase was still immature when it was written. Since WiredTiger's acquisition by MongoDB (the company) and integration in to MongoDB (the database), the btree and LSM implementations have undergone extensive changes and are now much more hardened and adapted to production workloads. Furthermore it would be worth considering other engines such as InnoDb (btree) and RocksDB (LSM), which along with WiredTiger are considered the leading open source storage engines. For more recent and realistic benchmarks you should look at the work of Mark Callaghan.