[AdamProut]

We do still use skiplists for in-memory rowstore indexes. They're great for very high throughput writes (less good for scans). In the years since this blog post most of our engineering effort went towards building a columnstore that supports efficient point (few row) read and write queries without giving up the traditional very fast scan performance of a regular columnstore. This is now our default table storage.

Much details in our SIGMOD 2022 paper from June: https://dl.acm.org/doi/abs/10.1145/3514221.3526055

(disclosure: SingleStore/MemSQL CTO)