[leg]

Anywhere Cache and Rapid Storage share some infrastructure inside of GCS and both are good solutions for improving GCS performance, but Anywhere Cache is an SSD cache in front of the normal buckets while Rapid Storage is a new type of bucket.

(I work on Google storage)

[minzi]

Can you expand a bit on when it would make sense to use one versus the other?

[leg]

Anywhere Cache shines in front of a multi-regional bucket. Once the data is cached, there's no egress charges and there's much better latency. This is great for someone who looks for spot compute capacity to run computations anywhere in the multi-region. It will also improve performance in front of regional buckets but as a cache, you'll see the difference between hits and misses.

Rapid Storage will have all of your data local and fast, including writes. It also adds the ability to have fast durable appends, which is something you can't get from the standard buckets.