Quickwit has only been tested on AWS S3. This page sums up what we have learned from that.
Cloud providers charge for data transfers in and out of their networks. In addition, querying an index from a remote machine adds some extra latency. For those reasons, we recommend that you test and use the Quickwit from an instance located within your cloud provider's network.
To get the best performance out of Quickwit search from object storage, we recommend picking an instance with high network bandwidth.
In our experience,
c5n.2xlarge instances offer the bigger bang for your buck.
A final note on object storage requests costs. These are quite low actually, $0,0004 / 1000 requests for GET and $0.005 / 1000 requests for PUT on AWS S3, so you don't need to worry too much about it.
Indeed when indexing, Quickwit generates splits of 5 millions documents each and then upload them. As they are composed of 9 files, this generates 9 PUT requests per split. When querying one term, Quickwit only needs to make 3 GET requests per split.
Of course, these requests could add up quickly if you have a large amount of requests. Don't hesitate to contact us if this is the case :).