For small files (less than 4MB), the number of Get/Put/Delete is the same comparing using S3 directly. For larger file, each object in S3 is about 4MiB. Most of S3 Client will do the similar thing to GET/PUT small parts in parallel to speed things up. Overall, JuiceFS should use the similar number of GET/PUT request comparing to use S3 directly.

Second, all the List and Head request go to Redis, they are free, so you may save some cost on API costs.

Third, the frequently read data will be cached in your local disks, so you will also save some cost on GET/PUT requests.