We were using S3 as ternary storage for our time series database by moving values from the secondary SSD based storage to S3. Each of those values contained all the values for a full day. By using HTTP range queries and placing an index in the SSD store we were able to combine 30 days of values into a single S3 value to decrease the API PUT calls by 30x.

That's pretty impressive. I'd love to read a write-up about what you changed and how you analysed the problem.