I would advise that you try to fit the working set into memory before spending on provisioned IOPS. Reading a lot of data from network storage constantly should be avoided as much as possible, having more IOPS doesn't necessarily improve read latency.

Provisioned IOPS is much more expensive though, so make sure you really need it. If you use general IOPS you can monitor your burst balance. You can always start with general and then move to provisioned when you need it too.

Thanks. If I'm reading this https://ibb.co/bNGmrCB correctly, it seems like we have plenty burst balance. Does this seem to indicate that provisioned IOPS is unlikely to help us here?

Yeah you're looking good though I would recommend adding a CloudWatch alert to make sure it doesn't sneak up on you. IIRC in general provisioned IOPS can help with other performance attributes like throughput so I would look at the differences documented by AWS and then take a look at all of the relevant metrics to be certain.

Oh interesting, thanks. So PIOPS may help even if we're not getting low on balance. Will dig into the docs some more. Thanks!

Thank you so much, will definitely take you up on the offer.