Can I have 2 droplets in different regions that share exactly the same data?

So basically I have a few containers in my droplet (postgreseql and redis most importantly). I was thinking that if my app gets many users maybe a single droplet can have issues because too many requests at the same time might be an issue. Or even if the droplet has downtime due to the datacenter issues. Also, by having 2 droplet in different regions the users experience faster performance.

Can I have 2 droplets that have exactly the same data? and basically lets say I have 2 droplets, one in USA and 1 droplet in Amsterdam. Eurpean users would use the ams droplet and the american users would use the USA one and if either of them would have downtime then all users would be redirected to one of the droplets.

I have never run into any problems using droplet but I also never deployed an app and I am not sure how much load a single droplet can handle, like can 1 single droplet handle 1 million users?