Pricing and resource formation on Digitalocean?

Question

linux

Hello, I'm very interested in DO.
2 questions arose:
1. How is the price for a droplet formed? I choose for example 3 droplets at a rate of $10. The price, as I understand it, comes from the hours spent, or is it just broken down for example into hours the price? Those. I mean, if I created 3 droplets - and they weren't used at all, would I pay $30 or just hours of use?
2. As I understand it, DO has powerful server hardware + ssd. Thinking about what is the best rate to take? In order not to run into resources when transferring a project. Do you need to immediately take at least 2 droplets - set one as a balancer, the second as a backend, and in which case add new droplets to the "cluster"?

And about the load, 1GB RAM, 1CPU, 30GB SSD ($10). What load will 1 such droplet (prs) apache + php + mysql hold? Again, approximately.

Now on the project 600prs. Stack: nginx (static), apache, php, mysql, redis.

Answer 1

1. First, the price goes hourly, when it reaches 10 ye it stops growing
DO reserves ip + disk + cpu for you - they think you use
AND yes, you pay first in hours Downgrade is not available It’s not worth doing a “complex” architecture right away It’s also not worth it to specialize servers right away Those put everything on one machine and grow, then add resources and grow further Remove Apache and get a performance increase of 600 rps per backend or with unoptimized static, which cached? for load tests there are 3 hours we hammer the page with a hundred simultaneous "users"
or in jmeter we load nginx logs and it emulates visitors not only to the home page, but to the entire site

Answer 2

Some kind of heresy you wrote, put everything on one droplet at any time, you can expand it and increase resources only upwards