How much RAM/CPU will this need?

I’m going to run the following software on an Ubuntu droplet:

  • PostgreSQL
  • An ASP.NET Core Server app
  • A Discourse Server (has it’s own PostgreSQL)

I will be running these each in Docker containers behind NGINX. How much RAM/CPU will I need? Assume the server will get an average amount of steady traffic (nothing too big/small).

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Hello there,

Choosing the right Droplet plan depends on your workload. An oversized Droplet would underuse its resources and cost more, but an undersized Droplet running at full CPU or memory would suffer from degraded performance or errors.

To help you pick the best Droplet plan for your use case, this article explains the differences between shared and dedicated CPUs, goes into detail on each Droplet plan, and concludes with how to make a data-driven decision.

You can also resize a Droplet to a larger plan after creation, including resizing to a larger Droplet plan of a different kind. For example, you can resize from a Basic Droplet plan to a larger CPU-Optimized Droplet plan. See the Droplet pricing page for a full list of plans and prices.



Since it looks like you’ll be running two instances of PostgreSQL and ASP.NET, I would recommend at least a 2GB Droplet to start with, though you may want to consider the 4GB Droplet to give you a little room to breath. Docker, on its own, doesn’t require a ton of resources, though when you’re running a number of containers, it can begin to add up.

Database Servers, such as PostgreSQL, MySQL/MariaDB, Percona and similar tend to need more a little more RAM, so having the extra room will be beneficial.

Just pick one that seems right and monitor your droplet to determine whether you need more or less.