diff --git a/docs/Guides/Recommendations.md b/docs/Guides/Recommendations.md
index f0ee7b1985..ad40fb8458 100644
--- a/docs/Guides/Recommendations.md
+++ b/docs/Guides/Recommendations.md
@@ -8,7 +8,8 @@ This document contains a set of recommendations when using Fastify.
- [HAProxy](#haproxy)
- [Nginx](#nginx)
- [Kubernetes](#kubernetes)
-
+- [Kubernetes](#kubernetes)
+- [Capacity Planning For Production](#capacity)
## Use A Reverse Proxy
@@ -298,3 +299,38 @@ readinessProbe:
timeoutSeconds: 3
successThreshold: 1
failureThreshold: 5
+```
+
+## Capacity Planning For Production
+
+
+In order to rightsize the production environment for your Fastify application,
+you are highly recommended to perform your own measurements against
+different configurations of the environment, which may
+use real CPU cores, virtual CPU cores (vCPU), or even fractional
+vCPU cores. We will use the term vCPU throughout this
+recommendation to represent any CPU type.
+
+You can use such tools as [k6](https://github.com/grafana/k6)
+or [autocannon](https://github.com/mcollina/autocannon) for conducting
+the necessary performance tests.
+
+That said, you may also consider the following as a rule of a thumb:
+
+* In order to have the lowest possible latency, 2 vCPU are recommended per app
+instance (e.g., a k8s pod). The second vCPU will mostly be used by the
+garbage collector (GC) and libuv threadpool. This will minimize the latency
+for your users, as well as the memory usage, as the GC will be run more
+frequently. Also, the main thread won't have to stop to let the GC run.
+
+* In order to optimize for throughput (handling the largest possible amount of
+requests per second per vCPU available), consider using smaller amount of vCPUs
+per app instance. It is totally fine to run Node.js application with 1 vCPU.
+
+* You may experiment with even smaller amount of vCPU, which may provide even
+better throughput in certain use-cases. There are reports of e. g. API gateway
+solutions working well with 100m-200m vCPU in Kubernetes.
+
+See [Node's Event Loop From the Inside Out ](https://www.youtube.com/watch?v=P9csgxBgaZ8)
+in order to understand the workings of Node.js in greater detail and make a
+better determination about what your specific application needs.