Merge pull request #572 from nookala/snookala/tnz-66733

TNZ-66733 - Update 10.3 and 10.4 docs to add language on customer rate limiting performance

Author: anita-flegg

deploy-apps/user-rate-limits.html.md.erb

@@ -185,6 +185,10 @@ Show client information including rate limits:
 cf user 9e8f3a67-71bd-4068-a907-8ee00185679c --client
 ```
 
+**Performance Implications**
+
+User rate limiting has been evaluated for performance. Existing authenticated CAPI calls require a database call, and the per-user rate limiting introduces a second call from the application to the db. The cost of the per-user rate limit is equal to or less than 0.35, this means the per-user rate limits are unlikely to affect performance.
+
 ## <a id="related-topics"></a> Related Topics
 
 - [Getting Started with the Tanzu cf CLI](../../operating/cf-cli/getting-started.html) - Basic CF CLI usage