Cache Efficiency

CDN allows you to measure cache efficiency based on the ratio of successful (hit) and unsuccessful (miss) requests using the following formula:

Cache hit ratio =  [Hits / (Hits + Misses)] x 100 %

From the principle of operation, it is not possible to reach a value of 100%, however, the higher this value is, the more efficient the cache is. The customer can influence the effectiveness of the cache by setting the Cache-Control header or directly enforcing it for all static content in the CDN settings. It should also be kept in mind that high cache time values ​​increase the time it takes for changes to propagate from the source server.

In the CDN administration in the Client Zone, you can see the Hits:Misses ratio after clicking on the domain in a graph in which the time period can be adjusted

and it is also possible to switch the display from graph to table: