Get familiar with these best practices to reduce the risk of traffic overload or other performance incidents.
Make sure you limit the number of matches to 250 or fewer. Submitting more than 250 invalidation requests at one time may result in a global invalidation — that is, revalidating all content for a host header. To avoid this, invalidate multiple objects or paths in one request, as described in Best practices for multiple requests.
Avoid matching on content that is unique to a single or few users.
Try to submit fewer than 100 requests per day. While processing more matches or requests on a particular day shouldn't result in any incidents, consistently exceeding the recommended limits may result in degraded performance, as measured by timely refreshing of the objects.
Note that the ECCU only invalidates content. If you need to actively remove any objects from your cache, use other purging categories.
Updated about 1 year ago