StrikeTracker KnowledgeBase

Analytics Overview Cache Miss Ratio

By selecting the Cache Miss Ratio button in the Overview Area, charts are displayed showing the Cache Miss Ratio based on delivery and requests. A cache miss occurs when the CDN has to request the content from the customer's origin.

Analytics Overview Cache Miss Ratio

Transfer Miss Ratio

A graph is displayed showing the Total Delivery in GB, Total Ingest from the origin in GB, and Cache Transfer Miss Ratio for the current month. The Cache Transfer Miss Ratio for delivery is calculated by taking the total amount of content ingested from the origin for the given month, divided by the total amount of data delivered by the CDN.

Lower miss ratios are desired, showing a large amount of CDN delivery with a small amount of origin ingest. A number of things can affect this transfer miss ratio, including newly added content or frequently updated content. For content already on the CDN that has expired, an if-modified-since request will be sent to the origin on next request, and if the origin responds with a 304 not modified, the content does not need to be re-ingested.

Analytics Overview Cache Miss Ratio

Request Miss Ratio

A graph is displayed showing the Total Delivery Requests, Total Ingest Requests, and Request Miss Ratio for the current month. The Cache Miss ratio for requests is calculated by taking the total number of ingest requests to the origin for the given month, divided by the total number of requests to the CDN for delivery of content.

Lower miss ratios are desired, showing a large number of hits to the CDN with a small number of hits to the origin for ingest. A number of things can affect this request ratio, including requests for new content or content that has lower TTL (time to live) values, as the CDN will have to make more frequent requests to the origin for new or expired content.

Analytics Overview Cache Miss Ratio

Origin Transfer (Mbps)

A line graph displays transfer rate from the origin in Mbps (Mega bits per second) over the given month with data aggregated into one hour intervals. By hovering over the graph, both a maximum and minimum transfer rate will be displayed for the date and time interval.

Analytics Overview Cache Miss Ratio

Origin Request Rate (RPS)

A line graph displays requests per second rate to the origin over the given month with data aggregated into one hour intervals. By hovering over the graph, both a maximum and minimum request per second rate will be displayed for the date and time interval.

Analytics Overview Cache Miss Ratio