Monitoring availability of content delivery networks

A computer implemented method for performing a check of a service provider which is configured to communicate with one or more client devices and with a content provider, the method comprising:

• transmitting a plurality of queries to a plurality of potential endpoints of a service provider, the queries corresponding to indications of availability of the endpoints to process client requests;
• receiving a plurality of responses transmitted from the plurality of potential endpoints in response to the plurality of queries, the plurality of responses indicative of the availability of the endpoints to process client requests, wherein a response received from a potential endpoint comprises one or more of the following:
• versions of content stored by the endpoint to be requested by the one or more client devices, and indication of whether the content stored by the endpoint to be requested by the one or more client devices is stale or not;
• analyzing the plurality of responses;
• generating a plurality of updated availability information;
• updating an availability data store using the plurality of updated availability information;
• and
• communicating report information to the service provider, the report information based at least in part on the availability data store and indicative of which endpoints are to be accessed for content.

A non-transitory computer storage having stored thereon instructions that, when executed by a computer system configured to communicate with one or more client devices and with a content provider, cause the computer system to:

• transmit a plurality of queries to a plurality of potential endpoints of a service provider, the queries corresponding to indications of availability of the endpoints to process client requests;
• receive a plurality of responses transmitted from the plurality of potential endpoints in response to the plurality of queries, the plurality of responses indicative of the availability of the endpoints to process client requests, wherein a response received from a potential endpoint comprises one or more of the following:
• versions of content stored by the endpoint to be requested by the one or more client devices, and indication of whether the content stored by the endpoint to be requested by the one or more client devices is stale or not;
• analyze the plurality of responses;
• generate a plurality of updated availability information;
• update an availability data store using the plurality of updated availability information;
• and
• communicate report information to the service provider, the report information based at least in part on the availability data store and indicative of which endpoints are to be accessed for content.