Latency measurement in resource requests

A computer-implemented system comprising:

• a data store configured to store computer-executable instructions;
• and
• a hardware processor in communication with the data store, the hardware processor corresponding to a service provider and configured to execute the computer-executable instructions to at least:
• obtain, from a client computing device, a first request for content at an identifiable component of the service provider, the first request for content corresponding to an embedded resource identifier;
• transmit responsive processing information, wherein the responsive processing information includes information for identifying an alternative resource identifier and a command for causing a subsequent request for content corresponding to the alternative resource identifier to be transmitted by the client computing device to the service provider;
• obtain, from the client computing device, the subsequent request for content at an identifiable component of the service provider, the subsequent request for content corresponding to the alternative resource identifier;
• and
• determine performance metric information corresponding to the first and subsequent requests for content, the performance metric information corresponding, at least in part, to a communication latency between the client computing device and respective identifiable components of the service provider for the first and subsequent requests for content.