Client originated cache key modifiers in edge caching systems

One or more non-transitory machine-readable media having program code stored thereon, the program code comprising instructions to:

• obtain a request for an asset from a client;
• determine whether the request comprises a cache key modifier based on a header of the request;
• based on a determination that the request comprises a cache key modifier, generate a modified cache key based on the cache key modifier, wherein the cache key modifier was determined by the client based on a current time or based on one or more fingerprints of a response previously obtained by the client, wherein the instructions to generate the modified cache key comprise instructions to, compute a cache key;
• and
• modify the cache key with the cache key modifier, wherein the modified cache key comprises the cache key as modified by the cache key modifier;
• and
• fulfill the request for the asset based on a determination of whether the modified cache key identifies a cached version of the asset.

A system comprising:

• a first device comprising a first processor and a first machine-readable medium having instructions stored thereon that are executable by the first processor to cause the first device to,
• construct a request for a resource that comprises a cache key modifier, wherein the instructions to construct the request for the resource comprise instructions to,
• determine the cache key modifier based on a first criterion, wherein the instructions executable by the first processor to cause the first device to determine the cache key modifier based on the first criterion comprise instructions executable by the first processor to cause the first device to determine the cache key modifier based on a current time or based on one or more fingerprints of a response previously obtained by the first device;
• and
• incorporate the cache key modifier in at least one of a header field and a query parameter of the request for the resource;
• a cache server comprising a second processor and a second machine-readable medium having instructions stored thereon that are executable by the second processor to cause the cache server to,
• generate a modified cache key based on the cache key modifier, wherein the instructions executable by the second processor to cause the cache server to generate the modified cache key comprise instructions executable by the second processor to cause the cache server to, based on computation of a cache key upon receiving the request for the resource, modify the cache key with the cache key modifier to generate the modified cache key;
• and
• fulfill the request based on a result of searching cache memory of the cache server for the resource with the modified cache key.