Cache purging in a distributed networked system

A distributed networked system, comprising:

• a set of one or more processors;
• and
• a set of one or more non-transitory machine-readable storage mediums coupled with the set of one or more processors that stores instructions that, when executed by the set of one or more processors, causes the distributed networked system to perform operations including:
• receiving, at a first data center of a plurality of data centers of the distributed networked system, a first purge request to purge a first resource from cache;
• determining that the first purge request does not include a first cache key for the first resource, and responsive to this determination:
• determining that the first purge request is valid,
• purging the first resource from cache of the first data center,
• generating the first cache key for the first resource, and
• causing a second purge request that includes the generated first cache key to be sent to one or more other data centers of the plurality of data centers of the distributed network system, the second purge request to purge the first resource;
• receiving, at a second data center of the plurality of data centers of the distributed network system, the second purge request that includes the generated first cache key;
• and
• determining that the second purge request includes the generated first cache key for the first resource, and responsive to this determination:
• skipping determining whether the second purge request is valid, and
• purging, based on the generated first cache key, the first resource from cache of the second data center.

A non-transitory machine-readable storage medium that provides instructions that, if executed by one or more processors in a distributed network system will cause the distributed network system to perform operations comprising:

• receiving, at a first data center of a plurality of data centers of the distributed networked system, a first purge request to purge a first resource from cache;
• determining that the first purge request does not include a first cache key for the first resource, and responsive to this determination:
• determining that the first purge request is valid,
• purging the first resource from cache of the first data center,
• generating the first cache key for the first resource, and
• causing a second purge request that includes the generated first cache key to be sent to one or more other data centers of the plurality of data centers of the distributed network system, the second purge request to purge the first resource;
• receiving, at a second data center of the plurality of data centers of the distributed network system, the second purge request that includes the generated first cache key;
• and
• determining that the second purge request includes the generated first cache key for the first resource, and responsive to this determination:
• skipping determining whether the second purge request is valid, and
• purging, based on the generated first cache key, the first resource from cache of the second data center.