Internet-based proxy service for responding to server offline errors

A proxy server to respond to server offline errors, comprising:

• a memory to store instructions;
• a processor coupled with the memory to process the stored instructions to:
• receive, from a client device, a request to perform an action on an identified resource hosted at an origin server for a domain;
• transmit the request to the origin server;
• determine whether the origin server is offline;
• and
• responsive to a determination that the origin server is offline, perform the following:
• determine that the requested resource is available in cache,
• retrieve the requested resource from the cache,
• transmit an offline browsing cookie to the client device for the domain such that when a subsequent request is received from the client device for a resource of the domain that includes the offline browsing cookie, a cached version of the requested resource is to be served instead of querying the origin server, and
• transmit the requested resource to the client device.

A non-transitory machine-readable storage medium that provides instructions that, when executed by a processor of a proxy server, cause said processor to perform operations comprising:

• receiving, from a client device, a request to perform an action on an identified resource hosted at an origin server for a domain;
• transmitting the request to the origin server;
• and
• responsive to determining that the origin server is offline, performing the following:
• determining that the requested resource is available in cache,
• retrieving the requested resource from the cache,
• transmitting an offline browsing cookie to the client device for the domain such that when a subsequent request is received from the client device for a resource of the domain that includes the offline browsing cookie, a cached version of the requested resource will be served instead of querying the origin server, and
• transmitting the requested resource to the client device.