Method and system for servicing requests in a dynamic cluster

A system comprising:

• a first replica of a first plurality of replicas, the first replica comprising:
• a first processor;
• and
• a first set of instructions that when executed by the first processor causes the first processor to:
• receive a first request comprising a first membership label from a client,
• wherein the first request comprises an object key and the object key comprises an obsolete object reference,
• wherein the client stores the first membership label and a first cluster list corresponding to the first membership label, and wherein the first cluster list comprises identifiers of the first plurality of replicas,
• identify a reference factory corresponding to the object key;
• obtain an object reference template from the reference factory;
• update the obsolete object reference using the object reference template to create an updated object reference;
• determine whether the first membership label is obsolete;
• and
• send, to the client, a second membership label and a second cluster list corresponding to the second membership label when the first membership label is obsolete,
• wherein the second cluster list comprises identifiers of a second plurality of replicas,
• wherein the sending the second membership label and the second cluster list comprises:
• intercepting, from a servant, a first response comprising results to the first request to the client;
• adding the updated object reference to the first response, wherein the updated object reference comprises the second membership label and the second cluster list;
• and
• sending the first response to the client, wherein the first response sent to the client comprises the results and the updated object reference, and
• wherein the client updates the first cluster list with the second cluster list;
• and
• a second replica of the second plurality of replicas, the second replica comprising:
• a second processor;
• and
• a second set of instructions that when executed by the second processor causes the second processor to:
• receive a second request comprising the second membership label from the client;
• and
• send a second response based on the second request to the client.

A computer readable medium comprising computer readable program code embodied therein for causing a replica of a first plurality of replicas in a dynamic cluster to:

• receive a request comprising a first membership label from a client,
• wherein the request comprises an object key and the object key comprises an obsolete object reference,
• wherein the client stores the first membership label and a first cluster list corresponding to the first membership label, and
• wherein the first cluster list comprises identifiers of the first plurality of replicas;
• identify a reference factory corresponding to the object key;
• obtain an object reference template from the reference factory;
• update the obsolete object reference using the object reference template to create an updated object reference;
• determine whether the first membership label is obsolete;
• and
• send, to the client, a second membership label and a second cluster list corresponding to the second membership label when the first membership label is obsolete,
• wherein the second cluster list comprises identifiers of a second plurality of replicas in the dynamic cluster,
• wherein the sending the second membership label and the second cluster list comprises:
• intercepting, from a servant, a response comprising results to the first request to the client;
• adding the updated object reference to the response, wherein the updated object reference comprises the second membership label and the second cluster list;
• and
• sending the response to the client, wherein the first response sent to the client comprises the results and the updated object reference, and
• wherein the client updates the first cluster list with the second cluster list.