Queue Handling Publish Events notify-keyspace-events yes no is publish successful? Subscribe to Events Error Program Terminates Listen to Events has a notification arrived? no yes Check Notification Is the notification linked to a sock? no yes Get name name from the sock get socks Check name list1 yes Are there elements in the list1? no Remove 1st item from list1 and create a sock Check name list2 yes no Are there elements in the list2? Remove 1st item from list2 and create a sock Is sock creation successful? yes no Log Report