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