Timeouts occur when an operation that was performed is not able to be processed fast enough due to connection issues to the appropriate Couchbase Server node, or due to high server loads. Internally, the SDK will attempt to retry an operation internally upon recoverable failures such as timeouts. However, if there is a persistent issue, a timeout will be emitted to the client. When this occurs you should push this error back upon the request initiator (the front end) to be attempted at some later date.