Previously we had db and application logic mixed on the db level. We now move the config option KeepFailedPaymentAttempts to the ChannelRouter level and move it out of the db level.
routing
The routing package implements authentication+validation of channel announcements, pruning of the channel graph, path finding within the network, sending outgoing payments into the network and synchronizing new peers to our channel graph state.
Installation and Updating
$ go get -u github.com/lightningnetwork/lnd/routing