1. A method for managing data flows in a network comprising a plurality of nodes, comprising: generating one or more network load representatives (NLRs) of an expected network load of the network, wherein the expected network load of the network is indicative of flow demands for all the data flows in the network; determining a path selection configuration for all the data flows for each of the NLRs and storing the path selection configuration identified for each corresponding NLR in association with the corresponding NLR; and mapping a prevailing network load of the network to one of the NLRs, wherein the prevailing network load of the network is indicative of prevailing flow demands for all the data flows in the network.