i have 10 different termination gateways, each gateways will have more than 10000 destinations and each gateways will have different rate, for example

91 Destination ( there will be 10000 entries like 91 )

gw1            gw2   gw3           gw4    gw5 

0.001 0.007 0.003 0.002 0.003

now need to logic to load the these destination with cost and sort gateways in order of longest match of dialled number,cost, priority for the dialled destination, which will not use too much CPU and memory