Of course anyone needs to update his environment with fresh pbfs data soon or later; to minimize downtime a 2nd instance of Graphopper can be run with the “-a import” to just create a new graph-cache “offline”. Then just restart the “-a web” Graphhopper instance: however this will create an outage (in my case just a few mins, acceptable).
I was wandering if there is any better way to reduce the downtime, any hint?
I found this discussion, where it is mentioned "At least two independent processes are recommended for production (no down time). " which suggests to have two listeners up and use just one at time, correct?