Worldwide data

Abenezer · April 17, 2025, 7:36am

How does graphhopper load worldwide routing network. i want to load worldwide network and how do i do that. do i do that in a single machine. or partition the data. if i partition the data how does the routing network know to go from point a to point b in different partitioned data?

loalf · April 17, 2025, 8:05am

There are some instructions in the GitHub repo on how to deploy it at world scale here

github.com/graphhopper/graphhopper

docs/core/deploy.md

master

# Deploy Guide

This guide is written for everyone interested in deploying graphhopper on a server.

## Basics

See the [installation section](../../README.md#installation) on how to start the server.

Then you can embed these commands in a shell script and use this from e.g. [Docker](../../README.md#docker) or systemd.

For production usage you have a web service included where you can use [this configuration](https://raw.githubusercontent.com/graphhopper/graphhopper/master/config-example.yml)
Increase the -Xmx/-Xms parameters of the command accordingly.

You can reduce the memory requirements for the import step when you run the `import` command explicitly before the `server` command:

```
java [options] -jar *.jar import config.yml
java [options] -jar *.jar server config.yml # calls the import command implicitly, if not done before
```

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They even mention machine specs required. From what I read, I don’t think partition is an option but I’m relatively new to this

omduggineni · April 20, 2025, 8:14pm

You should be able to simply load planet.osm.pbf into the graphhopper configuration (see last reply) in order to allow it to process planet-wide requests. You do however need a very large amount of RAM (about 128-196 gigabytes) to do this properly.

(Partitioning could be done to decrease RAM usage if you wanted to do it, but you’d have to partition by, e.g., continent or landmass, because you wouldn’t be able to handle routes that go between partitions. https://download.geofabrik.de/ has “extracts” of parts of planet.osm.pbf that you can process if you wanted to do that. You’re probably better off loading planet.osm.pbf directly.)