4.11.3 Reading the Graph Using the In-Memory Graph Server (PGX) or a Java Application
After creating the graph configuration, you can load the graph into the in-memory graph server (PGX) using the regular APIs.
opg4j> G = session.readGraphWithProperties("graphs/my-config.pg.json")
After the graph is loaded, a background task is started automatically, and it periodically checks the data source for updates.
Parent topic: Using Automatic Delta Refresh to Handle Database Changes