Pre-Fetching Map Data Based on a Tile Budget

摘要

To select map data for storage in a memory of a computing device, geographic locations for which a user of a client device is expected to subsequently request digital maps are determined. Prior to receiving a user request for map data related to the geographic locations, pre-fetch map data for generating digital maps including the plurality of geographic locations is determined. Further, a memory budget for storing map data in a memory of the client device is determined along with a priority for retrieving map data from a remote database to the memory of the client device. At least a portion of the determined pre-fetch map data is retrieved from the remote database to the memory of the client device in accordance with the determined memory budget and the determined priority.

主权项

1. A method for selecting map data for storage in a memory of a computing device, the method comprising:
determining, by one or more processors, a plurality of geographic locations for which a user of a client device is expected to subsequently request digital maps; prior to receiving a user request for map data related to the plurality of geographic locations, determining, by one or more processors, pre-fetch map data for generating digital maps including the plurality of geographic locations; determining, by one or more processors, a memory budget for storing map data in a memory of the client device; determining, by one or more processors, a priority for retrieving map data from a remote database to the memory of the client device; and causing, by one or more processors, retrieval of at least a portion of the determined pre-fetch map data from the remote database to the memory of the client device in accordance with the determined memory budget and the determined priority.