Optimized techniques for monitoring massive geographic location-based triggers

A non-transitory computer-readable medium storing computer-executable instructions that, when executed by one or more processors of a user device, cause the one or more processors to:

• store a set of geofences;
• determine a current location of a mobile device;
• generate a first bounding area around the current location, wherein the first bounding area includes no more than a specified number of geofences of the set of geofences or has a radius having a minimum value;
• monitor whether the mobile device exits the first bounding area;
• determine that the mobile device exits the first bounding area;
• and
• responsive to exiting the first bounding area, generate a second bounding area, and wherein the second bounding area includes no more than the specified number of geofences of the set of geofences.

A user device comprising:

• a memory configured to store computer-executable instructions;
• and
• one or more processors configured to:
• store a set of geofences;
• determine a current location of a mobile device;
• generate a first bounding area around the current location, wherein the first bounding area includes no more than a specified number of geofences of the set of geofences or has a radius having a minimum value;
• monitor whether the mobile device exits the first bounding area;
• determine that the mobile device exits the first bounding area;
• and
• responsive to exiting the first bounding area, generate a second bounding area, and wherein the second bounding area includes no more than the specified number of geofences of the set of geofences.