Consistent route announcements among redundant controllers in global network access point

A method for announcing route information controlling routing of data packets within an access point, the method comprising, at a first route controller among a plurality of route controllers within the access point:

• conducting a read of a route data record from a strongly consistent data store, the route data record corresponding to a record designated for storage of the routing information and for a designation of a lead route controller within the access point;
• determining that the route data record is invalid and does not designate the first route controller as the lead route controller;
• generate new routing information based at least in part on health check data regarding a health of a plurality of packet processors within the access point, the new routing information having a priority higher than past routing information within the route data record;
• conditionally updating the route data record in the strongly consistent data store only if the route data record designates the other route controller as the lead route controller, wherein the update includes the new routing information and designates the first route controller as the lead route controller;
• conducting an additional read of the route data record from the strongly consistent data store;
• determining that the route data record obtained in response to the additional read includes the new routing information and designates the first route controller as the lead route controller;
• and
• transmitting the new routing information to a router device of the access point.

Non-transitory computer-readable media comprising:

• first instructions executable by a computing system implementing an individual route controller among a plurality of route controllers in an access point system, wherein execution of the first instructions causes the individual route controller to:
• generate routing information based at least in part on health check data regarding a health of a plurality of packet processors within the access point, the routing information designating how to route data packets obtained on a network to the plurality of packet processors and having a specified priority value;
• and
• conditionally update a route data record in a strongly consistent data store with the routing information an indication of the individual route controller as a lead route controller only if the route data record designates a particular route controller as the lead route controller;
• and
• second instructions executable by the computing system implementing the individual route controller, wherein execution of the second instructions causes the individual route controller to:
• read information from the route data record on the strongly consistent data store;
• if the read information identifies the individual route controller as the lead route controller:
• transmit routing information read from the route data record to a router device on the access point system;
• and
• execute the first instructions with the individual route controller as the particular route controller and with a priority value obtained from the read information as the specified priority value;
• and
• if the read information identifies another route controller as the lead route controller:
• if the read information is valid, transmit routing information read from the route data record to a router device on the access point system, and
• if the read information is invalid, execute the first instructions with the other route controller as the particular route controller and with a new priority value as the specified priority value, the new priority value indicating a higher priority than the priority value obtained from the read information.