Matchmaking architecture for online game platform

A system comprising:

• at least one processor coupled to a nontransitory computer readable medium having stored thereon software instructions that, when executed by the at least one processor, cause the at least one processor to perform operations including:
• receiving game data that includes game events that indicate game state changes in a plurality of active game instances currently executing on a game platform;
• for each of the game events:
• obtaining the game event from the game data and determining whether the game event is an indexing event including one or more of:
• creation of a new game instance, update of one of the plurality of active game instances, or closing of one of the plurality of active game instances;
• in response to determining that the game event is an indexing event, determining whether a particular game instance associated with the game event is eligible to be joined by one or more players;
• in response to determining that the particular game instance associated with the game event is eligible to be joined by the one or more players, determining one or more index assignments for the particular game instance that target one or more particular indexes associated with one or more game instance characteristics of the particular game instance, wherein the one or more particular indexes are a subset of a plurality of game instance indexes that store references to the active game instances;
• and
• writing one or more game state updates to the one or more particular indexes in a data structure based on the one or more index assignments,
• wherein the one or more particular indexes are scanned to find eligible game instances based on the one or more game instance characteristics associated with the one or more particular indexes matching one or more user characteristics of a requesting user of the game platform requesting to join a game instance.

A computer-implemented method comprising:

• receiving, by at least one processor, an indication that original game instances of a game executing on a game platform are closing to enable an update of the game, wherein player devices of one or more players connected to the original game instances are to be disconnected from the original game instances for the update of the game;
• storing, by the at least one processor, one or more player reservations for the one or more players in a stored reservation map that maps the one or more player reservations to one or more player slots of the original game instances;
• updating, by the at least one processor, the game with one or more code changes to the game and executing one or more updated game instances for the game;
• after the update of the game and disconnection of the player devices from the original game instances, receiving, by the at least one processor, a request from a player device of a requesting player to connect to the game;
• in response to receiving the request, searching, by the at least one processor, the reservation map for an associated player reservation corresponding to the requesting player for the game;
• and
• in response to finding the associated player reservation in the reservation map, connecting, by the at least one processor, a player device of the requesting player to one of the one or more updated game instances that corresponds to the original game instance associated with the associated player reservation.