I have a multiplayer game that, similar to chess, will have a win/tie/lose outcome in a 1v1 setting.
It seems that I have to load all games & players into memory in order to calculate the new ratings of players in a match.
From my understanding, the ratings/deviation are supposed to change the longer a player hasn't played... From my understanding the algorithm 'auto' changes the deviation for players who haven't played.
Is there a kind of O(1) way to apply a glicko rating to the two players of a game and maybe daily run some type of 'decay' on everyone's ratings confidence (for those who haven't played) in a mathematically accurate way?
I'm leaning on sticking with Elo but I know many games have scaled Glicko-2, so I want to try to find a way to do that.