This section contains explanations of some library mechanics which may be useful to know.
App command sync¶
If you’re using disnake.ext.commands – Bot commands framework for application commands (slash commands, context menus) you should understand how your commands show up in Discord. By default, the library registers / updates all commands automatically. Based on the application commands defined in your code the library automatically determines which commands should be registered, edited or deleted, but there’re some edge cases you should keep in mind.
Unlike global commands, per-guild application commands are synced in a lazy fashion. This is due to Discord ratelimits, as checking all guilds for application commands is infeasible past two or three guilds. This can lead to situations where a command no longer exists in the code but still exists in a server.
To rectify this, just run the command. It will automatically be deleted.
Command Sync with Multiple Clusters¶
If your bot requires shard distribution across several clusters, you should disable command sync on all clusters except one.
This will prevent conflicts and race conditions. Discord API doesn’t provide users with events related to application command updates,
so it’s impossible to keep the cache of multiple machines synced. Having only 1 cluster with
sync_commands set to
True is enough
because global registration of application commands doesn’t depend on sharding.