rust-server

Apply #[spacetimedb::table(accessor = name, public)] to a pub struct with typed fields. Use #[primary_key], #[auto_inc], #[unique], and #[index(btree)] on columns, and access the table through ctx.db using the snake_case accessor name.

Annotate a function taking &ReducerContext with #[spacetimedb::reducer]. Reducers can return Result<(), String> for validation failures, and you should use try_insert() with ? instead of insert() when returning Result to avoid panics on constraint violations.

The Table trait must be imported from the spacetimedb crate. Without use spacetimedb::Table, methods like insert(), iter(), and find() on table handles produce a 'no method named insert found' compile error.

Yes, declare a table with scheduled(reducer_fn) containing scheduled_id and scheduled_at columns. Insert rows with ScheduleAt::Time for one-time execution or ScheduleAt::Interval for repeating execution, and the row is auto-deleted after the reducer runs.

Yes, procedures using &mut ProcedureContext can call ctx.http with convenience methods like get or build custom requests via Request::builder and ctx.http.send. Responses are not cloneable, so inspect status and headers before consuming the body.