I like combining this with a bash implementation of an event API (https://github.com/bashup/events). This makes it easy/idiomatic, for example, to conditionally add cleanup as you go.

Glossing over some complexity, but roughly:

    add_cleanup(){
        event on cleanup "$@"
    }
    
    trap "event emit 'cleanup'" HUP EXIT
    
    start_postgres(){
        add_cleanup stop_postgres
        # actually start pg
    }
    
    start_apache(){
        add_cleanup stop_apache
        # actually start apache
    }

I wrote a little about some other places where I've used it in https://www.t-ravis.com/post/shell/neighborly_shell_with_bas... and https://t-ravis.com/post/nix/avoid_trap_clobbering_in_nix-sh... (though I make the best use of it in my private bootstrap and backup scripts...)