function example_wpf_wpe_issue() {

    $args = array(
        'numberposts' => - 1,
        'post_type'   => 'shop_order',
        'post_status' => array( 'wc-processing', 'wc-completed' ),
        'fields'      => 'ids',
        'meta_query'  => array(
            array(
                'key'     => 'wpf_complete',
                'compare' => 'NOT EXISTS',
            ),
        ),
    );

    $orders = get_posts( $args );

    // NOTE: the results of this query are being cached

    foreach ( $orders as $order_id ) {

        $complete = get_post_meta( $order_id, 'wpf_complete', true );

        // NOTE: the result of this call to get_post_meta is being cached

        if ( ! empty( $complete ) ) {
            return;
        }

        //
        // API CALLS TO DRIP ARE SENT HERE
        //

        update_post_meta( $order_id, 'wpf_complete', true );

        $order = wc_get_order( $order_id );

        $order->add_order_note( 'WP Fusion order actions completed.' );

    }

}