I noticed there are several ways of spawning async task and sending response in Hyper

// pseudo code

// spawning async task
// 1
let runtime = tokio::runtime
let handle = runtime.handle()
let handle2 = handle.clone()
runtime.block_on(
    handle.spawn(async move {
        loop {
            handle2.spawn(async move {

            }
        }
    })
)

// 2
let runtime = tokio::runtime
let handle = runtime.handle()
let handle2 = handle
runtime.block_on(
    tokio::task::spawn(async move {
        loop {
            tokio::task::spawn(async move {

            }
        }
    })
)


// sending response
// 1
hyper::Response::new(String)

// 2
hyper::Response::new(http_body_util::Full::from(Vec<u8>))

// 3
hyper::Response::new(http_body_util::Full::from(hyper::body::Bytes::from(Vec<u8>)))

// 4
hyper::Response::new(http_body_util::Full::from(Vec<u8>).boxed())

What are the pros and cons of that methods? and which one is the highest performance?

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