Improve server performance

[hubcio]

• uuid128 simd
• less loop over Messages
• use references

[iamazy]

In iggy server, when writing a file, does the performance suffer if a new file is created for each bytes written?

the code is as follows:

#[async_trait]
impl Persister for FilePersister {
    async fn append(&self, path: &str, bytes: &[u8]) -> Result<(), Error> {
        let mut file = file::append(path).await?;
        file.write_all(bytes).await?;
        Ok(())
    }

    async fn overwrite(&self, path: &str, bytes: &[u8]) -> Result<(), Error> {
        let mut file = file::write(path).await?;
        file.write_all(bytes).await?;
        Ok(())
    }

    async fn delete(&self, path: &str) -> Result<(), Error> {
        fs::remove_file(path).await?;
        Ok(())
    }
}

[hubcio]

@iamazy I already have it addressed on branch persister_via_channels