http.responseText response seems outdated from cache

Question

I host a local server on my pc with Plumber from R. Next I call the server from Excel VBA. If I use Debug.Print getHTTP(myurl) I do receive an up-to-date response. If I use Debug.Print (http.responseText) I do receive an outdated response. I assume from cache.

If I call myurl with browser Chrome the response is up-to-date.

Please see code below.

Any idea what can be the cause of the outdated response from Debug.Print (http.responseText) ?

Thanks a lot!

    Public Function getHTTP(ByVal url As String) As String
      With CreateObject("MSXML2.ServerXMLHTTP.6.0")
        .Open "GET", url, False: .send
        getHTTP = StrConv(.responseBody, vbUnicode)
      End With
    End Function
    
    
    Sub APItest()
    
    Dim myurl As String
    Dim JSON As Object
    Dim http As Object
    
    myurl = "http://127.0.0.1:1234/my_local_api_server"
    
    Debug.Print getHTTP(myurl) 'this line gives actual output 
    
    Set http = CreateObject("MSXML2.XMLHTTP")
    
    http.Open "GET", myurl, False
    
    http.send
    
    Debug.Print (http.responseText) 'this line gives outdated output from cache

    End Sub

Answer 1

See answer below:

How to make Microsoft XmlHttpRequest honor cache control directive

The function in my question getHTTP uses MSXML2.ServerXMLHTTP.6.0 which does not has the cashing issue.