[doublec]

I think 'Ajax' killed continuation based web servers. See Avi Bryant's thoughts in this area from back then: https://web.archive.org/web/20060610180033/http://smallthoug...

There were client side JavaScript continuation like things. Back in the mid-2000's there was Narrative JavaScript. I used it to implement threads and Alice ML style futures/promises on the client side: https://bluishcoder.co.nz/2006/06/05/more-concurrency-in-nar...