Can we make an asynchronous POST request to a resource in Ruby using the RestClient library ( https://github.com/archiloque/rest-client )?
If by "asyncronous POST request" you mean "fire-and-forget" kind of request, then you can execute it on another thread.
Thread.new do
# do your request here
end
Note, however, that not all Ruby implementations use real concurrent threads. See this topic for more details.