Further reading

• Fielding, Roy Thomas. Architectural Styles and the Design of Network-based Software Architectures. Doctoral dissertation, University of California, Irvine, 2000
• REST: https://www.ics.uci.edu/~fielding/pubs/dissertation/rest_arch_style.htm
• SOAP: https://www.w3.org/TR/soap/

• A simple SOAP client: https://www.ibm.com/developerworks/xml/library/x-soapcl/index.html

• RESTful API HTTP Status Codes: https://restfulapi.net/http-status-codes/
• 304 Not Modified: What It Is and How to Fix It: https://airbrake.io/blog/http-errors/304-not-modified
• ETag: https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/ETag
• Types of Numeric Data: https://www.stat.berkeley.edu/~spector/extension/python/notes/node22.html