Exposing the design pattern at the heart of Rack Middleware

Rack Middleware is based on a powerful and flexible ‘nested handlers’ architecture that has broad application in many kinds of data processing pipeline, not just web apps. We’ve extracted it as a design pattern and identified some non-web use cases, but can you help us name it?One of the projects the software engineers at Simply Business have been working on recently is a large data import of our customers’ insurance policy records. We’re decommissioning a legacy system originally written in Java and Oracle, so it was critical that we migrate our customers’ insurance policies from there onto our new Rails-based system.