https://blog.maceage.com/tags/testing/Recent content in Testing on Maceage's BlogHugoen-au© Graham MaceThu, 08 Oct 2026 00:00:00 +0000https://blog.maceage.com/posts/2026/the-scientist-pattern/Thu, 08 Oct 2026 00:00:00 +0000https://blog.maceage.com/posts/2026/the-scientist-pattern/<p><small><i>(Originally drafted in October 2023 during my tenure at Xero. Republished here in October 2026 with updated context and removed proprietary references)</i></small></p> <blockquote> <p>&ldquo;In short, a proxy is a wrapper or agent object that is being called by the client to access the real serving object behind the scenes.&rdquo; — <a href="https://en.wikipedia.org/wiki/Proxy_pattern" target="_blank">Proxy pattern, Wikipedia</a></p> </blockquote> <p>Consider a scenario familiar to anyone maintaining a large monolithic API: you&rsquo;re refactoring endpoints towards a new architecture, and it&rsquo;s going well – until it isn&rsquo;t. An API contract gets inadvertently changed, data gets lost, and customers notice before you do.</p>