[Tanzu Talks] Strangling the Monolith With A Data-Driven Approach: A Case Study

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Presented by

David Julia, Director, VMware Pivotal Labs Sydney & Amjad Sidqi, Associate Director, VMware Pivotal Labs Sydney

About this talk

This is a real life story of how one team successfully rewrote a legacy health insurance system, with thousands of unknown business rules so complex that no one could make heads or tails of them, where a tiny mistake could put millions of dollars at risk. Through our analysis of the scenario, we’ll share how you can: • Build statistically significant confidence in your system with data-driven testing • Take a Lean approach to legacy rewrites - strangle the monolith safely • Validate your system’s accuracy when you don’t know the legacy business rules • Get business and QA buy-in to leverage Continuous Delivery in a legacy environment • Show progress on your legacy rewrite so that your project doesn't get cancelled Finally, we’ll walk through some guidelines that you can immediately apply to determine what to do with your own applications. You’ll walk away armed with the knowledge of when to rewrite, buy something off the shelf, do nothing, containerise or “strangle” the application.
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