Situation: Two senior engineers on our squad were locked in an ongoing debate over whether to rewrite our frontend state management using Redux Toolkit or migrate to React Query and lightweight React Context, stalling our sprint progress.
Task: As a peer engineer, I needed to defuse interpersonal tension, refocus the team on objective requirements, and establish a clear path forward without alienating either teammate.
Action: I facilitated a 45-minute architectural review session. Rather than debating opinions, I asked both engineers to list our application's actual pain points: 80% of our state was server-side cache (server state), while only 20% was true local UI state (client state). I proposed evaluating both solutions against three agreed criteria: boilerplate overhead, caching efficiency, and developer learning curve. We created a small spike PR implementing one complex dashboard view with each approach to evaluate real developer ergonomics.
Result: The spike clearly showed that React Query eliminated over 300 lines of boilerplate caching code while handling background revalidation automatically, while Context comfortably handled the minor local UI state. Both engineers agreed with the outcome because the decision was grounded in practical codebase evidence.