The Challenge
Their search page was the funnel. It was also 4.2s LCP, 0.34 CLS, and burning $11k/month in over-provisioned API instances.
The Solution
Migrated search to streaming React Server Components, moved hot queries behind a read-through cache, added route-level prefetch, killed three 200KB JS bundles that weren't being used.
The Results
LCP 4.2s → 1.1s. CLS 0.34 → 0.02. Sign-up conversion +31%. Infra cost -22%.
74%
LCP improvement
+31%
Sign-up conversion
-22%
Infra cost
Could your app use the same treatment?
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