Optimize app health with Firebase Performance Monitoring and Crashlytics
summary
New Crashlytics links to Google Play let teams filter issues by release track and Surface ANRs inside Crashlytics with blocking-thread stacks and breadcrumbs; ANR reporting highlights when UI thread waits for resources. Signals tag fresh or regressed crashes to prioritize. Performance Monitoring recommends watching the 90th percentile (example: image catalog API at 2.72s), adds threshold alerts (e.g. success rate drops below 99%), and shows a real rollout where a US-only cache raised 90th to 3.4s and success rate under 80% in Japan/UK until regional caches fix it.
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