Explaining Cloudflare's ABR Analytics

What this post added

Introduced Adaptive Bit Rate (ABR) analytics for Cloudflare's data infrastructure. ABR allows analytics queries to be calculated at resolutions matching the query's needs, optimizing response times and resource usage by storing data at multiple resolutions. This technique improves resilience and scalability by adapting to system load and tail latency, ensuring consistent dashboard performance. The post also details the application of ABR to aggregations like topK and count-distinct, using sampling techniques for efficient estimation.