Learn how to enhance Kafka consumer performance and reliability in this technical conference talk from InfoQ Dev Summit Boston. Discover OneSignal's journey in transforming their high-throughput HTTP endpoints through asynchronous system implementation using Rust. Explore detailed metrics comparing synchronous versus asynchronous performance, innovative sharding strategies for maximizing concurrency, and techniques for maintaining consistency in Kafka consumers. Gain practical insights into building robust data processing pipelines that optimize latency, reduce contention, and ensure maximum uptime through real-world implementation examples and performance optimization strategies.