Error Handling in Broadway: Implementing handle_failed in Elixir

When building high-throughput data ingestion pipelines in Elixir, handling failures gracefully is critical to keeping your systems running smoothly. Many developers struggle with message drops and unhandled exceptions when processing large streams of data. This text-only course guides you through implementing robust error-handling strategies using the Broadway pipeline framework. You will learn how to isolate failures, prevent pipeline crashes, and ensure system resilience through clear, written explanations and code examples. What you'll learn: Understand the core architecture of Broadway pipelines and how messages flow through processors; Implement the handle_failed/3 callback to intercept and process failed messages gracefully; Configure custom retry mechanisms and backoff strategies for transient errors; Manage message acknowledgments to ensure reliable delivery and avoid data loss; Apply Telemetry metrics to monitor and log pipeline failures in production. The course begins with foundational concepts of supervision trees and fault tolerance in Elixir before diving into the mechanics of Broadway's error lifecycle. You will progress from basic failure handling to advanced patterns like dead-letter queues and custom retries. This course is designed for Elixir developers who want to build reliable data processing systems. A basic understanding of Elixir syntax is helpful, but no prior experience with Broadway is required. Read through our structured guides and elevate the reliability of your Elixir applications today.