Ecto Upserts in Elixir: Efficient Database Inserts and Updates

Managing database conflicts manually can lead to race conditions, complex code, and unnecessary database roundtrips. Ecto's upsert feature provides a clean, database-level solution to insert new records or update existing ones in a single, atomic operation. In this written course, you will transition from writing manual database checks to implementing robust, high-performance upsert strategies. You will read through clear explanations and practical code examples to safely handle database constraints and concurrent writes in your Elixir applications. What you'll learn: Understand the core concepts of upserts and how they solve concurrency issues; Configure database constraints and unique indexes required for safe upsert operations; Apply Ecto.Repo.insert with the conflict options; Manage complex update behaviors using custom Ecto queries during conflicts; Practice designing schemas that support efficient, modern data insertion patterns; Troubleshoot common upsert errors and performance bottlenecks. The course begins with foundational database concepts and terminology before moving step-by-step through basic upsert syntax, advanced conflict resolution strategies, and modern Ecto practices. This course is designed for beginner Elixir developers who want to deepen their database management skills, and no prior experience with complex Ecto queries is required. Start reading today to build faster, more resilient Elixir applications.