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Languages & runtimes · #elixir
This post explains how Elixir’s GenStage keeps streaming pipelines bounded with backpressure, walks through a file‑processing example, and lists trade‑offs and verification steps.
Use Ecto.Multi to compose multiple database operations into a single atomic transaction. Learn how to build a pipeline, execute it, and avoid common pitfalls with a clear, step‑by‑step example.
Ecto.Multi is a data structure that groups multiple database operations into a single atomic transaction, returning {:ok, changes} on success or {:error, failed_name, failed_value, changes_so_far} on failure. Each step receives results from previous steps, enabling clean dependency chaining.
Learn how to identify and resolve Ecto.Multi transaction failures by inspecting the error tuple, diagnosing validation, constraint, connection, or exception causes, and applying targeted fixes.
Phoenix LiveView lets you build search-as-you-type and live validation in pure Elixir. A worked example, plus an honest look at memory, reconnects, and when a SPA still wins.
Understand how to implement stateful processes using GenServer, balancing synchronous calls and asynchronous casts to build resilient OTP applications.
Learn how Phoenix LiveView eliminates the need for complex client-side state management by keeping UI logic on the server and pushing minimal HTML diffs via WebSockets.
Learn how to compose atomic database operations with Ecto.Multi, see a worked example of user‑profile creation, and understand its limits.
Stop blocking your Elixir processes. Learn when to use GenServer.call versus GenServer.cast to balance system responsiveness with state consistency.
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phoenix