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Languages & runtimes · #elixir
Elixir's `with` flattens chained pattern matches, but silent short-circuiting can hide partial successes. Learn when to use it over nested `case` and how to test both paths.
Phoenix LiveView lets you build interactive search and pagination in Elixir without a JavaScript SPA. Learn the lifecycle, a worked example, and the memory trade-offs.
Learn how to manage process state in Elixir using GenServer, including the critical technical differences between synchronous calls and asynchronous casts to avoid timeouts and mailbox overflows.
Learn how to add and remove WebSocket connection processes at runtime with Elixir’s dynamic supervision, including a runnable example and key trade‑offs.
Phoenix LiveView keeps UI state on the server and pushes DOM diffs over WebSockets. Learn how the mount-to-assigns loop works, where memory and latency limits appear, and how to verify the behavior in your app.
Learn how to diagnose and fix common Ecto pagination issues caused by misuse of limit/offset, version differences, and changeset validation.
Frequent `:shutdown` messages and CPU spikes signal rapid child restarts; this guide shows how to diagnose and fix Supervisor restart strategy issues in Elixir.
Learn how to use Phoenix Channels and the Presence module to manage real‑time user state across distributed clusters without relying on a central database.
Use Ecto.Multi when one request must create or update several rows and fail as a single unit. It compiles named steps into one database transaction and returns the failed step name.
ecto
phoenix