George Guimarães

Design and debug Elixir persistence with Ecto. Use for schemas, changesets, queries, preloads, transactions, migrations, multi-tenancy, and data access through application contexts. Covers database query performance and connection pools.

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Write and refactor idiomatic Elixir functions, modules, and data structures. Use for pattern matching, control flow, error handling, protocols, behaviours, and deciding whether a process is needed. Use otp for process design and supervision.

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Build and debug durable background jobs with Oban and Oban Pro. Use for workers, job argument serialization, retries, scheduled or recurring jobs, uniqueness, batches, and workflows. Use otp for in-memory tasks and process supervision.

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Design and debug Elixir runtime concurrency, process state, and supervision. Use for GenServer, Supervisor, Task, Registry, ETS, process bottlenecks, and Broadway pipelines. Use oban for durable background jobs, retries, and scheduling.

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Build and debug Phoenix web interfaces and HTTP endpoints. Use for LiveView lifecycle and data loading, components, forms, routes, controllers, Plug, channels, and PubSub. Use ecto for changesets, queries, and persistence behind those interfaces.

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