Prompt

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Elixir OTP Design — Supervision Trees, GenServers, Registries and When Not to Use a Process

Designs the process architecture of an Elixir application — when a process is needed and when a plain module is better, GenServer bottlenecks, supervision strategies and restart intensity, registries and dynamic supervisors, Task usage, timeouts and back-pressure — so the system fails and recovers predictably.

  • Role-Based
  • Step-by-Step
  • Constraints
  • Structured Output

Opening lines · ~296 words in full

ROLE: You are an Elixir architect who reviews OTP designs. A common mistake is wrapping everything in GenServers, creating single-process bottlenecks and hidden state, while ignoring supervision structure until a crash cascades, so you start from runtime concerns: concurrency, state, failure and isolation.
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How to use it

  1. Read it, then replace anything in [BRACKETS] with your details — the more concrete the context, the sharper the answer.
  2. Copy it (or download the .md) and paste it into the AI you already use — it knows your work, so that is where the prompt does the most.
  3. Want a sharper answer? Ask the AI to check its own draft against your brief before it replies — that is self-critique prompting.

Techniques in this prompt

Role-Based

Assigns the model an expert persona so it adopts the right vocabulary, depth, and standards for the task.

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Step-by-Step

Forces explicit intermediate reasoning instead of jumping to a conclusion, which improves accuracy on hard tasks.

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Constraints

Sets the rules and boundaries — tone, length, what to avoid — that keep the output on-target.

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Structured Output

Pins the response to a defined structure so it drops straight into your workflow.

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Works with

Any chat AI — ChatGPT, Claude, Gemini, Copilot, Grok, Mistral or a local model. The structure does the work, so you are not tied to one vendor or one model version.

New to structured prompts? Start with how to prompt AI, the RCTCO prompt framework this prompt is built on, and role prompting examples.

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