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storage-backends

FastMCP uses pluggable storage backends for caching responses and managing OAuth state. By default, all storage is in-memory, which is perfect for development but doesn't persist across restarts. FastMCP includes support for multiple…

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What it does and how to use it

A skill that teaches Claude Code to do development tasks well. It is packaged knowledge the model uses whenever it is relevant.

  1. Install the skill (command above).
  2. In Claude Code, describe what you need - the skill turns on by itself when the context fits.
  3. No commands to memorize: you talk in plain language and the skill does the rest.

Install (Claude Code)

mkdir -p .claude/skills/storage-backends && curl -fsSL https://doutorai.pt/data/lib/skills__storage-backends.md -o .claude/skills/storage-backends/SKILL.md

Paste this command into the terminal, in your project folder, and the component installs automatically.

Content

# Storage Backends

> Configure persistent and distributed storage for caching and OAuth state management

FastMCP uses pluggable storage backends for caching responses and managing OAuth state. By default, all storage is in-memory, which is perfect for development but doesn't persist across restarts. FastMCP includes support for multiple storage backends, and you can easily extend it with custom implementations.

> **Tip:** The storage layer is powered by **[py-key-value-aio](https://github.com/strawgate/py-key-value)**, an async key-value library maintained by a core FastMCP maintainer. This

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