Can I use this for global singleton management?

Yes, it includes guidance and code patterns for using std::sync::OnceLock and LazyLock to manage thread-safe, deferred initialization of global application state.

How does this skill handle resource leaks in Rust?

The skill provides implementation templates for the RAII pattern and the Drop trait, ensuring that resources like file handles and network sockets are automatically released as soon as they go out of scope.

Does it support both sync and async connection pools?

Absolutely. It covers patterns for synchronous pooling using r2d2 and asynchronous pooling using libraries like deadpool, ensuring compatibility with different runtime environments.

How does the skill help with cleanup on error?

It guides the user to implement Guard patterns where cleanup logic is encapsulated in a wrapper's Drop implementation, ensuring cleanup occurs even if a function returns an Error early.

Rust Resource Lifecycle Manager

Name: Rust Resource Lifecycle Manager
Author: actionbook

byactionbook

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596

Developer Tools

Manages the creation, usage, and cleanup of system resources in Rust using RAII and lazy initialization patterns.

About

This skill provides Claude with expert-level guidance on architecting resource lifecycles within Rust applications, focusing on efficiency and safety. It enables the implementation of core patterns such as Resource Acquisition Is Initialization (RAII) via the Drop trait, thread-safe lazy initialization using OnceLock and LazyLock, and robust connection pooling. By applying these patterns, developers can ensure that files, database connections, and memory allocations are handled with deterministic cleanup, preventing leaks and race conditions while optimizing application performance through deferred creation and resource reuse.

Key Features

Configures thread-safe lazy initialization with OnceLock and LazyLock
Designs robust connection pools using r2d2 and deadpool crates
Provides scoped access patterns using MutexGuards and custom guards
Implements RAII and the Drop trait for automated resource cleanup
Analyzes resource costs to determine optimal allocation (pool vs. per-use)
596 GitHub stars

Use Cases

Designing a database connection pool with automatic cleanup on error
Implementing a global configuration singleton that initializes on first access
Managing temporary file lifecycles to ensure deletion after a scope finishes

About

Key Features

Configures thread-safe lazy initialization with OnceLock and LazyLock
Designs robust connection pools using r2d2 and deadpool crates
Provides scoped access patterns using MutexGuards and custom guards
Implements RAII and the Drop trait for automated resource cleanup
Analyzes resource costs to determine optimal allocation (pool vs. per-use)
596 GitHub stars

Use Cases

Designing a database connection pool with automatic cleanup on error
Implementing a global configuration singleton that initializes on first access
Managing temporary file lifecycles to ensure deletion after a scope finishes