Rust mmap Memory-Mapped I/O: Why Reading Files Can Be as Fast as Accessing Memory

A plain-English guide to Rust mmap memory-mapped I/O. Why is it 5-10x faster than traditional Rust file reading? How does zero-copy achieve Rust performance optimization? This memmap2 hands-on tutorial uses real-life analogies to help you understand this seemingly mysterious low-level technology.

December 15, 2025 · 6 min · 1229 words · Rexai Programming
Rust Macros 2.0 starter guide cover illustration

Rust Macros 2.0 Starter Guide: Build Code Like Lego

A panoramic Rust Macros 2.0 guide: unify macro namespaces, master the TokenStream pipeline and macro hygiene, and migrate from macro 1.0 to macro 2.0 metaprogramming with practical examples.

October 30, 2025 · 12 min · 2465 words · February 12, 2025 · Rexai Programming
Complete implementation and best practices for Rust Axum graceful shutdown

Rust Axum Graceful Shutdown, The Ultimate Guide: Fix the pitfall 99% of engineers hit

Master graceful shutdown for Rust Axum services: listen for SIGINT/SIGTERM, refuse new connections with with_graceful_shutdown, stop background tasks via CancellationToken, set timeouts, and integrate with Docker/Kubernetes termination — protect data integrity and user experience.

August 17, 2025 · 3 min · 449 words · Rexai Programming

Rust unsafe isn’t a toy — it’s a blood oath: 6 YOLO mistakes that will blow up your code

Don’t treat unsafe like a get-out-of-jail-free card. With practical examples, this article dissects 6 common unsafe pitfalls: silencing the compiler with duct tape, dereferencing random raw pointers, violating borrow rules inside unsafe, reinventing wheels, abusing unsafe impl, and skipping Safety comments — helping you build the right risk mindset and usage patterns.

August 13, 2025 · 6 min · 1278 words · Rexai Programming
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