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Most APIs get error handling wrong Here’s how to do it right: - Use 4xx for client errors, 5xx for server errors - Return structured JSON: code, message, error, details, timestamp - Handle input validation, auth issues, not found, rate limits Read more newsletter.masteringbackend.com/archive?tags=A…

Just getting started with Java? Here's a simple step-by-step carousel showing how to write and run your first Java program — Hello, World! Perfect for beginners who want to get hands-on fast. #Java #masteringbackend #100DaysOfCode #JavaDeveloper #LearnJava

Rust enums are a great tool for modeling state, but there’s a catch: you can’t iterate through them out of the box. That’s where the strum crate shines, providing derive macros like EnumIter, Display, EnumString, and AsRefStr to unlock powerful functionality for enums.

Master Rust from scratch. A complete roadmap to learn Rust in 3 stages: - Fundamentals: Ownership, lifetimes, enums, generics - Intermediate: Traits, smart pointers, testing, concurrency - Advanced: Unsafe Rust, embedded, game dev, crates #RustLang #SystemsProgramming #Tech

Level up your backend skills with expert tips, tutorials, and tools delivered weekly. Subscribe to the Mastering Backend newsletter: newsletter.masteringbackend.com #BackendDev #WebDevelopment #APIs #Microservices

Most Rust devs know 'as' for type casting, but that’s just the start. ✅ Need to convert between primitives like 'u8' to 'u32'? Use 'as'. ✅ Got two modules exporting the same function name? Rename imports with 'as'

Over 10,000 engineers are leveling up their backend skills with Backend Weekly. Get simplified explanations, expert tips, and exclusive resources delivered to your inbox. Join the community → newsletter.masteringbackend.co #BackendDev #Newsletter #masteringbackend #APIs

Are you actually using that variable? Rust wants to know. In Rust, the '_' and '_var' bindings are not the same; one discards entirely, the other silently keeps the value. This short, practical guide covers: ✅When Rust issues "unused variable" warnings and when it doesn’t

Learn all the essential Design Patterns in one roadmap: Creational: Factory, Singleton, Builder Structural: Adapter, Decorator, Proxy Behavioral: Strategy, Observer, Command Perfect for writing maintainable and scalable code. #DesignPatterns #SoftwareEngineering #OOP