Latest from Ultimo
Tutorials, release notes, architecture deep-dives, and comparisons for the modern Rust web framework.
Ultimo is AI-Native: Building Rust Backends with Coding Agents
Most software is now written with AI coding agents. Here's how Ultimo is designed to be the easiest Rust web framework for them to build with — typed codegen, scaffolds that build, and docs made to be read by machines.
Ultimo v0.6.0: What a Security Review Found (and a SemVer Blind Spot We Didn't Expect)
Ultimo v0.6.0 fixes a session logout bug, two memory-exhaustion DoS vectors, an error-message info leak, adds a WebSocket Origin allow-list against Cross-Site WebSocket Hijacking, patches a JWT CVE and a SQLx RUSTSEC advisory — and exposes a real gap in cargo-semver-checks along the way.
Build a Real-Time Chat Application with Rust WebSockets and Ultimo
A complete tutorial for building a production-quality real-time chat server in Rust using Ultimo's WebSocket pub/sub system — from connection handling through rooms, presence, and deployment.
Why Rust and Ultimo Are Ideal for Latency-Sensitive Backends: Finance, Bots, and Realtime Services
An in-depth look at building latency-sensitive backend systems — trading bots, financial APIs, real-time notification pipelines — in Rust with Ultimo. Covers runtime model, tail latency, type safety guarantees, and architecture patterns.
Rust vs Node.js for Backend APIs in 2026: An Honest Comparison
A detailed comparison of Rust and Node.js for backend API development in 2026 — covering performance characteristics, developer experience, type safety, deployment, ecosystem maturity, and when to choose each.
JSON-RPC vs REST: Why Type-Safe APIs Win in Complex Applications
A technical comparison of JSON-RPC and REST API styles — when each shines, where REST breaks down in complex applications, and how Ultimo's hybrid approach gives you both with automatic TypeScript client generation.
Session Authentication in Rust: Cookies, Sessions, and CSRF Protection with Ultimo
A practical guide to implementing session-based authentication in Rust — covering cookie configuration, session storage, CSRF protection, login/logout flows, and security best practices using Ultimo's built-in session middleware.
Build Your First API with Ultimo in 10 Minutes
A step-by-step tutorial to create a REST API with Ultimo, add JSON-RPC endpoints, and generate a fully typed TypeScript client — from cargo init to working frontend.
Introducing Ultimo v0.5.0: Derive Your TypeScript Types from Rust
Ultimo v0.5.0 ships automatic TypeScript type derivation via #[derive(TS)], static file serving, response compression, and breaking RPC improvements that eliminate manual type maintenance forever.
Ultimo vs Axum: A Practical Comparison for 2026
An honest feature-by-feature comparison of Ultimo and Axum — covering performance, developer experience, type safety, ecosystem, and when to choose each Rust web framework.
How TypeScript Codegen Works in Ultimo
A deep dive into Ultimo's TypeScript client generation pipeline — from #[derive(TS)] on Rust structs through the RPC registry to a fully typed, zero-dependency TypeScript client.
Migrating from Axum to Ultimo: A Practical Guide
A hands-on guide to migrating your Axum application to Ultimo — concept mapping, side-by-side code translations, gradual adoption strategy, and what you gain (and lose) in the process.