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Engineering & Product

Deep-dives, tutorials, and updates from the Flux team.

engineeringMar 21, 2026

We Built Our Marketing Website Entirely in Rust

How we used Zola and Leptos WASM islands to build flux.dev — a content-heavy marketing site with interactive components, entirely in Rust.

tutorialMar 20, 2026

Add SSO to Your Rust App in 10 Lines

A step-by-step guide to adding SAML SSO to any Rust web application using Flux. No XML parsing required.

engineeringMar 20, 2026

The Entitlements Problem: Why Auth + Billing + Flags Need to Talk

Every SaaS app answers the same question thousands of times per second: can this user do this thing on this plan? Here's why it's harder than it looks.

engineeringMar 20, 2026

Why We Chose Rust for the Hot Path

How Rust's zero-cost abstractions let us process 2M auth events per second with single-digit microsecond latency.

engineeringMar 20, 2026

Why We Built Flux

Every SaaS app rebuilds the same infrastructure. Auth, billing, feature flags, observability — the list never ends. We built Flux to end the cycle.

engineeringMar 16, 2026

Observability Without the $50K Datadog Bill

How Flux provides tenant-aware observability at a fraction of the cost of traditional monitoring platforms.

engineeringMar 12, 2026

Multi-Tenancy Is More Than Organizations

Everyone claims multi-tenancy support. But an 'organizations' feature isn't multi-tenancy — it's a starting point.

engineeringMar 08, 2026

Zero-Config Audit Logging: Compliance Without the Pain

SOC2 and GDPR require audit logs. Here's how Flux gives you structured, exportable, tenant-aware audit logging with zero configuration.