Using the Type System Effectively

The author discusses how they use the Rust type system at Svix to catch most errors at compile time instead of runtime, and shares various techniques such as wrapper types, parse, don't validate, define required invariants in code, type system state machines, limiting functionality based on context, enforcing typing in generic cache stores, and catching missed enum variants. The author argues that the Rust type system is effective in reducing errors, improving development experience, and making it easier to onboard new engineers to a codebase or library. They also highlight how Svix uses these techniques to build a secure, reliable, and scalable webhook platform.