Axum Strangler

A utility crate to be able to easily use the Strangler Fig pattern with the Axum crate without having to use some sort of gateway.

Goal of the crate

To support the usecase where you want to rewrite services in Rust, but you can't justify the cost of migrating everything over all at once. With the StranglerService, you can put the Rustified service in front of the service you want to migrate, and out of the box, almost everything should still work. While migrating you slowly add more logic/routes to the Rust service and automatically those routes won't be handled by the service you're migrating away from.

Roadmap

• [ ] Use hyper::client instead of reqwest, to more nicely integrate with axum.
• [ ] Allow configuring some sort of middleware to be able to do some comparisons between the service you're strangling, and the Rust version, to automatically detect regressions etc.