Rust expert to write a piece of code to maintain a L2 orderbook from Coinbase Pro's websocket

I'm looking for someone to write a piece of Rust code that can maintain the state of an orderbook with Coinbase Pro's websocket: [login to view URL] Performance is very important here. The process needs to include: - A way of subscribing and consuming data from the orderbook websocket. - Handling any websocket errors. - Build, maintain and update the orderbook (price and quantity at each level) on each websocket update as quickly as possible. The orderbook needs to be in a structure where we can walk up and down the prices easily (i.e. from the lowest ask price upwards and from the highest bid price downwards). - (Ideally) some performance metrics - how long does it take after each websocket update to finish maintaining the book? How much memory does this use? How many updates can it handle per second?