Answers

1. We used the Redis crate and macros to define the Redis module. We then compiled our Redis module as a dynamic C library, and then got our Redis server to load the module on startup. We could use our module via the commands we specified in the module when making a request to the Redis server.
2. We copied over the code of our Redis module into a Rust base image. We then build the Redis module. We then move over to the second stage of the build which is the Redis image, and then copy over our compiled module to the Redis image but nothing else. We then run the Redis server with our module loaded.
3. We created traits for the interaction with the cache. We then implemented a Redis handle for these traits, and then mounted those traits to the server views.
4. The main advantage is that we can implement other handles for different storage mechanisms. This means that we can easily unit test our code with test implementations of the cache. It also makes it easy to move the implementation of...