In this chapter, we'll have a look at alternative frameworks for creating microservices. In the previous chapters, we used a hyper crate to handle HTTP interaction, but it required us to write asynchronous code. If you don't need low-level control, if a microservice you've created won't work with a high load, or if you need to write one simply and quickly, you can try using the following crates to create microservices:

• rouille
• nickel
• rocket
• gotham

In this chapter, we will create four microservices that use database interaction concepts from previous chapters.