Chapter 3

1. GET requests a resource to be downloaded; PUT sends some data to replace existing data; POST sends some data that the server should consider as new; DELETE requests the removal of a resource.
2. The Curl utility.
3. The handler declares an argument, such as info: Path<(String,)>, and then the value of the &info.0 expression is a reference to the first URI parameter.
4. By using the content_type method of the HttpResponse type – for example, HttpResponse::Ok().content_type("application/json").
5. Using a pseudo-random number generator, you generate a large integer number, format it as a string, and append that string to a prefix. Then, you try to create a new file having that name. If such creation fails because another file exists with that name, you try to generate another filename, until you find an unused combination.
6. To cache information that can be obtained again using any request, but for which it would be costly to do so.
7. Because the state is shared by...