apache httpclient5

[dennisvang]

The pom has an apache dependency httpclient5. Why? What is it used for?

[dennisvang]

According to spring-boot docs, this is used by TestRestTemplate:

It is recommended, but not mandatory, to use the Apache HTTP Client (version 5.1 or better). [...]

Also note the following from the Spring Boot 3.0 Migration Guide:

Support for Apache HttpClient has been removed in Spring Framework 6.0, immediately replaced by org.apache.httpcomponents.client5:httpclient5 (note: this dependency has a different groupId). If you are noticing issues with HTTP client behavior, it could be that RestTemplate is falling back to the JDK client. org.apache.httpcomponents:httpclient can be brought transitively by other dependencies, so your application might rely on this dependency without declaring it.

So httpclient5 is now a spring-boot managed dependency.