The cache abstraction is a core feature of the Spring Framework. Basic
features such as `@EnableCaching` are therefore available by default with
no extra dependencies necessary.
However, the actual cache adapters for JCache, Ehcache 2.x, Caffeine and
Guava are located in a separated module, `spring-context-support`. Spring
Boot provides that artifact via the `spring-boot-starter-cache` starter.
It is quite easy to "only" add the cache library dependencies and forget
about this extra dependencies since `@EnableCaching` is available by
default. This commit clarifies the role of the starer in each section so
that it is more obvious. We're already explaining this at the beginning
of the section but it seems that's not enough.
Closes gh-7071
Previously, an URI and individual client attributes can be set to
configure the mongo client. In such a scenario, the URI is ignored.
This commit changes the URI to be "null" and the creation of the client
to fail if both the uri and client attributes are set. If no client
attributes are set, the uri is used as before.
Closes gh-6739
This commit enables compatibility build against Spring Framework 5.
The Velocity and Guava support that are deprecated in the 1.x line have
been removed and few other classes contain minor change to comply to non
backward compatible changes in Spring Framework 5.
This commit also switches the required java version to 8.
Closes gh-6977
Add an explicit note that states that "spring.datasource.url" (or more
specifically "spring.datasource.class-name" that is inferred from the
former) is necessary to connect to a database. If the class-name isn't
specified, Spring Boot will attempt to auto-configure an embedded
database.
Closes gh-6907
This commit improves the startup error message so that it does not
reference `--debug` anymore. Such command-line switch only works when
the application is started using `java -jar`.
The error message now refers directly to a section of the documentation
that provides more details and links to more useful examples.
Closes gh-6593
Stephane Nicoll
Dan Stine
Johnny Lim
Michael Stummvoll
Andy Wilkinson
Spring Buildmaster
Phillip Webb
Mike Gehard