Switch redis starter to use Lettuce

This commit changes the default client to Lettuce. This has the side
effect of making the `spring-boot-starter-redis-reactive` irrelevant.

Recent improvements made pooling optional so `commons-pool2` is no
longer provided by default either.

Closes gh-10480

Author: snicoll

spring-boot-docs/src/main/asciidoc/howto.adoc

@@ -3029,13 +3029,12 @@ normal in a Spring Boot application (you normally only have one application cont
 
 
 
-[[howto-use-lettuce-instead-of-jedis]]
-=== Use Lettuce instead of Jedis
+[[howto-use-jedis-instead-of-lettuce]]
+=== Use Jedis instead of Lettuce
 The Spring Boot starter (`spring-boot-starter-data-redis`) uses
-https://github.com/xetorthio/jedis/[Jedis] by default. You need to exclude that dependency
-and include the https://github.com/lettuce-io/lettuce-core/[Lettuce] one instead. You also
-need `commons-pool2`. Spring Boot manages these dependencies to help make this process as
-easy as possible.
+https://github.com/lettuce-io/lettuce-core/[Lettuce] by default. You need to exclude that
+dependency and include the https://github.com/xetorthio/jedis/[Jedis] one instead. Spring
+Boot manages these dependencies to help make this process as easy as possible.
 
 Example in Maven:
 
@@ -3046,18 +3045,14 @@ Example in Maven:
 		<artifactId>spring-boot-starter-data-redis</artifactId>
 		<exclusions>
 			<exclusion>
-				<groupId>redis.clients</groupId>
-				<artifactId>jedis</artifactId>
+				<groupId>io.lettuce</groupId>
+				<artifactId>lettuce-core</artifactId>
 			</exclusion>
 		</exclusions>
 	</dependency>
 	<dependency>
-		<groupId>io.lettuce</groupId>
-		<artifactId>lettuce-core</artifactId>
-	</dependency>
-	<dependency>
-		<groupId>org.apache.commons</groupId>
-		<artifactId>commons-pool2</artifactId>
+		<groupId>redis.clients</groupId>
+		<artifactId>jedis</artifactId>
 	</dependency>
 ----
 
@@ -3066,12 +3061,11 @@ Example in Gradle:
 [source,groovy,indent=0,subs="verbatim,quotes,attributes"]
 ----
 	configurations {
-		compile.exclude module: "jedis"
+		compile.exclude module: "lettuce"
 	}
 
 	dependencies {
-		compile("io.lettuce:lettuce-core")
-		compile("org.apache.commons:commons-pool2")
+		compile("redis.clients:jedis")
 		// ...
 	}
 ----

spring-boot-docs/src/main/asciidoc/spring-boot-features.adoc

@@ -3352,14 +3352,13 @@ http://projects.spring.io/spring-data[projects.spring.io/spring-data].
 === Redis
 http://redis.io/[Redis] is a cache, message broker and richly-featured key-value store.
 Spring Boot offers basic auto-configuration for the
-https://github.com/xetorthio/jedis/[Jedis] and https://github.com/mp911de/lettuce/[Lettuce]
-client library and abstractions on top of it provided by
-https://github.com/spring-projects/spring-data-redis[Spring Data Redis].
+https://github.com/lettuce-io/lettuce-core/[Lettuce] and
+https://github.com/xetorthio/jedis/[Jedis] client library and abstractions on top of it
+provided by https://github.com/spring-projects/spring-data-redis[Spring Data Redis].
 
 There is a `spring-boot-starter-data-redis` '`Starter`' for collecting the dependencies in
-a convenient way that uses https://github.com/xetorthio/jedis/[Jedis] by default. If you
-are building a reactive application, the `spring-boot-starter-data-redis-reactive`
-'`Starter`' will get you going.
+a convenient way that uses https://github.com/lettuce-io/lettuce-core/[Lettuce] by
+default. Both traditional and regular applications are handled by that starter.
 
 
 
@@ -3387,8 +3386,8 @@ instance will attempt to connect to a Redis server using `localhost:6379`:
 ----
 
 TIP: You can also register an arbitrary number of beans implementing
-`JedisClientConfigurationBuilderCustomizer` for more advanced customizations. If you are
-using Lettuce, `LettuceClientConfigurationBuilderCustomizer` is also available.
+`LettuceClientConfigurationBuilderCustomizer` for more advanced customizations. If you are
+using Jedis, `JedisClientConfigurationBuilderCustomizer` is also available.
 
 If you add a `@Bean` of your own of any of the auto-configured types it will replace the
 default (except in the case of `RedisTemplate` the exclusion is based on the bean name

spring-boot-starters/pom.xml

@@ -38,7 +38,6 @@
 		<module>spring-boot-starter-data-mongodb-reactive</module>
 		<module>spring-boot-starter-data-neo4j</module>
 		<module>spring-boot-starter-data-redis</module>
-		<module>spring-boot-starter-data-redis-reactive</module>
 		<module>spring-boot-starter-data-rest</module>
 		<module>spring-boot-starter-data-solr</module>
 		<module>spring-boot-starter-freemarker</module>

spring-boot-starters/spring-boot-starter-data-redis-reactive/pom.xml

@@ -9,7 +9,7 @@
 	<artifactId>spring-boot-starter-data-redis</artifactId>
 	<name>Spring Boot Data Redis Starter</name>
 	<description>Starter for using Redis key-value data store with Spring Data Redis and
-		the Jedis client</description>
+		the Lettuce client</description>
 	<url>http://projects.spring.io/spring-boot/</url>
 	<organization>
 		<name>Pivotal Software, Inc.</name>
@@ -34,8 +34,8 @@
 			</exclusions>
 		</dependency>
 		<dependency>
-			<groupId>redis.clients</groupId>
-			<artifactId>jedis</artifactId>
+			<groupId>io.lettuce</groupId>
+			<artifactId>lettuce-core</artifactId>
 		</dependency>
 	</dependencies>
 	<build>

spring-boot-starters/spring-boot-starter-data-redis-reactive/src/main/resources/META-INF/spring.provides

@@ -1 +1 @@
-provides: spring-data-redis,jedis
+provides: spring-data-redis,lettuce-core