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

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]]
+[[howto-use-jedis-instead-of-lettuce]]
-=== Use Lettuce instead of Jedis
+=== 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
+https://github.com/lettuce-io/lettuce-core/[Lettuce] by default. You need to exclude that
-and include the https://github.com/lettuce-io/lettuce-core/[Lettuce] one instead. You also
+dependency and include the https://github.com/xetorthio/jedis/[Jedis] one instead. Spring
-need `commons-pool2`. Spring Boot manages these dependencies to help make this process as
+Boot manages these dependencies to help make this process as easy as possible.
-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>
+				<groupId>io.lettuce</groupId>
-				<artifactId>jedis</artifactId>
+				<artifactId>lettuce-core</artifactId>
 			</exclusion>
 		</exclusions>
 	</dependency>
 	<dependency>
-		<groupId>io.lettuce</groupId>
+		<groupId>redis.clients</groupId>
-		<artifactId>lettuce-core</artifactId>
+		<artifactId>jedis</artifactId>
-	</dependency>
-	<dependency>
-		<groupId>org.apache.commons</groupId>
-		<artifactId>commons-pool2</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("redis.clients:jedis")
-		compile("org.apache.commons:commons-pool2")
 		// ...
 	}
 ----

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]
+https://github.com/lettuce-io/lettuce-core/[Lettuce] and
-client library and abstractions on top of it provided by
+https://github.com/xetorthio/jedis/[Jedis] client library and abstractions on top of it
-https://github.com/spring-projects/spring-data-redis[Spring Data Redis].
+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
+a convenient way that uses https://github.com/lettuce-io/lettuce-core/[Lettuce] by
-are building a reactive application, the `spring-boot-starter-data-redis-reactive`
+default. Both traditional and regular applications are handled by that starter.
-'`Starter`' will get you going.
 
 
 
@@ -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
+`LettuceClientConfigurationBuilderCustomizer` for more advanced customizations. If you are
-using Lettuce, `LettuceClientConfigurationBuilderCustomizer` is also available.
+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

@@ -1,71 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
-	<modelVersion>4.0.0</modelVersion>
-	<parent>
-		<groupId>org.springframework.boot</groupId>
-		<artifactId>spring-boot-starters</artifactId>
-		<version>2.0.0.BUILD-SNAPSHOT</version>
-	</parent>
-	<artifactId>spring-boot-starter-data-redis-reactive</artifactId>
-	<name>Spring Boot Data Redis Reactive Starter</name>
-	<description>Starter for using Redis key-value data store with Spring Data Redis
-		reactive and the Lettuce client</description>
-	<url>http://projects.spring.io/spring-boot/</url>
-	<organization>
-		<name>Pivotal Software, Inc.</name>
-		<url>http://www.spring.io</url>
-	</organization>
-	<properties>
-		<main.basedir>${basedir}/../..</main.basedir>
-	</properties>
-	<dependencies>
-		<dependency>
-			<groupId>org.springframework.boot</groupId>
-			<artifactId>spring-boot-starter</artifactId>
-		</dependency>
-		<dependency>
-			<groupId>org.springframework.data</groupId>
-			<artifactId>spring-data-redis</artifactId>
-			<exclusions>
-				<exclusion>
-					<groupId>org.slf4j</groupId>
-					<artifactId>jcl-over-slf4j</artifactId>
-				</exclusion>
-			</exclusions>
-		</dependency>
-		<dependency>
-			<groupId>io.lettuce</groupId>
-			<artifactId>lettuce-core</artifactId>
-		</dependency>
-		<dependency>
-			<groupId>org.apache.commons</groupId>
-			<artifactId>commons-pool2</artifactId>
-		</dependency>
-		<dependency>
-			<groupId>io.projectreactor</groupId>
-			<artifactId>reactor-core</artifactId>
-		</dependency>
-	</dependencies>
-	<build>
-		<plugins>
-			<plugin>
-				<groupId>org.basepom.maven</groupId>
-				<artifactId>duplicate-finder-maven-plugin</artifactId>
-				<executions>
-					<execution>
-						<id>duplicate-dependencies</id>
-						<phase>validate</phase>
-						<goals>
-							<goal>check</goal>
-						</goals>
-						<configuration>
-							<ignoredResourcePatterns>
-								<ignoredResourcePattern>changelog.txt</ignoredResourcePattern>
-							</ignoredResourcePatterns>
-						</configuration>
-					</execution>
-				</executions>
-			</plugin>
-		</plugins>
-	</build>
-</project>

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

@@ -1 +0,0 @@
-provides: spring-data-redis,lettuce-core

spring-boot-starters/spring-boot-starter-data-redis/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>
+			<groupId>io.lettuce</groupId>
-			<artifactId>jedis</artifactId>
+			<artifactId>lettuce-core</artifactId>
 		</dependency>
 	</dependencies>
 	<build>

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

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