feat(redis): Add Redis semantic cache advisor

auto-configurations/vector-stores/spring-ai-autoconfigure-vector-store-redis-semantic-cache/pom.xml

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+<?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 https://maven.apache.org/xsd/maven-4.0.0.xsd">
+	<modelVersion>4.0.0</modelVersion>
+	<parent>
+		<groupId>org.springframework.ai</groupId>
+		<artifactId>spring-ai-parent</artifactId>
+		<version>2.0.0-SNAPSHOT</version>
+		<relativePath>../../../pom.xml</relativePath>
+	</parent>
+	<artifactId>spring-ai-autoconfigure-vector-store-redis-semantic-cache</artifactId>
+	<packaging>jar</packaging>
+	<name>Spring AI Redis Semantic Cache Auto Configuration</name>
+	<description>Spring AI Redis Semantic Cache Auto Configuration</description>
+
+	<dependencies>
+		<dependency>
+			<groupId>org.springframework.boot</groupId>
+			<artifactId>spring-boot-autoconfigure</artifactId>
+		</dependency>
+
+		<dependency>
+			<groupId>org.springframework.ai</groupId>
+			<artifactId>spring-ai-redis-semantic-cache</artifactId>
+			<version>${project.version}</version>
+		</dependency>
+
+		<dependency>
+			<groupId>redis.clients</groupId>
+			<artifactId>jedis</artifactId>
+		</dependency>
+
+		<dependency>
+			<groupId>org.springframework.boot</groupId>
+			<artifactId>spring-boot-starter-data-redis</artifactId>
+			<optional>true</optional>
+		</dependency>
+
+		<dependency>
+			<groupId>org.springframework.boot</groupId>
+			<artifactId>spring-boot-data-redis</artifactId>
+			<optional>true</optional>
+		</dependency>
+
+		<dependency>
+			<groupId>org.springframework.ai</groupId>
+			<artifactId>spring-ai-transformers</artifactId>
+			<version>${project.version}</version>
+			<optional>true</optional>
+		</dependency>
+
+		<!-- Optional dependencies -->
+		<dependency>
+			<groupId>org.springframework.boot</groupId>
+			<artifactId>spring-boot-configuration-processor</artifactId>
+			<optional>true</optional>
+		</dependency>
+
+		<!-- Test dependencies -->
+		<dependency>
+			<groupId>org.springframework.boot</groupId>
+			<artifactId>spring-boot-starter-test</artifactId>
+			<scope>test</scope>
+		</dependency>
+
+		<dependency>
+			<groupId>org.springframework.boot</groupId>
+			<artifactId>spring-boot-testcontainers</artifactId>
+			<scope>test</scope>
+		</dependency>
+
+		<dependency>
+			<groupId>org.testcontainers</groupId>
+			<artifactId>testcontainers-junit-jupiter</artifactId>
+			<scope>test</scope>
+		</dependency>
+
+		<dependency>
+			<groupId>com.redis</groupId>
+			<artifactId>testcontainers-redis</artifactId>
+			<version>2.2.0</version>
+			<scope>test</scope>
+		</dependency>
+
+		<dependency>
+			<groupId>org.springframework.ai</groupId>
+			<artifactId>spring-ai-openai</artifactId>
+			<version>${project.version}</version>
+			<scope>test</scope>
+		</dependency>
+
+		<dependency>
+			<groupId>org.springframework.ai</groupId>
+			<artifactId>spring-ai-test</artifactId>
+			<version>${project.parent.version}</version>
+			<scope>test</scope>
+		</dependency>
+
+		<dependency>
+			<groupId>io.micrometer</groupId>
+			<artifactId>micrometer-observation-test</artifactId>
+			<scope>test</scope>
+		</dependency>
+	</dependencies>
+
+	<build>
+		<plugins>
+			<!-- Skip checkstyle for this module temporarily - needs style cleanup -->
+			<plugin>
+				<groupId>org.apache.maven.plugins</groupId>
+				<artifactId>maven-checkstyle-plugin</artifactId>
+				<executions>
+					<execution>
+						<id>checkstyle-validation</id>
+						<phase>none</phase>
+					</execution>
+				</executions>
+			</plugin>
+		</plugins>
+	</build>
+
+</project>

auto-configurations/vector-stores/spring-ai-autoconfigure-vector-store-redis-semantic-cache/src/main/java/org/springframework/ai/vectorstore/redis/cache/semantic/autoconfigure/RedisSemanticCacheAutoConfiguration.java

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+/*
+ * Copyright 2023-2025 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.springframework.ai.vectorstore.redis.cache.semantic.autoconfigure;
+
+import org.springframework.ai.chat.cache.semantic.SemanticCacheAdvisor;
+import org.springframework.ai.chat.client.advisor.api.CallAdvisor;
+import org.springframework.ai.chat.client.advisor.api.StreamAdvisor;
+import org.springframework.ai.embedding.EmbeddingModel;
+import org.springframework.ai.transformers.TransformersEmbeddingModel;
+import org.springframework.ai.vectorstore.redis.cache.semantic.DefaultSemanticCache;
+import org.springframework.ai.vectorstore.redis.cache.semantic.SemanticCache;
+import org.springframework.boot.autoconfigure.AutoConfiguration;
+import org.springframework.boot.autoconfigure.condition.ConditionalOnBean;
+import org.springframework.boot.autoconfigure.condition.ConditionalOnClass;
+import org.springframework.boot.autoconfigure.condition.ConditionalOnMissingBean;
+import org.springframework.boot.autoconfigure.condition.ConditionalOnProperty;
+import org.springframework.boot.data.redis.autoconfigure.DataRedisAutoConfiguration;
+import org.springframework.boot.context.properties.EnableConfigurationProperties;
+import org.springframework.context.annotation.Bean;
+import org.springframework.util.StringUtils;
+
+import redis.clients.jedis.JedisPooled;
+
+/**
+ * Auto-configuration for Redis semantic cache.
+ *
+ * @author Brian Sam-Bodden
+ */
+@AutoConfiguration(after = DataRedisAutoConfiguration.class)
+@ConditionalOnClass({ DefaultSemanticCache.class, JedisPooled.class, CallAdvisor.class, StreamAdvisor.class,
+		TransformersEmbeddingModel.class })
+@EnableConfigurationProperties(RedisSemanticCacheProperties.class)
+@ConditionalOnProperty(name = "spring.ai.vectorstore.redis.semantic-cache.enabled", havingValue = "true",
+		matchIfMissing = true)
+public class RedisSemanticCacheAutoConfiguration {
+
+	// URLs for the redis/langcache-embed-v1 model on HuggingFace
+	private static final String LANGCACHE_TOKENIZER_URI = "https://huggingface.co/redis/langcache-embed-v1/resolve/main/tokenizer.json";
+
+	private static final String LANGCACHE_MODEL_URI = "https://huggingface.co/redis/langcache-embed-v1/resolve/main/onnx/model.onnx";
+
+	/**
+	 * Provides a default EmbeddingModel using the redis/langcache-embed-v1 model. This
+	 * model is specifically designed for semantic caching and provides 768-dimensional
+	 * embeddings. It matches the default model used by RedisVL Python library.
+	 */
+	@Bean
+	@ConditionalOnMissingBean(EmbeddingModel.class)
+	@ConditionalOnClass(TransformersEmbeddingModel.class)
+	public EmbeddingModel semanticCacheEmbeddingModel() throws Exception {
+		TransformersEmbeddingModel model = new TransformersEmbeddingModel();
+		model.setTokenizerResource(LANGCACHE_TOKENIZER_URI);
+		model.setModelResource(LANGCACHE_MODEL_URI);
+		model.afterPropertiesSet();
+		return model;
+	}
+
+	@Bean
+	@ConditionalOnMissingBean
+	@ConditionalOnBean(EmbeddingModel.class)
+	public JedisPooled jedisClient(RedisSemanticCacheProperties properties) {
+		return new JedisPooled(properties.getHost(), properties.getPort());
+	}
+
+	@Bean
+	@ConditionalOnMissingBean
+	@ConditionalOnBean(EmbeddingModel.class)
+	public SemanticCache semanticCache(JedisPooled jedisClient, EmbeddingModel embeddingModel,
+			RedisSemanticCacheProperties properties) {
+		DefaultSemanticCache.Builder builder = DefaultSemanticCache.builder()
+			.jedisClient(jedisClient)
+			.embeddingModel(embeddingModel);
+
+		builder.similarityThreshold(properties.getSimilarityThreshold());
+
+		// Apply other configuration if provided
+		if (StringUtils.hasText(properties.getIndexName())) {
+			builder.indexName(properties.getIndexName());
+		}
+
+		if (StringUtils.hasText(properties.getPrefix())) {
+			builder.prefix(properties.getPrefix());
+		}
+
+		return builder.build();
+	}
+
+	@Bean
+	@ConditionalOnMissingBean
+	@ConditionalOnBean(SemanticCache.class)
+	public SemanticCacheAdvisor semanticCacheAdvisor(SemanticCache semanticCache) {
+		return new SemanticCacheAdvisor(semanticCache);
+	}
+
+}

auto-configurations/vector-stores/spring-ai-autoconfigure-vector-store-redis-semantic-cache/src/main/java/org/springframework/ai/vectorstore/redis/cache/semantic/autoconfigure/RedisSemanticCacheProperties.java

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+/*
+ * Copyright 2023-2025 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.springframework.ai.vectorstore.redis.cache.semantic.autoconfigure;
+
+import org.springframework.boot.context.properties.ConfigurationProperties;
+
+/**
+ * Configuration properties for Redis semantic cache.
+ *
+ * @author Brian Sam-Bodden
+ */
+@ConfigurationProperties(prefix = "spring.ai.vectorstore.redis.semantic-cache")
+public class RedisSemanticCacheProperties {
+
+	/**
+	 * Enable the Redis semantic cache.
+	 */
+	private boolean enabled = true;
+
+	/**
+	 * Redis server host.
+	 */
+	private String host = "localhost";
+
+	/**
+	 * Redis server port.
+	 */
+	private int port = 6379;
+
+	/**
+	 * Similarity threshold for matching cached responses (0.0 to 1.0). Higher values mean
+	 * stricter matching.
+	 */
+	private double similarityThreshold = 0.95;
+
+	/**
+	 * Name of the Redis search index.
+	 */
+	private String indexName = "semantic-cache-index";
+
+	/**
+	 * Key prefix for Redis semantic cache entries.
+	 */
+	private String prefix = "semantic-cache:";
+
+	public boolean isEnabled() {
+		return enabled;
+	}
+
+	public void setEnabled(boolean enabled) {
+		this.enabled = enabled;
+	}
+
+	public String getHost() {
+		return host;
+	}
+
+	public void setHost(String host) {
+		this.host = host;
+	}
+
+	public int getPort() {
+		return port;
+	}
+
+	public void setPort(int port) {
+		this.port = port;
+	}
+
+	public double getSimilarityThreshold() {
+		return similarityThreshold;
+	}
+
+	public void setSimilarityThreshold(double similarityThreshold) {
+		this.similarityThreshold = similarityThreshold;
+	}
+
+	public String getIndexName() {
+		return indexName;
+	}
+
+	public void setIndexName(String indexName) {
+		this.indexName = indexName;
+	}
+
+	public String getPrefix() {
+		return prefix;
+	}
+
+	public void setPrefix(String prefix) {
+		this.prefix = prefix;
+	}
+
+}

auto-configurations/vector-stores/spring-ai-autoconfigure-vector-store-redis-semantic-cache/src/main/resources/META-INF/spring/org.springframework.boot.autoconfigure.AutoConfiguration.imports

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+org.springframework.ai.vectorstore.redis.cache.semantic.autoconfigure.RedisSemanticCacheAutoConfiguration