Redis store: add default index and prefix values for auto-conf

Author: tzolov

spring-ai-docs/src/main/antora/modules/ROOT/pages/api/vectordbs/redis.adoc

@@ -63,7 +63,7 @@ A simple configuration can either be provided via Spring Boot's _application.pro
 
 [source,properties]
 ----
-spring.ai.vectorstore.redis.uri=<host of your redis instance>
+spring.ai.vectorstore.redis.uri=<your redis instance uri>
 spring.ai.vectorstore.redis.index=<your index name>
 spring.ai.vectorstore.redis.prefix=<your prefix>
 
@@ -100,9 +100,9 @@ You can use the following properties in your Spring Boot configuration to custom
 |===
 |Property| Description | Default value
 
-|`spring.ai.vectorstore.redis.uri`| Server connection URI | redis://localhost:6379
-|`spring.ai.vectorstore.redis.index`| Index name (REQUIRED) | -
-|`spring.ai.vectorstore.redis.prefix`| (REQUIRED) | -
+|`spring.ai.vectorstore.redis.uri`| Server connection URI | `redis://localhost:6379`
+|`spring.ai.vectorstore.redis.index`| Index name  | `default-index`
+|`spring.ai.vectorstore.redis.prefix`| Prefix | `default:`
 
 |===
 

spring-ai-spring-boot-autoconfigure/src/main/java/org/springframework/ai/autoconfigure/vectorstore/redis/RedisVectorStoreProperties.java

@@ -27,28 +27,28 @@ public class RedisVectorStoreProperties {
 
 	private String uri = "redis://localhost:6379";
 
-	private String index;
+	private String index = "default-index";
 
-	private String prefix;
+	private String prefix = "default:";
 
 	public String getUri() {
-		return uri;
+		return this.uri;
 	}
 
 	public void setUri(String uri) {
 		this.uri = uri;
 	}
 
 	public String getIndex() {
-		return index;
+		return this.index;
 	}
 
 	public void setIndex(String name) {
 		this.index = name;
 	}
 
 	public String getPrefix() {
-		return prefix;
+		return this.prefix;
 	}
 
 	public void setPrefix(String prefix) {

spring-ai-spring-boot-autoconfigure/src/test/java/org/springframework/ai/autoconfigure/vectorstore/redis/RedisVectorStorePropertiesTests.java

@@ -28,8 +28,8 @@ class RedisVectorStorePropertiesTests {
 	void defaultValues() {
 		var props = new RedisVectorStoreProperties();
 		assertThat(props.getUri()).isEqualTo("redis://localhost:6379");
-		assertThat(props.getIndex()).isNull();
-		assertThat(props.getPrefix()).isNull();
+		assertThat(props.getIndex()).isEqualTo("default-index");
+		assertThat(props.getPrefix()).isEqualTo("default:");
 	}
 
 	@Test