Dynamic Indexing

README.md

@@ -79,6 +79,8 @@ Redis OM Spring provides all Spring Data Redis capabilities, plus:
   using `@EnableRedisDocumentRepositories`
 - Declarative search indexes via `@Indexed`
 - Full-text search indexes via `@Searchable`
+- **Dynamic index naming and multi-tenant support** with SpEL expressions and `RedisIndexContext`
+- **Index migration service** with Blue-Green, Dual-Write, and In-Place migration strategies
 - `EntityStream`s: Streams-based Query and Aggregations Builder
 - `@Bloom` annotation to determine very fast, with and with high degree of certainty, whether a value is in a
   collection.
@@ -265,6 +267,19 @@ public class Company {
 }
 ```
 
+For **multi-tenant applications**, you can use dynamic index naming with SpEL expressions:
+
+```java
+// Dynamic index naming for multi-tenant support
+@Document
+@IndexingOptions(indexName = "#{@environment.getProperty('app.tenant')}_companies_idx")
+public class Company {
+  @Id private String id;
+  @Searchable private String name;
+  // other fields...
+}
+```
+
 Redis OM Spring, replaces the conventional `UUID` primary key strategy generation with a `ULID` (Universally Unique
 Lexicographically Sortable Identifier) which is faster to generate and easier on the eyes.
 

demos/roms-multitenant/README.md

@@ -0,0 +1,201 @@
+# Redis OM Spring Multi-Tenant Demo
+
+This demo showcases the **Dynamic Indexing** features of Redis OM Spring, enabling multi-tenant SaaS applications with complete data isolation.
+
+## Features Demonstrated
+
+### 1. SpEL-based Dynamic Index Naming
+
+Use Spring Expression Language (SpEL) in `@IndexingOptions` annotations:
+
+```java
+@Document
+@IndexingOptions(
+    indexName = "products_#{@tenantService.getCurrentTenant()}_idx",
+    keyPrefix = "#{@tenantService.getCurrentTenant()}:products:"
+)
+public class Product { ... }
+```
+
+### 2. Multi-Tenant Index Isolation
+
+Each tenant gets their own:
+- **Search Index**: `products_acme_idx`, `products_globex_idx`
+- **Key Prefix**: `acme:products:*`, `globex:products:*`
+- **Complete Data Isolation**: Searches only return tenant's own data
+
+### 3. Environment-based Configuration
+
+Configure indexes based on deployment environment:
+
+```java
+@IndexingOptions(
+    indexName = "orders_#{@environment.getProperty('app.environment')}_idx"
+)
+```
+
+### 4. Ephemeral Indexes with TTL
+
+Create temporary indexes that auto-delete:
+
+```java
+ephemeralIndexService.createEphemeralIndex(
+    Product.class,
+    "temp_analytics_idx",
+    Duration.ofMinutes(30)
+);
+```
+
+### 5. Index Migration & Aliasing
+
+Zero-downtime schema migrations using Redis aliases:
+
+```java
+// Blue-Green deployment
+indexer.createAlias("products_v2_idx", "products");
+indexer.updateAlias("products_v1_idx", "products_v2_idx", "products");
+```
+
+### 6. Bulk Index Operations
+
+Manage all indexes at once:
+
+```java
+indexer.createIndexes();  // Create all registered indexes
+indexer.dropIndexes();    // Drop all managed indexes
+indexer.listIndexes();    // List all index names
+```
+
+## Running the Demo
+
+### Prerequisites
+
+1. Redis Stack running on localhost:6379
+   ```bash
+   docker run -p 6379:6379 redis/redis-stack
+   ```
+
+2. Build the project:
+   ```bash
+   ./gradlew build -x test
+   ```
+
+### Start the Application
+
+```bash
+./gradlew :demos:roms-multitenant:bootRun
+```
+
+Watch the console for a visual walkthrough of all features!
+
+## REST API
+
+### Product Operations (Tenant-Scoped)
+
+```bash
+# Create a product for tenant "acme"
+curl -X POST http://localhost:8080/api/tenants/acme/products \
+  -H "Content-Type: application/json" \
+  -d '{
+    "name": "Widget Pro",
+    "description": "Professional grade widget",
+    "category": "Electronics",
+    "sku": "WDG-PRO-001",
+    "price": 299.99,
+    "stockQuantity": 50,
+    "active": true
+  }'
+
+# List products for tenant "acme"
+curl http://localhost:8080/api/tenants/acme/products
+
+# Search products
+curl "http://localhost:8080/api/tenants/acme/products/search?q=widget"
+
+# Find by category
+curl http://localhost:8080/api/tenants/acme/products/category/Electronics
+
+# Find by price range
+curl "http://localhost:8080/api/tenants/acme/products/price-range?minPrice=100&maxPrice=500"
+```
+
+### Admin Operations
+
+```bash
+# List all managed indexes
+curl http://localhost:8080/api/admin/indexes
+
+# Create all registered indexes
+curl -X POST http://localhost:8080/api/admin/indexes/create-all
+
+# Create index for specific tenant
+curl -X POST http://localhost:8080/api/admin/tenants/acme/indexes
+
+# Check if tenant index exists
+curl http://localhost:8080/api/admin/tenants/acme/indexes/exists
+
+# Create ephemeral index (60 second TTL)
+curl -X POST http://localhost:8080/api/admin/indexes/ephemeral \
+  -H "Content-Type: application/json" \
+  -d '{"indexName": "temp_batch_idx", "ttlSeconds": 60}'
+
+# Create index alias
+curl -X POST http://localhost:8080/api/admin/indexes/products_acme_idx/alias/products
+
+# Remove index alias
+curl -X DELETE http://localhost:8080/api/admin/indexes/products_acme_idx/alias/products
+```
+
+## Multi-Tenant Usage Pattern
+
+```java
+@Service
+public class ProductService {
+
+    @Autowired
+    private TenantService tenantService;
+
+    @Autowired
+    private ProductRepository productRepository;
+
+    public List<Product> getProductsForTenant(String tenantId) {
+        tenantService.setCurrentTenant(tenantId);
+        try {
+            return productRepository.findAll();
+        } finally {
+            tenantService.clearTenant();
+        }
+    }
+}
+```
+
+## Configuration
+
+### application.yaml
+
+```yaml
+spring:
+  data:
+    redis:
+      host: localhost
+      port: 6379
+
+app:
+  environment: development  # Used in environment-based index names
+  version: 1.0.0
+```
+
+## Key Classes
+
+| Class | Description |
+|-------|-------------|
+| `TenantService` | ThreadLocal tenant context management |
+| `Product` | Entity with dynamic index annotations |
+| `ProductController` | Tenant-scoped REST operations |
+| `AdminController` | Index management endpoints |
+| `DemoRunner` | Visual feature walkthrough |
+
+## Learn More
+
+- [Dynamic Indexing Design Document](https://github.com/redis/redis-om-spring/wiki/Dynamic-Indexing-Feature-Design)
+- [Redis OM Spring Documentation](https://github.com/redis/redis-om-spring)

demos/roms-multitenant/build.gradle

@@ -0,0 +1,61 @@
+plugins {
+	id 'java'
+	id 'org.springframework.boot'
+	id 'io.spring.dependency-management'
+}
+
+java {
+	toolchain {
+		languageVersion = JavaLanguageVersion.of(21)
+	}
+}
+
+// Don't publish this module
+tasks.matching { it.name.startsWith('publish') }.configureEach {
+	enabled = false
+}
+
+repositories {
+	mavenLocal()
+	mavenCentral()
+	maven {
+		name = 'Spring Milestones'
+		url = 'https://repo.spring.io/milestone'
+	}
+	maven {
+		name = 'Spring Snapshots'
+		url = 'https://repo.spring.io/snapshot'
+	}
+}
+
+dependencies {
+	implementation project(':redis-om-spring')
+
+	// Important for RedisOM annotation processing!
+	annotationProcessor project(':redis-om-spring')
+	testAnnotationProcessor project(':redis-om-spring')
+
+	// Lombok
+	compileOnly 'org.projectlombok:lombok'
+	annotationProcessor 'org.projectlombok:lombok'
+	testCompileOnly 'org.projectlombok:lombok'
+	testAnnotationProcessor 'org.projectlombok:lombok'
+
+	// Spring Boot starters
+	implementation 'org.springframework.boot:spring-boot-starter-web'
+	implementation 'org.springframework.boot:spring-boot-devtools'
+
+	// Test dependencies
+	testImplementation 'org.springframework.boot:spring-boot-starter-test'
+	testImplementation "com.redis:testcontainers-redis:${testcontainersRedisVersion}"
+	testImplementation "org.testcontainers:junit-jupiter"
+}
+
+// Use -parameters flag for Spring
+tasks.withType(JavaCompile).configureEach {
+	options.compilerArgs << '-parameters'
+}
+
+test {
+	useJUnitPlatform()
+}