redoom opened a new pull request, #1272:
URL: https://github.com/apache/dubbo-samples/pull/1272
## Summary
Add a sample project demonstrating **AsyncRpcResult**
## Features
### Four AsyncRpcResult Patterns in Provider Filters
1. **AsyncShortCircuitFilter**
- Create `AsyncRpcResult` without invoking service
- Use case: Cache, circuit breaker, rate limiting
2. **DecorateResultFilter**
- Decorate results using `getResponseFuture().thenApply()`
- Use case: Response wrapping, logging
3. **AttachAndDecorateFilter**
- Add attachments for distributed tracing
- Use case: trace-id, span-id propagation
4. **EventDrivenFilter**
- Integrate external async services
- Use case: Async HTTP, MQ, reactive DB
### Two Consumer Async Patterns
- **Method 1**: `CompletableFuture<T>` in method signature
- **Method 2**: `@DubboReference(async=true)` +
`RpcContext.getCompletableFuture()
## Module Structure
- **interface**: Service definitions
- **provider**: Implementation + 4 async Filters
- **consumer**: Demonstrates both async invocation methods
[https://github.com/apache/dubbo/issues/15567](url)
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