diff --git a/starter/src/test/java/cn/skcks/study/rxjava/RxJavaStudyStarterTest.java b/starter/src/test/java/cn/skcks/study/rxjava/RxJavaStudyStarterTest.java
index 06bec66..b37e014 100644
--- a/starter/src/test/java/cn/skcks/study/rxjava/RxJavaStudyStarterTest.java
+++ b/starter/src/test/java/cn/skcks/study/rxjava/RxJavaStudyStarterTest.java
@@ -6,6 +6,7 @@ import cn.skcks.docking.gb28181.sip.method.register.request.RegisterRequestBuild
 import cn.skcks.docking.gb28181.sip.method.register.response.RegisterResponseBuilder;
 import gov.nist.javax.sip.message.SIPRequest;
 import gov.nist.javax.sip.message.SIPResponse;
+import io.reactivex.rxjava3.core.BackpressureStrategy;
 import io.reactivex.rxjava3.core.Flowable;
 import io.reactivex.rxjava3.core.Observable;
 import io.reactivex.rxjava3.disposables.Disposable;
@@ -19,6 +20,7 @@ import org.springframework.boot.test.context.SpringBootTest;
 import javax.sip.ListeningPoint;
 import javax.sip.message.Request;
 import javax.sip.message.Response;
+import java.util.Arrays;
 import java.util.concurrent.TimeUnit;
 import java.util.concurrent.TimeoutException;
 import java.util.concurrent.atomic.AtomicLong;
@@ -149,22 +151,31 @@ public class RxJavaStudyStarterTest {
     @SneakyThrows
     @Test
     void timeoutTest(){
-        Observable<Object> observable = Observable.create(emitter -> {
+        Flowable<Object> observable = Flowable.create(emitter -> {
             Thread.sleep(50);
-            emitter.onNext("Hello");
+            Arrays.stream("Hello".split("")).forEach(emitter::onNext);
             Thread.sleep(200);
             emitter.onNext("World");
             emitter.onComplete();
-        });
+        }, BackpressureStrategy.LATEST);
 
+        // 缓存数据
+        observable = observable.cacheWithInitialCapacity(1);
+        // 超时时间 100ms
         observable = observable.timeout(100, TimeUnit.MILLISECONDS);
+        // 超时时间 100ms + 返回默认值
         // observable.timeout(100, TimeUnit.MILLISECONDS, Observable.empty());
-        observable = observable.retry(2)
-                .doOnError(e -> log.error("Observable Error: ", e))
-                .onErrorResumeNext(throwable -> Observable.empty());
+
+        // 异常或失败 最多重试2次
+        observable = observable.retry(2);
+        observable = observable.doOnError(e -> log.error("Observable Error: ", e))
+                .onErrorResumeNext(throwable -> {
+                    log.error("Observable Error (异常恢复): ", throwable);
+                    return Flowable.empty();
+                });
 
         observable.subscribe(item -> {
-            log.info("onNext: {}", item);
+            log.info("subscribe onNext: {}", item);
         }, e -> {
             if(e instanceof TimeoutException){
                 log.info("subscribe 超时");