diff --git a/backend-java/src/main/java/com/nanri/aiimage/config/TransientStorageProperties.java b/backend-java/src/main/java/com/nanri/aiimage/config/TransientStorageProperties.java
index 8824cf71..4b830f1c 100644
--- a/backend-java/src/main/java/com/nanri/aiimage/config/TransientStorageProperties.java
+++ b/backend-java/src/main/java/com/nanri/aiimage/config/TransientStorageProperties.java
@@ -29,7 +29,14 @@ public class TransientStorageProperties {
      */
     private long maxTotalConcurrentOperations = 0;
     private long acquirePermitTimeoutMillis = 2000;
-    private long baseRetryDelayMillis = 500;
+    /**
+     * 首次重试前的基础退避。
+     *
+     * <p>线上高频的重试诱因是 `unexpected end of stream`——那是**立即失败**（连接被 RustFS
+     * 重置后 OkHttp 读响应即报错），不是等超时，所以 500ms 基本是白等：每天上千次累计十几分钟。
+     * 降到 200ms 保留退避语义（真遇到服务端过载仍会退让），又不至于让用户等太久。
+     */
+    private long baseRetryDelayMillis = 200;
     private long maxRetryDelayMillis = 5000;
     private long retryJitterMillis = 250;
     private long failureWindowSeconds = 60;