From f0ff511576a2222d096a32edf1083bf13aebb4af Mon Sep 17 00:00:00 2001
From: GoEdgeLab <goedgecloud@gmail.com>
Date: Sun, 12 Mar 2023 20:32:15 +0800
Subject: [PATCH] =?UTF-8?q?=E4=BC=98=E5=8C=96=E4=BB=A3=E7=A0=81?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 internal/nodes/http_writer.go | 9 ++++++---
 1 file changed, 6 insertions(+), 3 deletions(-)

diff --git a/internal/nodes/http_writer.go b/internal/nodes/http_writer.go
index c773c78..37c30f2 100644
--- a/internal/nodes/http_writer.go
+++ b/internal/nodes/http_writer.go
@@ -332,6 +332,12 @@ func (this *HTTPWriter) PrepareCache(resp *http.Response, size int64) {
 			}
 		}
 	}
+
+	// 先清理以前的
+	if this.cacheWriter != nil {
+		_ = this.cacheWriter.Discard()
+	}
+
 	cacheWriter, err := storage.OpenWriter(cacheKey, expiresAt, this.StatusCode(), this.calculateHeaderLength(), totalSize, cacheRef.MaxSizeBytes(), this.isPartial)
 	if err != nil {
 		if err == caches.ErrEntityTooLarge && addStatusHeader {
@@ -346,9 +352,6 @@ func (this *HTTPWriter) PrepareCache(resp *http.Response, size int64) {
 		}
 		return
 	}
-	if this.cacheWriter != nil {
-		_ = this.cacheWriter.Discard()
-	}
 	this.cacheWriter = cacheWriter
 
 	if this.isPartial {