From 11bf9221c240d3b66c0d58bd47def0eaa97cbfa6 Mon Sep 17 00:00:00 2001
From: sky22333 <sky22333sky22333@gmail.com>
Date: Sat, 16 May 2026 06:26:21 +0800
Subject: [PATCH] =?UTF-8?q?fix=20=E4=BF=AE=E5=A4=8D=E8=BF=94=E5=9B=9E?=
 =?UTF-8?q?=E4=BA=86=E8=BF=87=E6=9C=9F=E7=9A=84=E5=8C=BF=E5=90=8Dtoken?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
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---
 src/utils/cache.go      | 14 +++++++++++---
 src/utils/cache_test.go |  4 ++++
 2 files changed, 15 insertions(+), 3 deletions(-)

diff --git a/src/utils/cache.go b/src/utils/cache.go
index 488ce80..00edf06 100644
--- a/src/utils/cache.go
+++ b/src/utils/cache.go
@@ -102,10 +102,18 @@ func ExtractTTLFromResponse(responseBody []byte) time.Duration {
 	defaultTTL := 30 * time.Minute
 
 	if json.Unmarshal(responseBody, &tokenResp) == nil && tokenResp.ExpiresIn > 0 {
-		safeTTL := time.Duration(tokenResp.ExpiresIn-300) * time.Second
-		if safeTTL > 5*time.Minute {
-			return safeTTL
+		expires := time.Duration(tokenResp.ExpiresIn) * time.Second
+		skew := expires / 10
+		if skew > 5*time.Minute {
+			skew = 5 * time.Minute
 		}
+		if skew < 10*time.Second {
+			skew = 10 * time.Second
+		}
+		if expires > skew {
+			return expires - skew
+		}
+		return expires / 2
 	}
 
 	return defaultTTL
diff --git a/src/utils/cache_test.go b/src/utils/cache_test.go
index e31a81e..a5b2a8b 100644
--- a/src/utils/cache_test.go
+++ b/src/utils/cache_test.go
@@ -34,6 +34,10 @@ func TestExtractTTLFromResponse(t *testing.T) {
 		t.Fatalf("TTL = %s, want 55m", ttl)
 	}
 
+	if ttl := ExtractTTLFromResponse([]byte(`{"expires_in":300}`)); ttl != 270*time.Second {
+		t.Fatalf("short TTL = %s, want 270s", ttl)
+	}
+
 	if ttl := ExtractTTLFromResponse([]byte(`{}`)); ttl != 30*time.Minute {
 		t.Fatalf("default TTL = %s", ttl)
 	}