From 8d94fe3ef5cd59f137eed61868486305da08744c Mon Sep 17 00:00:00 2001
From: GoEdgeLab <goedgecloud@gmail.com>
Date: Wed, 1 Dec 2021 21:20:42 +0800
Subject: [PATCH] =?UTF-8?q?=E6=9F=A5=E8=AF=A2=E6=BA=90=E7=AB=99=E6=97=B6?=
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---
 pkg/serverconfigs/reverse_proxy_config.go | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/pkg/serverconfigs/reverse_proxy_config.go b/pkg/serverconfigs/reverse_proxy_config.go
index 559769d..f5dcd63 100644
--- a/pkg/serverconfigs/reverse_proxy_config.go
+++ b/pkg/serverconfigs/reverse_proxy_config.go
@@ -196,8 +196,9 @@ func (this *ReverseProxyConfig) AddBackupOrigin(origin *OriginConfig) {
 
 // NextOrigin 取得下一个可用的后端服务
 func (this *ReverseProxyConfig) NextOrigin(call *shared.RequestCall) *OriginConfig {
-	this.schedulingLocker.RLock()
-	defer this.schedulingLocker.RUnlock()
+	// 这里不能使用RLock/RUnlock，因为在NextOrigin()方法中可能会对调度对象动态调整
+	this.schedulingLocker.Lock()
+	defer this.schedulingLocker.Unlock()
 
 	if len(this.schedulingGroupMap) == 0 {
 		return nil