From 8f186bc8f7ac724f6da0639caa89d7578cd7d250 Mon Sep 17 00:00:00 2001
From: guke <guke@autohome.com.cn>
Date: Thu, 30 Jul 2026 16:44:38 +0800
Subject: [PATCH] =?UTF-8?q?docs(sms):=20.env.example=20=E5=8A=A0=20SMS=5FF?=
 =?UTF-8?q?ALLBACK=5FPROVIDER=20=E8=AF=B4=E6=98=8E?=
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Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
---
 .env.example | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/.env.example b/.env.example
index b77fd01..8656841 100644
--- a/.env.example
+++ b/.env.example
@@ -45,6 +45,9 @@ SMS_SEND_INTERVAL_SEC=60
 # chuanglan:创蓝云智(253)模板短信,本服务生成码、创蓝只下发、本地校验(Mode B,与极光同);缺凭证 503。
 #            用 YZM 前缀验证码账号;服务器出网 IP 需在创蓝控制台加白名单(否则 117)。见 docs/integrations/chuanglan/tpl-send.md。
 SMS_PROVIDER=jiguang
+# 极光→创蓝 容灾:主 provider(SMS_PROVIDER)供应商不可用(503)时转投的备。
+# 空=关闭 fallback(默认);生产设 chuanglan 开启极光主、创蓝备;置空即秒回退。
+SMS_FALLBACK_PROVIDER=
 ALIYUN_SMS_ACCESS_KEY_ID=
 ALIYUN_SMS_ACCESS_KEY_SECRET=
 ALIYUN_SMS_SIGN_NAME=