's'

app/api/vip/check-by-email/route.ts

@@ -35,6 +35,8 @@ type RecoveryResult = {
   source?: string;
 };
 
+const inflightEmailChecks = new Map<string, Promise<PayjsVipEmailResult | null>>();
+
 const PAYJS_CHECK_BY_EMAIL_TIMEOUT =
   Number(process.env.PAYJSAPI_CHECK_BY_EMAIL_TIMEOUT) || 20000;
 const PAYJS_CHECK_BY_EMAIL_RETRIES =
@@ -62,6 +64,13 @@ async function checkVipByEmailFromPayjsapi(
   password: string,
   userId?: string
 ): Promise<PayjsVipEmailResult | null> {
+  const inflightKey = `${email}::${userId || ""}`;
+  const existed = inflightEmailChecks.get(inflightKey);
+  if (existed) {
+    return existed;
+  }
+
+  const task = (async () => {
   const payConfig = getPaymentConfig();
   const primaryUrl = resolvePayApiUrl(request);
   const localUrl = getLocalPayApiUrl();
@@ -125,6 +134,14 @@ async function checkVipByEmailFromPayjsapi(
     }
   }
   return null;
+  })();
+
+  inflightEmailChecks.set(inflightKey, task);
+  try {
+    return await task;
+  } finally {
+    inflightEmailChecks.delete(inflightKey);
+  }
 }
 
 async function loginPocketBaseUser(

app/api/vip/check-by-user/route.ts

@@ -15,6 +15,8 @@ type PayjsVipResult = {
   email?: string;
 };
 
+const inflightUserChecks = new Map<string, Promise<PayjsVipResult | null>>();
+
 async function fetchPayjsVipWithRetry(
   url: string,
   timeoutMs: number,
@@ -51,6 +53,12 @@ async function checkVipFromPayjsapi(
   request: NextRequest,
   userId: string
 ): Promise<PayjsVipResult | null> {
+  const existed = inflightUserChecks.get(userId);
+  if (existed) {
+    return existed;
+  }
+
+  const task = (async () => {
   try {
     const apiUrl = resolvePayApiUrl(request);
     const url = `${apiUrl}/nomadvip/check_vip?user_id=${encodeURIComponent(
@@ -95,6 +103,14 @@ async function checkVipFromPayjsapi(
     );
     return null;
   }
+  })();
+
+  inflightUserChecks.set(userId, task);
+  try {
+    return await task;
+  } finally {
+    inflightUserChecks.delete(userId);
+  }
 }
 
 export async function POST(request: NextRequest) {

app/page.tsx

@@ -15,6 +15,8 @@ const ANONYMOUS_USER_COOKIE = "nomadvip_anon_uid";
 const ANONYMOUS_USER_COOKIE_MAX_AGE = 60 * 60 * 24 * 30;
 const PAY_ORDER_COOKIE = "nomadvip_pay_order";
 const PAY_ORDER_MAX_AGE = 60 * 15;
+const EMAIL_VERIFY_TS_KEY = "emailVerifyAt";
+const EMAIL_VERIFY_COOLDOWN_MS = 60 * 1000;
 
 function getStorage(key: string): string | null {
   if (typeof window === "undefined") return null;
@@ -174,6 +176,7 @@ export default function Home() {
       savePaidType("vip");
       setUserEmail(normalizedEmail);
       saveUserName(normalizedEmail);
+      setStorage(EMAIL_VERIFY_TS_KEY, String(Date.now()));
       return true;
     },
     [savePaidType, saveUserName]
@@ -485,7 +488,10 @@ export default function Home() {
       // 校验逻辑：有本地存储（登录资料+VIP）时优先使用并校验；无身份/VIP 时点击按钮直接进入支付，不校验
       const anonymousCandidate = getStoredAnonymousUserId();
       const hadStoredUserId = !!anonymousCandidate;
-      if (anonymousCandidate) {
+      const emailVerifiedAt = Number(getStorage(EMAIL_VERIFY_TS_KEY) || "0");
+      const skipAnonymousRecover =
+        !!(getStorage("emailLinked") === "1" && Date.now() - emailVerifiedAt < EMAIL_VERIFY_COOLDOWN_MS);
+      if (anonymousCandidate && !skipAnonymousRecover) {
         const recovered = await tryRecoverByAnonymousUserId(anonymousCandidate);
         if (recovered) {
           setStorage("userId", anonymousCandidate);