NestJS中如何在genReqId函数内注入CacheManager

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Single-line command: npm install @nestjs/cache-manager

Multi-line code block (JavaScript example):

function genReqId(req) {
  const reqId = req.headers.req_id || uuid();
  // Cache logic would go here
  return reqId;
}

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ReqId is essential for tracing the full lifecycle of individual requests in distributed applications.

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