{"id":86518,"date":"2026-07-28T20:16:59","date_gmt":"2026-07-28T12:16:59","guid":{"rendered":"https:\/\/www.wsisp.com\/helps\/86518.html"},"modified":"2026-07-28T20:16:59","modified_gmt":"2026-07-28T12:16:59","slug":"%e4%b8%ba%e4%bb%80%e4%b9%88%e4%b8%8a%e4%bc%a0%e8%bf%9b%e5%ba%a6%e6%9d%a1%e6%80%bb%e5%8d%a1%e5%9c%a8-99%ef%bc%9f%e5%90%8e%e7%ab%af%e6%9c%8d%e5%8a%a1%e5%99%a8%e6%ad%a3%e5%9c%a8%e7%bb%8f%e5%8e%86","status":"publish","type":"post","link":"https:\/\/www.wsisp.com\/helps\/86518.html","title":{"rendered":"\u4e3a\u4ec0\u4e48\u4e0a\u4f20\u8fdb\u5ea6\u6761\u603b\u5361\u5728 99%\uff1f\u540e\u7aef\u670d\u52a1\u5668\u6b63\u5728\u7ecf\u5386\u4e00\u573a\u201cIO\u98ce\u66b4\u201d"},"content":{"rendered":"

\"\u4e3a\u4ec0\u4e48\u4e0a\u4f20\u8fdb\u5ea6\u6761\u603b\u5361\u5728<\/p>\n

🐘 \u7406\u60f3\u4e2d\u7684\u4e0a\u4f20：\u6254\u8fdb\u53bb\u5c31\u884c<\/h4>\n

\u5728\u4ea7\u54c1\u7ecf\u7406\u548c\u7528\u6237\u7684\u773c\u91cc，\u6587\u4ef6\u4e0a\u4f20\u5c31\u662f\u628a\u672c\u5730\u7684\u6587\u4ef6\u201c\u590d\u5236\u7c98\u8d34\u201d\u5230\u670d\u52a1\u5668\u4e0a：<\/p>\n\n\u52a8\u4f5c\u4ee3\u7801\u884c\u6570 (\u7406\u60f3\u72b6\u6001)\u63cf\u8ff0<\/tr>\n\n\n\n\n
\u524d\u7aef\u9009\u62e9<\/td>\n1 \u884c<\/td>\n<input type="file"><\/td>\n<\/tr>\n
\u53d1\u8d77\u4e0a\u4f20<\/td>\n1 \u884c<\/td>\nFormData.append('file', file); axios.post(url, data)<\/td>\n<\/tr>\n
\u540e\u7aef\u63a5\u6536<\/td>\n1 \u884c<\/td>\nfile.saveTo(disk)<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

\u603b\u8ba1：3 \u884c\u3002
\n\u5982\u679c\u6587\u4ef6\u53ea\u6709 1MB（\u6bd4\u5982\u5934\u50cf），\u8fd9\u786e\u5b9e\u662f\u771f\u7684\u3002
\n\u4f46\u5f53\u8001\u677f\u8bf4：\u201c\u6211\u4eec\u8981\u652f\u6301 2GB \u7684\u89c6\u9891\u4e0a\u4f20，\u8fd8\u8981\u652f\u6301\u65ad\u7f51\u7eed\u4f20，\u8fd8\u8981\u652f\u6301\u79d2\u4f20\u201d\u65f6，\u8fd9 3 \u884c\u4ee3\u7801\u5c31\u53d8\u6210\u4e86\u4e00\u4e2a\u5e9e\u5927\u7684\u5206\u5e03\u5f0f\u6587\u4ef6\u5904\u7406\u7cfb\u7edf\u3002<\/p>\n

\n

💥 \u7b2c\u4e00\u5173：\u5927\u6587\u4ef6\u7684\u201c\u66b4\u98df\u75c7\u201d (OOM & Timeout)<\/h4>\n

\u5982\u679c\u4f60\u6562\u76f4\u63a5\u628a\u4e00\u4e2a 2GB \u7684\u6587\u4ef6\u585e\u8fdb HTTP POST \u8bf7\u6c42\u91cc\u53d1\u7ed9\u540e\u7aef：<\/p>\n

  • \u6d4f\u89c8\u5668\u5d29\u6e83： \u524d\u7aef\u8bfb\u53d6 2GB \u6587\u4ef6\u5230\u5185\u5b58，\u6d4f\u89c8\u5668\u76f4\u63a5\u5361\u6b7b\u3002<\/li>\n
  • \u7f51\u5173\u62e6\u622a： Nginx \u9ed8\u8ba4\u9650\u5236 client_max_body_size 1m\u3002\u4f60\u8fd8\u6ca1\u8fdb\u95e8\u5c31\u88ab\u4fdd\u5b89\u62e6\u4f4f\u4e86：\u201c\u5305\u88f9\u592a\u5927，\u7981\u6b62\u5165\u5185！\u201d<\/li>\n
  • \u540e\u7aef\u5185\u5b58\u6ea2\u51fa： \u5047\u8bbe\u540e\u7aef\u6536\u5230\u4e86，Java\/Python \u8bd5\u56fe\u628a\u8fd9 2GB \u52a0\u8f7d\u5230\u5185\u5b58\u91cc\u5904\u7406\u3002OOM (Out Of Memory)，\u670d\u52a1\u5b95\u673a\u3002<\/li>\n
  • \u8d85\u65f6\u65ad\u8fde： \u4f20\u4e86 10 \u5206\u949f，\u7f51\u7edc\u7a0d\u5fae\u6296\u4e86\u4e00\u4e0b，\u8fde\u63a5\u65ad\u4e86\u3002\u524d\u529f\u5c3d\u5f03，\u4ece\u5934\u518d\u6765\u3002 \u7528\u6237\u7838\u952e\u76d8\u3002<\/li>\n

    \u7ed3\u8bba： \u5927\u6587\u4ef6\u4e0d\u80fd\u201c\u541e\u201d，\u53ea\u80fd\u201c\u5207\u201d\u3002<\/p>\n

    \n

    🔪 \u7b2c\u4e8c\u5173：\u5343\u5200\u4e07\u5250 (\u5206\u7247\u4e0a\u4f20 Chunking)<\/h4>\n

    \u4e3a\u4e86\u89e3\u51b3\u201c\u592a\u5927\u201d\u7684\u95ee\u9898，\u7a0b\u5e8f\u5458\u5fc5\u987b\u5316\u8eab\u4e3a\u5916\u79d1\u533b\u751f，\u628a\u6587\u4ef6\u5207\u6210\u65e0\u6570\u4e2a\u5c0f\u5757\u3002<\/p>\n

    \u524d\u7aef\u903b\u8f91：
    \n\u5229\u7528 Blob.slice() \u65b9\u6cd5，\u628a 2GB \u7684\u6587\u4ef6\u5207\u6210 2000 \u4e2a 1MB \u7684\u5c0f\u5207\u7247\u3002
    \n\u7136\u540e\u8d77\u4e00\u4e2a\u5faa\u73af，\u53d1 2000 \u4e2a HTTP \u8bf7\u6c42：<\/p>\n

      \n
    • \u201c\u8fd9\u662f\u7b2c 1 \u7247\u201d<\/li>\n
    • \u201c\u8fd9\u662f\u7b2c 2 \u7247\u201d<\/li>\n
    • \u2026<\/li>\n<\/ul>\n

      \u540e\u7aef\u903b\u8f91：
      \n\u540e\u7aef\u53d8\u6210\u4e86\u6536\u5e9f\u54c1\u7ad9\u3002
      \n\u6211\u4e0d\u5b58\u5b8c\u6574\u6587\u4ef6\u4e86，\u6211\u5148\u5728\u4e00\u4e2a\u4e34\u65f6\u76ee\u5f55\u91cc\u5806\u653e\u8fd9 2000 \u4e2a\u788e\u7247\u6587\u4ef6：file_abc_part_1, file_abc_part_2\u2026<\/p>\n

      \u4ee3\u7801\u5c71\u7684\u4ee3\u4ef7：<\/p>\n

        \n
      • \u4f60\u8981\u7ba1\u7406\u5207\u7247\u987a\u5e8f\u3002<\/li>\n
      • \u4f60\u8981\u5904\u7406\u5e76\u53d1\u4e0a\u4f20（\u6d4f\u89c8\u5668\u9650\u5236\u540c\u57df\u540d\u53ea\u80fd\u6709 6 \u4e2a TCP \u8fde\u63a5，\u4f60\u5f97\u5199\u4e2a\u961f\u5217）\u3002<\/li>\n
      • \u4f60\u8981\u5904\u7406\u5931\u8d25\u91cd\u8bd5（\u7b2c 500 \u7247\u4f20\u5931\u8d25\u4e86，\u53ea\u80fd\u91cd\u4f20\u8fd9\u4e00\u7247，\u4e0d\u80fd\u91cd\u4f20\u6574\u4e2a\u6587\u4ef6）\u3002<\/li>\n<\/ul>\n
        \n

        🧩 \u7b2c\u4e09\u5173：\u62fc\u56fe\u5730\u72f1 (Merge)<\/h4>\n

        \u6240\u6709\u5207\u7247\u90fd\u4f20\u5b8c\u4e86，\u6587\u4ef6\u8fd8\u5728\u670d\u52a1\u5668\u7684\u4e34\u65f6\u76ee\u5f55\u91cc\u8eba\u7740，\u662f\u6563\u7684\u3002
        \n\u524d\u7aef\u53d1\u6765\u4e00\u4e2a\u6307\u4ee4：\u201c\u4f20\u5b8c\u4e86，\u5408\u5e76\u5427！\u201d<\/p>\n

        \u540e\u7aef\u5669\u68a6\u5f00\u59cb：<\/p>\n

      • IO \u98ce\u66b4： \u4f60\u7684\u4ee3\u7801\u8981\u6253\u5f00 2000 \u4e2a\u5c0f\u6587\u4ef6，\u8bfb\u53d6\u5185\u5bb9，\u5199\u5165\u5230\u4e00\u4e2a\u5927\u6587\u4ef6\u91cc\u3002\u8fd9\u65f6\u5019\u78c1\u76d8 IO \u76f4\u63a5\u98d9\u5347，\u670d\u52a1\u5668\u5361\u987f\u3002<\/li>\n
      • \u6587\u4ef6\u9501： \u4e07\u4e00\u7528\u6237\u624b\u8d31\u70b9\u4e86\u4e24\u6b21\u201c\u5408\u5e76\u201d，\u4f60\u542f\u52a8\u4e86\u4e24\u4e2a\u7ebf\u7a0b\u540c\u65f6\u53bb\u5199\u540c\u4e00\u4e2a\u6587\u4ef6，\u6587\u4ef6\u5185\u5bb9\u5c31\u4e71\u5957\u4e86\u3002<\/li>\n
      • \u78c1\u76d8\u7a7a\u95f4\u4e0d\u8db3： \u4f60\u5408\u5e76\u65f6，\u78c1\u76d8\u4e0a\u540c\u65f6\u5b58\u5728\u201c2GB \u7684\u788e\u7247\u201d\u548c\u201c\u6b63\u5728\u751f\u6210\u7684 2GB \u5927\u6587\u4ef6\u201d\u3002\u4f60\u9700\u8981 2 \u500d \u7684\u78c1\u76d8\u7a7a\u95f4\u3002<\/li>\n
      • \u6821\u9a8c (MD5)： \u4e07\u4e00\u7b2c 1999 \u4e2a\u788e\u7247\u5728\u4f20\u8f93\u4e2d\u635f\u574f\u4e86\u4e00\u4e2a\u6bd4\u7279？\u5408\u5e76\u51fa\u6765\u7684\u89c6\u9891\u5c31\u662f\u574f\u7684\u3002\u4f60\u5fc5\u987b\u5728\u5408\u5e76\u540e\u8ba1\u7b97\u5168\u6587\u4ef6\u7684 MD5\u2014\u2014\u8fd9\u53c8\u662f\u4e00\u6b21\u60ca\u4eba\u7684 CPU \u548c IO \u6d88\u8017\u3002<\/li>\n
        \n

        \u23f8\ufe0f \u7b2c\u56db\u5173：\u65ad\u70b9\u7eed\u4f20\u7684\u201c\u8bb0\u5fc6\u672f\u201d<\/h4>\n

        \u7528\u6237\u4f20\u5230 50%（\u7b2c 1000 \u7247），\u7f51\u65ad\u4e86\u3002
        \n\u534a\u5c0f\u65f6\u540e，\u7f51\u597d\u4e86\u3002\u7528\u6237\u91cd\u65b0\u9009\u62e9\u4e86\u6587\u4ef6\u3002<\/p>\n

        \u5982\u679c\u4ece\u5934\u4f20，\u7528\u6237\u4f1a\u6740\u4eba\u3002
        \n\u7cfb\u7edf\u5fc5\u987b\u6709\u8bb0\u5fc6\u3002<\/p>\n

        \u4ea4\u4e92\u6d41\u7a0b：<\/p>\n

      • \u63e1\u624b (Pre-check)： \u4e0a\u4f20\u524d，\u524d\u7aef\u5148\u7b97\u4e00\u4e2a\u6587\u4ef6\u7684\u201c\u6307\u7eb9\u201d（MD5），\u95ee\u540e\u7aef：\u201c\u5927\u54e5，\u8fd9\u4e2a\u6587\u4ef6\u6211\u4f20\u8fc7\u5417？\u201d<\/li>\n
      • \u540e\u7aef\u67e5\u8be2： \u540e\u7aef\u53bb\u4e34\u65f6\u76ee\u5f55\u770b\u4e00\u773c：\u201c\u54e6，\u8fd9\u4e2a\u6307\u7eb9\u7684\u6587\u4ef6，\u6211\u5df2\u7ecf\u6536\u5230\u4e86 1-1000 \u7247，\u4f60\u4ece 1001 \u7247\u5f00\u59cb\u4f20\u5427\u3002\u201d<\/li>\n
      • \u7eed\u4f20： \u524d\u7aef\u8df3\u8fc7\u524d 1000 \u7247，\u7ee7\u7eed\u53d1\u9001\u3002<\/li>\n

        \u5751\u70b9：
        \n\u524d\u7aef\u7b97 MD5 \u5f88\u6162！
        \n\u8ba9\u6d4f\u89c8\u5668\u53bb\u8bfb 2GB \u6587\u4ef6\u7b97\u54c8\u5e0c\u503c，\u9875\u9762\u4f1a\u5361\u6b7b\u3002
        \n\u4f18\u5316\u6280\u5de7： \u62bd\u6837\u8ba1\u7b97（\u53ea\u7b97\u6587\u4ef6\u5934\u3001\u6587\u4ef6\u5c3e\u548c\u4e2d\u95f4\u51e0\u5757），\u727a\u7272\u4e00\u70b9\u51c6\u786e\u6027\u6362\u53d6\u901f\u5ea6\u3002<\/p>\n

        \n

        \u26a1 \u7b2c\u4e94\u5173：\u79d2\u4f20 (Instant Upload) \u7684\u9b54\u672f<\/h4>\n

        \u8fd9\u662f\u8ba9\u7528\u6237\u89c9\u5f97\u201c\u54c7，\u4f60\u4eec\u7f51\u901f\u597d\u5feb\u201d\u7684\u8bc8\u9a97\u529f\u80fd\u3002<\/p>\n

        \u573a\u666f：
        \n\u7528\u6237 A \u4e0a\u4f20\u4e86\u4e00\u90e8\u7535\u5f71\u300a\u590d\u4ec7\u8005\u8054\u76df\u300b，\u4f20\u4e86 1 \u5c0f\u65f6\u3002\u670d\u52a1\u5668\u4e0a\u6709\u4e86\u8fd9\u4efd\u6587\u4ef6\u3002
        \n\u7528\u6237 B \u4e5f\u4e0a\u4f20\u540c\u4e00\u90e8\u7535\u5f71\u3002
        \n\u524d\u7aef\u4e00\u7b97 MD5，\u53d1\u7ed9\u540e\u7aef\u3002
        \n\u540e\u7aef\u4e00\u770b：\u201c\u563f！\u8fd9\u6587\u4ef6\u6211\u5e93\u91cc\u6709\u554a！\u201d
        \n\u540e\u7aef\u76f4\u63a5\u8fd4\u56de：\u201c\u4e0a\u4f20\u6210\u529f！\u201d（\u8017\u65f6 0.1 \u79d2）\u3002<\/p>\n

        \u5b9e\u9645\u4e0a： \u7528\u6237 B \u7684\u6587\u4ef6\u6839\u672c\u6ca1\u4e0a\u4f20，\u540e\u7aef\u53ea\u662f\u5728\u6570\u636e\u5e93\u91cc\u7ed9\u7528\u6237 B \u7684\u6587\u4ef6\u5217\u8868\u91cc，\u52a0\u4e86\u4e00\u6761\u5f15\u7528 (Link)，\u6307\u5411\u4e86\u7528\u6237 A \u4f20\u7684\u90a3\u4efd\u6587\u4ef6\u3002<\/p>\n

        \u98ce\u9669：
        \n\u54c8\u5e0c\u78b0\u649e (Hash Collision)\u3002
        \n\u867d\u7136\u6982\u7387\u6781\u4f4e，\u4f46\u7406\u8bba\u4e0a\u53ef\u80fd\u5b58\u5728\u4e24\u4e2a\u4e0d\u540c\u7684\u6587\u4ef6 MD5 \u4e00\u6837\u3002
        \n\u5982\u679c\u53d1\u751f\u4e86，\u7528\u6237 B \u4e0a\u4f20\u4e86\u81ea\u5df1\u7684\u81ea\u62cd，\u7ed3\u679c\u4e0b\u8f7d\u4e0b\u6765\u53d8\u6210\u4e86\u300a\u590d\u4ec7\u8005\u8054\u76df\u300b\u3002
        \n\u4e3a\u4e86\u9632\u8fd9\u4e2a，\u901a\u5e38\u8981\u7528 MD5 + SHA1 \u53cc\u91cd\u6821\u9a8c，\u6216\u8005\u5bf9\u6bd4\u6587\u4ef6\u957f\u5ea6\u3002<\/p>\n

        \n

        🧹 \u7b2c\u516d\u5173：\u5783\u573e\u6e05\u7406 (GC)<\/h4>\n

        \u573a\u666f：
        \n\u6bcf\u5929\u6709 1000 \u4e2a\u4eba\u4e0a\u4f20\u6587\u4ef6\u3002
        \n\u5176\u4e2d 100 \u4e2a\u4eba\u4f20\u4e86\u4e00\u534a\u5c31\u8d70\u4e86，\u518d\u4e5f\u6ca1\u56de\u6765\u3002
        \n\u670d\u52a1\u5668\u7684\u4e34\u65f6\u76ee\u5f55\u91cc\u7559\u4e0b\u4e86\u51e0\u5341\u4e07\u4e2a\u6c38\u8fdc\u4e0d\u4f1a\u88ab\u5408\u5e76\u7684\u788e\u7247\u6587\u4ef6\u3002
        \n\u968f\u7740\u65f6\u95f4\u63a8\u79fb，\u78c1\u76d8\u7206\u6ee1\u3002<\/p>\n

        \u9632\u5fa1\u4ee3\u7801：
        \n\u4f60\u5fc5\u987b\u5199\u4e00\u4e2a\u5b9a\u65f6\u4efb\u52a1（Cron Job），\u6bcf\u5929\u51cc\u6668\u722c\u8d77\u6765\u5de1\u903b：
        \n\u201c\u8fd9\u4e9b\u788e\u7247\u662f\u8c01\u7684？\u90fd\u4e09\u5929\u4e86\u8fd8\u6ca1\u5408\u5e76？\u5220\u4e86！\u201d<\/p>\n

        \n

        💡 \u603b\u7ed3：\u8fd9\u4e0d\u662f\u4e0a\u4f20，\u8fd9\u662f\u5206\u5e03\u5f0f\u5de5\u7a0b<\/h4>\n

        \u73b0\u5728\u4f60\u660e\u767d\u4e86，\u90a3\u4e2a\u7b80\u5355\u7684 <input type="file"> \u80cc\u540e，\u5176\u5b9e\u8dd1\u7740\u4e00\u4e2a\u590d\u6742\u7684\u5206\u5e03\u5f0f\u7cfb\u7edf：<\/p>\n

      • \u5207\u7247（\u4e3a\u4e86\u907f\u5f00\u5185\u5b58\u548c\u7f51\u7edc\u9650\u5236）\u3002<\/li>\n
      • \u5e76\u53d1（\u4e3a\u4e86\u901f\u5ea6）\u3002<\/li>\n
      • \u54c8\u5e0c\u8ba1\u7b97（\u4e3a\u4e86\u79d2\u4f20\u548c\u6821\u9a8c）\u3002<\/li>\n
      • \u72b6\u6001\u673a（\u4e3a\u4e86\u7eed\u4f20）\u3002<\/li>\n
      • IO \u8c03\u5ea6（\u4e3a\u4e86\u5408\u5e76）\u3002<\/li>\n
      • \u5783\u573e\u56de\u6536（\u4e3a\u4e86\u78c1\u76d8\u6e05\u6d01）\u3002<\/li>\n

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