{"id":86896,"date":"2020-04-21T17:41:27","date_gmt":"2020-04-21T09:41:27","guid":{"rendered":"http:\/\/4563.org\/?p=86896"},"modified":"2020-04-21T17:41:27","modified_gmt":"2020-04-21T09:41:27","slug":"js-%e5%8f%aa%e6%9c%89%e4%b8%80%e4%b8%aa%e7%ba%bf%e7%a8%8b%ef%bc%8c%e9%82%a3%e4%b9%88%e7%94%a8%e4%ba%86%e5%bc%82%e6%ad%a5%ef%bc%8c%e7%ad%89%e5%be%85-io-%e7%9a%84%e6%97%b6%e5%80%99%ef%bc%8c%e4%b8%8d","status":"publish","type":"post","link":"http:\/\/4563.org\/?p=86896","title":{"rendered":"js \u53ea\u6709\u4e00\u4e2a\u7ebf\u7a0b\uff0c\u90a3\u4e48\u7528\u4e86\u5f02\u6b65\uff0c\u7b49\u5f85 io \u7684\u65f6\u5019\uff0c\u4e0d\u7528\u6d88\u8017\u7ebf\u7a0b\u5417\uff1f\u6ca1\u6709\u4e00\u4e2a\u5b88\u62a4\u7ebf\u7a0b\u53bb\u7b49\u5f85 io \u5417"},"content":{"rendered":"
\n
\n
\n

js \u53ea\u6709\u4e00\u4e2a\u7ebf\u7a0b\uff0c\u90a3\u4e48\u7528\u4e86\u5f02\u6b65\uff0c\u7b49\u5f85 io \u7684\u65f6\u5019\uff0c\u4e0d\u7528\u6d88\u8017\u7ebf\u7a0b\u5417\uff1f\u6ca1\u6709\u4e00\u4e2a\u5b88\u62a4\u7ebf\u7a0b\u53bb\u7b49\u5f85 io \u5417 <\/h1>\n

<\/p>\n

\n
\u8cc7\u6df1\u5927\u4f6c : find456789 <\/span> <\/i> 11<\/span> <\/div>\n
<\/div>\n<\/p><\/div>\n<\/p><\/div>\n<\/p><\/div>\n
<\/p>\n

\u770b\u5230\u7f51\u4e0a\u8bf4 js \u53ea\u6709\u4e00\u4e2a\u7ebf\u7a0b<\/p>\n

\u90a3\u4e48\u6211\u7406\u89e3 js \u540c\u65f6\u53ea\u80fd\u505a\u4e00\u4ef6\u4e8b<\/p>\n

\u5982\u679c\u8fd9\u4e2a\u7ebf\u7a0b \u540c\u6b65\u53bb\u8bf7\u6c42\u4e00\u4e2a\u56fe\u7247\uff0c \u5982\u679c\u7f51\u7edc\u5f88\u5361\uff0c \u90a3\u4e48\u5176\u4ed6\u5730\u65b9\u5c31\u4f1a\u5361\u4f4f\uff0c \u56e0\u4e3a\u6ca1\u6709\u7ebf\u7a0b\u53bb\u5904\u7406\u5176\u4ed6\u5730\u65b9<\/p>\n

\u53ef\u662f\u6211\u770b\u5230\u7f51\u4e0a\u8bf4\uff0c \u7528\u6765\u5f02\u6b65\u5c31\u53ef\u4ee5\u89e3\u51b3\u8fd9\u4e2a\u95ee\u9898<\/p>\n

\u6211\u7684\u7406\u89e3\u662f\uff1a \u7528\u4e86\u5f02\u6b65\u540e\uff0c \u53d1\u8d77\u8bf7\u6c42\u540e\uff0c\u8fd9\u4e2a\u7ebf\u7a0b\u7ee7\u7eed\u5904\u7406 ui\uff0c\u5904\u7406\u5176\u4ed6\u4e8b\u60c5 \uff0c \u7b49 io \u8bf7\u6c42\u8fd4\u56de\u7ed3\u679c\u4ee5\u540e\uff0c\u7ebf\u7a0b\u5c31\u5207\u6362\u5230\u539f\u6765\u7684\u5730\u65b9\uff0c\u5bf9 io \u7ed3\u679c\u8fdb\u884c\u5904\u7406<\/p>\n

\u53ef\u662f\uff0cjs \u600e\u4e48\u77e5\u9053 io \u8bf7\u6c42\u5b8c\u6bd5 \u4e86\u5462\uff1f \u96be\u9053\u4e0d\u7528\u8d77\u4e00\u4e2a\u65b0\u7ebf\u7a0b\uff0c\u4e13\u95e8\u8bf7\u6c42 io \u5417\uff1f \u6216\u8005\u76d1\u542c io \u8bf7\u6c42\u72b6\u6001\u5417<\/p>\n

\u8c01\u544a\u8bc9 js \u8fd9\u4e2a io \u8bf7\u6c42\u5b8c\u6bd5\u4e86\u5462\uff1f \u64cd\u4f5c\u7cfb\u7edf\u5417\uff1f \u6216\u8005 \u5176\u4ed6\u7684<\/p>\n

\u8c22\u8c22<\/p>\n<\/p><\/div>\n

\u5927\u4f6c\u6709\u8a71\u8aaa<\/b> (7<\/span>) <\/div>\n
<\/div>\n<\/p><\/div>\n<\/p><\/div>\n
    \n
  • \n
    \n
    \n
    \u8cc7\u6df1\u5927\u4f6c : 754181906aaa <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    js \u7684\u5355\u7ebf\u7a0b\u662f\u5bf9\u5f00\u53d1\u8005\u800c\u8a00\u7684\uff0c\u5c31\u662f\u4f60\u7684\u4ee3\u7801\u8fd0\u884c\u5728\u5355\u7ebf\u7a0b\u4e0a\uff0c \u4f46\u662f\u6d4f\u89c8\u5668\u5e76\u4e0d\u662f\u5355\u7ebf\u7a0b\uff0c \u50cf v8\uff0c \u78c1\u76d8 io \u5c31\u662f\u7528\u7684\u7ebf\u7a0b\u6c60\uff0c \u7f51\u7edc io \u662f epoll \u3002 <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
    \n
    \u8cc7\u6df1\u5927\u4f6c : shintendo <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    js \u8c03\u7528\u6d4f\u89c8\u5668\u7684 api \u53d1\u9001\u8bf7\u6c42\uff0c\u5177\u4f53\u7684\u53d1\u9001\u548c\u63a5\u6536\u662f\u6d4f\u89c8\u5668\u7684\u4e8b\u60c5 <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
    \n
    \u8cc7\u6df1\u5927\u4f6c : Mozshaw <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    \u8fd9\u4e9b\u662f Web API\uff0cio \u8bf7\u6c42\u5b8c\u6bd5\u540e\u4f1a\u628a\u56de\u8c03\u653e\u5230 Task Queue \u91cc\u3002\u7136\u540e JS \u4f1a\u901a\u8fc7 event loop \u53bb\u5faa\u73af\u7684\u68c0\u6d4b\u8c03\u7528\u6808\u662f\u5426\u662f\u7a7a\u7684\uff0c\u5f53\u8c03\u7528\u6808\u7a7a\u4e86\u4e4b\u540e\u5c31\u4f1a\u4ece\u961f\u5217\u91cc\u53d6\u51fa\u56de\u8c03\uff0c\u538b\u5165\u8c03\u7528\u6808\u6267\u884c <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
    \n
    \u4e3b<\/span> \u8cc7\u6df1\u5927\u4f6c : find456789 <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    @Mozshaw
    @shintendo
    @754181906aaa <\/p>\n

    ========<\/p>\n

    \u8c22\u8c22<\/p>\n

    \u6211\u7684\u65b0\u7406\u89e3\u5982\u4e0b\uff1a<\/p>\n

    \u5f53\u6211\u7528\u6d4f\u89c8\u5668\u6253\u5f00\u4e00\u4e2a\u7f51\u9875\u540e\uff0c \u6d4f\u89c8\u5668\u5f15\u64ce\u4f1a\u628a\u4ee3\u7801\u634b\u4e00\u634b\uff0c\u628a\u4ee3\u7801\u91cc\u6240\u6709\u65b9\u6cd5 \u653e\u5165 \u5806\u6808\u91cc\uff0c\u4e5f\u5c31\u662f task Queue<\/p>\n

    js \u7ebf\u7a0b\u5c31\u50cf\u4e00\u4e2a\u5de5\u4eba\uff0c<\/p>\n

    \u800c task Queue \u5c31\u662f\u5de5\u4f5c\u5217\u8868\uff0c<\/p>\n

    \u5de5\u4eba\u5f00\u59cb\u5de5\u4f5c\u540e\uff0c\u5c31\u53bb task Queue \u9886\u53d6\u4e00\u4efd\u5de5\u4f5c\uff0c\u5148\u9886\u53d6\u4e0a\u9762\u7684\u4efb\u52a1\uff08\u5148\u8fdb\u540e\u51fa\uff0c \u540e\u8fdb\u5148\u51fa\uff0c\u5148\u5b89\u6392\u7684\u4efb\u52a1\u540e\u505a\uff0c\u540e\u5b89\u6392\u7684\u4efb\u52a1\u5148\u505a\uff09<\/p>\n

    \u5de5\u4eba\u505a\u5b8c\u4e00\u4efd\u5de5\u4f5c\u540e\uff0c\u8fd9\u4e2a\u5de5\u4f5c\u5c31\u4ece task Queue \u91cc\u5220\u9664\u4e86\uff08\u4ece\u5806\u6808\u91cc\u5f39\u51fa\u4e86\uff09<\/p>\n

    \u7136\u540e\u5de5\u4eba\u7ee7\u7eed\u9886\u53d6\u4e0b\u4e00\u4efd\u5de5\u4f5c<\/p>\n

    \u5176\u4e2d\u6709\u4e00\u4efd\u5de5\u4f5c\u662f\uff0c\u53d1\u8d77\u4e00\u4e2a\u5f02\u6b65 io \u64cd\u4f5c\uff0c\u5de5\u4eba\u9886\u53d6\u4e86\uff0c\u5e76\u6267\u884c\u4e86\u8fd9\u4e2a api\uff0c\u5de5\u4eba\u5b8c\u6210\u4e86\u53d1\u8d77\u8bf7\u6c42\u7684\u5de5\u4f5c\uff0c\u4e8e\u662f\u7ee7\u7eed\u9886\u53d6\u4e0b\u4e00\u4efd\u5de5\u4f5c<\/p>\n

    \u5de5\u4eba\u6267\u884c\u7684\u90a3\u4e2a api \u5c31\u662f\u8ba9\u6d4f\u89c8\u5668\u53bb\u8bf7\u6c42\u6570\u636e\uff0c\u8fd9\u65f6\u5019\u6d4f\u89c8\u5668\u5c31\u53bb\u8bf7\u6c42\u6570\u636e\uff0c<\/p>\n

    \u5728\u6d4f\u89c8\u5668\u8bf7\u6c42\u6570\u636e\u7684\u8fc7\u7a0b\u4e2d\uff0c \u5de5\u4eba\u8fd8\u662f\u7ee7\u7eed\u9886\u4efb\u52a1\u3001\u505a\u4efb\u52a1\uff0c\u6bcf\u505a\u5b8c\u4e00\u4e2a\u4efb\u52a1\uff0c\u6d4f\u89c8\u5668\u5c31\u4f1a\u628a\u8fd9\u4e2a\u4efb\u52a1\u4ece task Queue \u91cc\u5220\u6389<\/p>\n

    \u4e00\u6bb5\u65f6\u95f4\u540e\uff08\u53ef\u80fd\u51e0\u5341\u6beb\u79d2\uff09\uff0c\u6d4f\u89c8\u5668\u5f97\u5230\u4e86 io \u6570\u636e\uff0c\u7136\u540e\u628a io \u6570\u636e\uff0c\u548c\u5904\u7406 io \u6570\u636e\u7684\u4ee3\u7801\u653e\u5728 task Queue \u5217\u8868\u7684\u6700\u4e0a\u9762\uff0c \u7b49\u5f85\u5de5\u4eba\u4e0b\u4e00\u6b21\u6765\u9886\u53d6\u8fd9\u4e2a\u4efb\u52a1<\/p>\n

    \u540e\u6765\uff0c\u5de5\u4eba\u505a\u5b8c\u4e86\u624b\u4e0a\u7684\u5de5\u4f5c\uff0c\u53c8\u6765\u9886\u53d6\u65b0\u5de5\u4f5c\uff0c \u5c31\u9886\u53d6\u5230\u4e86\u8fd9\u4e2a \u5e26\u6709 io \u6570\u636e\u7684\u4efb\u52a1\uff0c \u7136\u540e \u5de5\u4eba\u5c31\u6309\u7167\u4ee3\u7801\u5bf9\u8fd9\u4e2a io \u6570\u636e\u8fdb\u884c\u5904\u7406\u3001\u52a0\u5de5<\/p>\n

    \u8bf7\u95ee\u6211\u7684\u7406\u89e3\u5bf9\u5417 <\/div>\n<\/p><\/div>\n<\/li>\n

  • \n
    \n
    \n
    \u8cc7\u6df1\u5927\u4f6c : m0cha <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    @find456789 \u8fd9\u5b66\u671f\u521a\u4e0a\u4e86\u8fd9\u95e8\u8bfe\uff0c\u8fd9\u7406\u89e3\u662f\u5bf9\u7684\uff0c\u6240\u8c13\u7684 nodejs \u5355\u7ebf\u7a0b\u5c31\u662f\u6307\uff0c\u8fd9\u4e2a\u5de5\u4eba\u9886\u4efb\u52a1\u548c\u505a\u4efb\u52a1\u662f\u5355\u7ebf\u7a0b\u7684\uff0c\u81f3\u4e8e\u6d4f\u89c8\u5668 wjiqio \u662f\u7531\u53e6\u5916\u7684\u7ebf\u7a0b\u5b8c\u6210\u7684 <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
    \n
    \u8cc7\u6df1\u5927\u4f6c : m0cha <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    @m0cha \u6d4f\u89c8\u5668\u5b8c\u6210 io <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
    \n
    \u8cc7\u6df1\u5927\u4f6c : fengfuliu <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    \u5728\u6267\u884c\u4ee3\u7801\u8fc7\u7a0b\u4e2d\uff0c\u5982\u679c\u9047\u5230\u4e00\u4e9b\u5f02\u6b65\u4ee3\u7801(\u6bd4\u5982 setTimeout,ajax,promise.then \u4ee5\u53ca\u7528\u6237\u70b9\u51fb\u7b49\u64cd\u4f5c),\u90a3\u4e48\u6d4f\u89c8\u5668\u5c31\u4f1a\u5c06\u8fd9\u4e9b\u4ee3\u7801\u653e\u5230\u53e6\u4e00\u4e2a\u7ebf\u7a0b(\u5728\u8fd9\u91cc\u6211\u4eec\u53eb\u505a\u5e55\u540e\u7ebf\u7a0b\uff0c\u8fd9\u4e2a\u7ebf\u7a0b\u53ef\u80fd\u5b58\u5728\u4e8e\u6d4f\u89c8\u5668\u6216 js \u5f15\u64ce\u5185\uff0c\u4e0e\u4e3b\u7ebf\u7a0b\u662f\u5206\u5f00\u7684\uff0c\u5904\u7406\u6587\u4ef6\u8bfb\u53d6\u3001\u7f51\u7edc\u8bf7\u6c42\u7b49\u5f02\u6b65\u4e8b\u4ef6\u3002)\u4e2d\u53bb\u6267\u884c\uff0c\u5728\u524d\u7aef\u7531\u6d4f\u89c8\u5668\u5e95\u5c42\u6267\u884c\uff0c\u5728 node \u7aef\u7531 libuv \u6267\u884c\uff0c\u8fd9\u4e2a\u7ebf\u7a0b\u7684\u6267\u884c\u4e0d\u963b\u585e\u4e3b\u7ebf\u7a0b\u7684\u6267\u884c\uff0c\u4e3b\u7ebf\u7a0b\u7ee7\u7eed\u6267\u884c\u6808\u4e2d\u5269\u4f59\u7684\u4ee3\u7801\u3002 <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n","protected":false},"excerpt":{"rendered":"

    js \u53ea\u6709\u4e00\u4e2a\u7ebf\u7a0b\uff0c\u90a3\u4e48\u7528\u4e86\u5f02\u6b65\uff0c…<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[],"tags":[],"_links":{"self":[{"href":"http:\/\/4563.org\/index.php?rest_route=\/wp\/v2\/posts\/86896"}],"collection":[{"href":"http:\/\/4563.org\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/4563.org\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/4563.org\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/4563.org\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=86896"}],"version-history":[{"count":0,"href":"http:\/\/4563.org\/index.php?rest_route=\/wp\/v2\/posts\/86896\/revisions"}],"wp:attachment":[{"href":"http:\/\/4563.org\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=86896"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/4563.org\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=86896"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/4563.org\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=86896"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}