{"id":198723,"date":"2020-11-12T23:17:29","date_gmt":"2020-11-12T15:17:29","guid":{"rendered":"http:\/\/4563.org\/?p=198723"},"modified":"2020-11-12T23:17:29","modified_gmt":"2020-11-12T15:17:29","slug":"django-python-manage-py-runserver-%e5%90%af%e5%8a%a8%e6%b5%8b%e8%af%95%e6%9c%8d%e5%8a%a1-%e6%af%8f%e6%ac%a1%e6%96%b0%e7%9a%84-http-%e8%af%b7%e6%b1%82-%e9%83%bd%e4%bc%9a%e6%96%b0%e5%bb%ba%e4%b8%80","status":"publish","type":"post","link":"http:\/\/4563.org\/?p=198723","title":{"rendered":"django Python manage.py runserver \u542f\u52a8\u6d4b\u8bd5\u670d\u52a1, \u6bcf\u6b21\u65b0\u7684 http \u8bf7\u6c42 \u90fd\u4f1a\u65b0\u5efa\u4e00\u4e2a thread \u5904\u7406, \u4e4b\u540e\u4f1a\u81ea\u52a8\u5173\u95ed\u8fd9\u4e2a\u7ebf\u7a0b"},"content":{"rendered":"
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django Python manage.py runserver \u542f\u52a8\u6d4b\u8bd5\u670d\u52a1, \u6bcf\u6b21\u65b0\u7684 http \u8bf7\u6c42 \u90fd\u4f1a\u65b0\u5efa\u4e00\u4e2a thread \u5904\u7406, \u4e4b\u540e\u4f1a\u81ea\u52a8\u5173\u95ed\u8fd9\u4e2a\u7ebf\u7a0b <\/h1>\n

<\/p>\n

\n
\u8cc7\u6df1\u5927\u4f6c : chaleaoch <\/span> <\/i> 7<\/span> <\/div>\n
<\/div>\n<\/p><\/div>\n<\/p><\/div>\n<\/p><\/div>\n
\u662f\u8fd9\u6837\u7684\u5417?
\u5173\u95ed\u7ebf\u7a0b\u7684\u540c\u65f6, \u8d44\u6e90\u4f1a\u81ea\u52a8\u91ca\u653e,\u8b6c\u5982\u548c\u6570\u636e\u5e93\u7684\u8fde\u63a5, \u5305\u62ec Django orm \u65b0\u5efa\u7684\u8fde\u63a5\u548c\u624b\u52a8 db.connection \u521b\u5efa\u7684\u8fde\u63a5\u90fd\u4f1a\u81ea\u52a8\u91ca\u653e.<\/p>\n

\u6211\u662f\u7591\u95ee\u53e5. \u63d0\u524d\u611f\u8c22\u5927\u4f6c\u89e3\u7b54. <\/p><\/div>\n

\u5927\u4f6c\u6709\u8a71\u8aaa<\/b> (16<\/span>) <\/div>\n
<\/div>\n<\/p><\/div>\n<\/p><\/div>\n
    \n
  • \n
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    \u8cc7\u6df1\u5927\u4f6c : ltttx <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    \u662f\u7684 <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
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    \u8cc7\u6df1\u5927\u4f6c : nonduality <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    \u8fd9\u4e2a\u4e8b\u5b9e\u5bf9\u4f60\u7684\u5f00\u53d1\u6709\u4ec0\u4e48\u5f71\u54cd\u5417\uff1f <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
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    \u8cc7\u6df1\u5927\u4f6c : SjwNo1 <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    \u6d4b\u8bd5\u5e94\u8be5\u662f\u7684 <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
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    \u8cc7\u6df1\u5927\u4f6c : no1xsyzy <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    \u624b\u52a8\u8fde\u63a5\u4e0d\u4e00\u5b9a\u770b\u5177\u4f53\u5b9e\u73b0\uff0c\u4e00\u822c\u4f1a\u5305\u542b with \u8c03\u7528\u65b9\u5f0f\uff0c\u8bf7\u7528 with <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
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    \u4e3b<\/span> \u8cc7\u6df1\u5927\u4f6c : chaleaoch <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    @nonduality \u5982\u679c\u6211\u5728 view \u91cc\u9762\u521b\u5efa\u4e00\u4e2a connection \u6216\u8005 \u4ec0\u4e48\u4e1c\u897f\u800c\u6ca1\u6709\u91ca\u653e,\u5982\u679c\u7ebf\u7a0b\u6ca1\u6709\u5173\u95ed, \u90a3\u4e48 \u8fd9\u4e2a connection \u4f1a\u4e00\u76f4\u5b58\u5728. \u6211\u4e2a\u4eba\u7406\u89e3\u662f\u8fd9\u6837\u7684.
    \u5f53\u7136\u540e\u6765\u6211\u624d\u77e5\u9053 django \u6709\u4e00\u4e2a\u4fe1\u53f7 \u4e13\u95e8\u5904\u7406\u8fd9\u79cd\u60c5\u51b5,\u4f46\u662f\u8fd8\u662f\u4f1a\u6709\u5176\u4ed6\u5f71\u54cd. \u8b6c\u5982 \u5168\u5c40\u53d8\u91cf? \u4e4b\u7c7b. <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
    \n
    \u4e3b<\/span> \u8cc7\u6df1\u5927\u4f6c : chaleaoch <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    @nonduality \u53e6\u5916\u672c\u4eba\u4e00\u76f4\u597d\u5947, \u4e00\u4e2a HTTP \u8bf7\u6c42\u8fc7\u6765 gunicorn \u6216\u8005 gevent \u662f\u5982\u4f55\u505a\u547d\u540d\u7a7a\u95f4\u9694\u79bb\u7684. \u4e00\u76f4\u6ca1\u65f6\u95f4\u7cbe\u529b\u770b\u4ee3\u7801. \u5c31\u597d\u5947\u5148\u95ee\u4e00\u5634. <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
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    \u8cc7\u6df1\u5927\u4f6c : freakxx <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    @chaleaoch #5 <\/p>\n

    \u624b\u52a8\u521b\u5efa\u7684\u8fde\u63a5\u9700\u8981\u81ea\u5df1\u7ba1\u7406\uff0c<\/p>\n

    \u6e90\u7801\u4e00\u822c\u662f\u4e24\u79cd\u5199\u6cd5
    \u7528 with \u6765\u63a7\u5236\u9000\u51fa\u65f6\u5019 close
    \u6216\u8005\u7ed3\u675f\u6267\u884c cursor.close() <\/div>\n<\/p><\/div>\n<\/li>\n

  • \n
    \n
    \n
    \u4e3b<\/span> \u8cc7\u6df1\u5927\u4f6c : chaleaoch <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    @freakxx \u6211\u7684\u95ee\u9898\u5c31\u5728\u4e8e\u6b64, \u6211\u5728\u60f3\u5982\u679c\u7ebf\u7a0b\u90fd\u9000\u51fa\u4e86 \u90a3\u8fd9\u4e2a\u8fde\u63a5\u662f\u4e0d\u662f\u4e5f\u5c31\u65ad\u4e86? <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
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    \u8cc7\u6df1\u5927\u4f6c : freakxx <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    @chaleaoch #8 <\/p>\n

    \u662f\u7684\uff0c\u8fde\u63a5\u4f1a\u65ad\uff0c\u4f46\u4f1a\u6709\u60c5\u51b5\u5c31\u662f\u70b8\u88c2\u7684\u60c5\u51b5\u4e0b\uff0c\u6267\u884c\u4e0d\u5230<\/p>\n

    \u4e5f\u5c31\u662f\u8bf4\uff0c\u4f60\u6709\u4e00\u4e2a http \u8bf7\u6c42\uff0c\u6b63\u5e38\u6765\u5230\u7ed3\u675f\u7684\u65f6\u5019\uff0c\u5b83\u4f1a\u5904\u7406
    \u4f46\u662f\u5047\u8bbe\u4f60\u5728 request \u8fc7\u7a0b\u5f02\u5e38\uff0c\u8fd9\u4e2a\u6267\u884c\u5e94\u8be5\u662f\u6267\u884c\u4e0d\u5230\u7684<\/p>\n

    django\/http\/response.py -L 242 <\/p>\n

    # The WSGI server must call this method upon completion of the request.
    # See http:\/\/blog.dscpl.com.au\/2012\/10\/obligations-for-calling-close-on.html
    def close(self)<\/p>\n

    \u8fd9\u91cc\u4f1a\u505a\u4e00\u4e9b\u5904\u7406
    \u4f60\u8981\u7ee7\u7eed\u4e86\u89e3\uff0c\u53ef\u4ee5\u4ece\u8fd9\u91cc\u8ffd\u4ee3\u7801\u56de\u53bb\u3002 <\/div>\n<\/p><\/div>\n<\/li>\n

  • \n
    \n
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    \u8cc7\u6df1\u5927\u4f6c : freakxx <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    \u4f60\u4e5f\u53ef\u4ee5\u7b80\u5355\u770b\u4e0b
    \u6709\u5174\u8da3\u4e5f\u53ef\u4ee5\u7b80\u5355\u770b\u4e0b django\/db\/__init__.py<\/p>\n

    -L 60\uff0c
    \u8fd9\u91cc\u662f\u505a\u4e86\u5904\u7406
    signals.request_started.connect(close_old_connections)
    signals.request_finished.connect(close_old_connections) <\/div>\n<\/p><\/div>\n<\/li>\n

  • \n
    \n
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    \u4e3b<\/span> \u8cc7\u6df1\u5927\u4f6c : chaleaoch <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    @freakxx \u8c22\u8c22,\u5bf9\u7684\u6211\u4eca\u5929\u4e0b\u5348\u770b\u5230\u4e86. <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
    \n
    \u4e3b<\/span> \u8cc7\u6df1\u5927\u4f6c : chaleaoch <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    @freakxx #10 \u4f60\u8bf4\u5f97\u5bf9,\u8fd9\u5757\u6211\u4e5f\u770b\u5230\u4e86.
    #9 \u770b\u6765\u6211\u8fd8\u662f\u6ca1\u8bf4\u660e\u767d. \u6211\u7684\u610f\u601d\u662f,\u548c django \u6ca1\u5173\u7cfb
    \u5c31\u8d77\u4e86\u4e00\u4e2a\u7ebf\u7a0b \u521b\u5efa\u4e86\u4e00\u4e2a connection, \u7136\u540e\u7ebf\u7a0b\u9000\u51fa, connection \u81ea\u52a8\u9500\u6bc1\u5417? \u5e94\u8be5\u81ea\u52a8\u65ad\u5f00\u5427? <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
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    \n
    \u8cc7\u6df1\u5927\u4f6c : freakxx <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    @chaleaoch #12 <\/p>\n

    \u4f1a\u7684\uff0c
    \u8fd9\u8ddf\u5ba2\u6237\u7aef\u6ca1\u5173\u7cfb\u3002<\/p>\n

    \u4f60\u8fde\u63a5\u7ed3\u675f\u4e86\uff0c\u670d\u52a1\u7aef\u80fd\u611f\u77e5\u5230\uff0c\u4f1a\u5173\u95ed\u7684\u3002<\/p>\n

    ——————————<\/p>\n

    \u6211\u4eec\u4e0a\u9762\u8c08\u7684\u53ea\u662f\u8bf4\uff0c\u5728\u67d0\u4e9b\u60c5\u51b5\uff0c\u4f60\u4e0d\u4e3b\u52a8\u5173\u95ed\uff0c\u53ef\u80fd\u4f1a\u5f15\u8d77 too many connections \u8fd9\u79cd\u60c5\u51b5\u3002 <\/p><\/div>\n<\/p><\/div>\n<\/li>\n

  • \n
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    \u8cc7\u6df1\u5927\u4f6c : johnsona <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    @chaleaoch \u610f\u601d\u5c31\u662f\u6bd4\u5982 wsgi server \u521b\u5efa\u4e00\u4e2a\u7ebf\u7a0b\u53bb\u6267\u884c\u5f15\u7528 django \u5bf9\u8c61\uff0c\u521b\u5efa\u4e86 connection\uff0c\u4f46\u662f\u6ca1\u6267\u884c\u5b8c\uff0c\u7ebf\u7a0b\u7ed3\u675f\uff0c\u8fd9\u4e2a connection \u8fd8\u5728\u4e0d\u5728\uff1f
    \u6ca1\u770b\u8fc7\u6e90\u7801\uff0c\u4e0d\u592a\u6e05\u695a\uff0c\u6211\u6709\u51e0\u4e2a\u7591\u95ee\u3002
    gunicorn \u597d\u50cf\u662f prefork \u6a21\u5f0f\uff0c\u4e5f\u5c31\u662f gunicorn \u670d\u52a1\u5668\u8d77\u6765\u4e86\uff0cdjango \u7684 app \u5bf9\u8c61\u5c31\u5728 worker \u8fdb\u7a0b\u4e2d\u5b58\u5728\u4e86\u3002\u5047\u5982\u4e00\u4e2a\u8bf7\u6c42\u6765\u4e86\uff0c\u4e00\u4e2a\u7ebf\u7a0b\uff0c\u90a3\u4f1a\u5f15\u7528\u5f53\u524d\u8fdb\u7a0b\u7684 django app \u5bf9\u8c61\u800c\u4e0d\u662f\u521b\u5efa\uff08\u5e94\u8be5\uff09\u3002django \u4ee3\u7801\u521b\u5efa\u4e86 connection\uff0c\u4f46\u662f\u4e0d\u540c\u7ebf\u7a0b\u6709\u4e0d\u540c\u7684 connection\uff0c\u4e3a\u4e86\u4e0d\u540c\u7684 connection \u4e0d\u641e\u9519\uff0c\u4f1a\u4e0d\u4f1a\u6709\u7c7b\u4f3c flask \u7684 threadlocal \u8fd9\u6837\u7684\u4e1c\u897f\u3002
    \u7136\u540e django \u53ef\u80fd\u4f1a\u6709\u5f02\u5e38\u5904\u7406\uff0c\u5728\u6355\u6349\u5230\u5f02\u5e38\u540e\uff0c\u628a\u5bf9\u5e94 connection close \u6389 <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
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    \u4e3b<\/span> \u8cc7\u6df1\u5927\u4f6c : chaleaoch <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    @freakxx thanks,
    \u4e5f\u5c31\u662f\u8bf4\u5ba2\u6237\u7aef \u7ebf\u7a0b\u6ca1\u4e86, \u5e76\u4e0d\u4f1a\u81ea\u52a8\u53d1\u9001\u65ad\u5f00\u8fde\u63a5\u7684 socket \u8bf7\u6c42.
    \u800c\u662f\u670d\u52a1\u7aef\u53d1\u73b0\u8fd9\u4e2a socket \u597d\u4e45\u90fd\u6ca1\u6709\u63a5\u5230\u6d88\u606f\u81ea\u52a8\u65ad\u5f00.<\/p>\n

    \u591a\u8c22\u591a\u8c22!\u65e0\u610f\u95f4\u4e00\u53e5\u8bdd\u53c8\u63d0\u70b9\u6211\u4e00\u4e0b. <\/p><\/div>\n<\/p><\/div>\n<\/li>\n

  • \n
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    \u8cc7\u6df1\u5927\u4f6c : phithon <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    web \u4f1a\u81ea\u52a8\u5173\u95ed\u8fde\u63a5\uff0c\u5982\u679c\u4e0d\u5728 web \u91cc\uff0c\u8fde\u63a5\u9700\u8981\u624b\u5de5\u5173 <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n","protected":false},"excerpt":{"rendered":"

    django Python man…<\/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\/198723"}],"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=198723"}],"version-history":[{"count":0,"href":"http:\/\/4563.org\/index.php?rest_route=\/wp\/v2\/posts\/198723\/revisions"}],"wp:attachment":[{"href":"http:\/\/4563.org\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=198723"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/4563.org\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=198723"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/4563.org\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=198723"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}