{"id":3011,"date":"2022-04-25T15:22:00","date_gmt":"2022-04-25T07:22:00","guid":{"rendered":"https:\/\/www.zeroheart.xyz\/wordpress\/?p=3011"},"modified":"2022-04-25T15:43:11","modified_gmt":"2022-04-25T07:43:11","slug":"io%e7%ba%bf%e7%a8%8b%e6%a8%a1%e5%9e%8b","status":"publish","type":"post","link":"https:\/\/www.zeroheart.xyz\/wordpress\/?p=3011","title":{"rendered":"io\u7ebf\u7a0b\u6a21\u578b"},"content":{"rendered":"\n<p><a href=\"https:\/\/blog.csdn.net\/a491108796\/article\/details\/119782325\">(26\u6761\u6d88\u606f) IO\u7ebf\u7a0b\u6a21\u578b\u77e5\u8bc6_LonglyDean\u7684\u535a\u5ba2-CSDN\u535a\u5ba2_io\u7ebf\u7a0b<\/a><\/p>\n\n\n\n<p>\u8fd9\u7bc7\u8bb2\u7684\u4e0d\u9519\uff0c\u76f4\u63a5\u6536\u85cf\u4e86\u3002<\/p>\n\n\n\n<p>\u5b58\u5728\u95ee\u9898:<\/p>\n\n\n\n<ol><li>\u5f53\u5e76\u53d1\u6570\u5f88\u5927\uff0c\u5c31\u4f1a\u521b\u5efa\u5927\u91cf\u7684\u7ebf\u7a0b\uff0c\u5360\u7528\u5f88\u5927\u7cfb\u7edf\u8d44\u6e90<\/li><li>\u8fde\u63a5\u521b\u5efa\u540e\uff0c\u5982\u679c\u5f53\u524d\u7ebf\u7a0b\u6682\u65f6\u6ca1\u6709\u6570\u636e\u53ef\u8bfb\uff0c\u8be5\u7ebf\u7a0b\u4f1a\u963b\u585e\u5728 read \u64cd\u4f5c\uff0c\u9020\u6210\u7ebf\u7a0b\u8d44\u6e90\u6d6a\u8d39<\/li><\/ol>\n\n\n\n<p>Reactor \u6a21\u578b<br>Reactor \u6a21\u5f0f\uff0c\u901a\u8fc7\u4e00\u4e2a\u6216\u591a\u4e2a\u8f93\u5165\u540c\u65f6\u4f20\u9012\u7ed9\u670d\u52a1\u5904\u7406\u5668\u7684\u6a21\u5f0f , \u670d\u52a1\u5668\u7aef\u7a0b\u5e8f\u5904\u7406\u4f20\u5165\u7684\u591a\u4e2a\u8bf7\u6c42,\u5e76\u5c06\u5b83\u4eec\u540c\u6b65\u5206\u6d3e\u5230\u76f8\u5e94\u7684\u5904\u7406\u7ebf\u7a0b\uff0c \u56e0\u6b64 Reactor \u6a21\u5f0f\u4e5f\u53eb Dispatcher\u6a21\u5f0f. Reactor \u6a21\u5f0f\u4f7f\u7528IO \u590d\u7528\u76d1\u542c\u4e8b\u4ef6, \u6536\u5230\u4e8b\u4ef6\u540e\uff0c\u5206\u53d1\u7ed9\u67d0\u4e2a\u7ebf\u7a0b(\u8fdb\u7a0b), \u8fd9\u70b9\u5c31\u662f\u7f51\u7edc\u670d\u52a1\u5668\u9ad8\u5e76\u53d1\u5904\u7406\u5173\u952e.<\/p>\n\n\n\n<ol><li>\u5355 Reactor \u5355\u7ebf\u7a0b<\/li><\/ol>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"650\" src=\"https:\/\/www.zeroheart.xyz\/wordpress\/wp-content\/uploads\/2022\/04\/image-5-1024x650.png\" alt=\"\" class=\"wp-image-3020\" srcset=\"https:\/\/www.zeroheart.xyz\/wordpress\/wp-content\/uploads\/2022\/04\/image-5-1024x650.png 1024w, https:\/\/www.zeroheart.xyz\/wordpress\/wp-content\/uploads\/2022\/04\/image-5-300x190.png 300w, https:\/\/www.zeroheart.xyz\/wordpress\/wp-content\/uploads\/2022\/04\/image-5-768x488.png 768w, https:\/\/www.zeroheart.xyz\/wordpress\/wp-content\/uploads\/2022\/04\/image-5-1200x762.png 1200w, https:\/\/www.zeroheart.xyz\/wordpress\/wp-content\/uploads\/2022\/04\/image-5.png 1484w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<p>Selector\u662f\u53ef\u4ee5\u5b9e\u73b0\u5e94\u7528\u7a0b\u5e8f\u901a\u8fc7\u4e00\u4e2a\u963b\u585e\u5bf9\u8c61\u76d1\u542c\u591a\u8def\u8fde\u63a5\u8bf7\u6c42<\/p>\n\n\n\n<p>Reactor \u5bf9\u8c61\u901a\u8fc7 Selector\u76d1\u63a7\u5ba2\u6237\u7aef\u8bf7\u6c42\u4e8b\u4ef6\uff0c\u6536\u5230\u4e8b\u4ef6\u540e\u901a\u8fc7 Dispatch \u8fdb\u884c\u5206\u53d1<\/p>\n\n\n\n<p>\u662f\u5efa\u7acb\u8fde\u63a5\u8bf7\u6c42\u4e8b\u4ef6\uff0c\u5219\u7531 Acceptor \u901a\u8fc7 Accept \u5904\u7406\u8fde\u63a5\u8bf7\u6c42\uff0c\u7136\u540e\u521b\u5efa\u4e00\u4e2a Handler \u5bf9\u8c61\u5904\u7406\u8fde\u63a5\u5b8c\u6210\u540e\u7684\u540e\u7eed\u4e1a\u52a1\u5904\u7406<\/p>\n\n\n\n<p>Handler \u4f1a\u5b8c\u6210 Read\u2192\u4e1a\u52a1\u5904\u7406\u2192Send \u7684\u5b8c\u6574\u4e1a\u52a1\u6d41\u7a0b<\/p>\n\n\n\n<p>\u4f18\u70b9\uff1a<br>\u6a21\u578b\u7b80\u5355\uff0c\u6ca1\u6709\u591a\u7ebf\u7a0b\u3001\u8fdb\u7a0b\u901a\u4fe1\u3001\u7ade\u4e89\u7684\u95ee\u9898\uff0c\u5168\u90e8\u90fd\u5728\u4e00\u4e2a\u7ebf\u7a0b\u4e2d\u5b8c\u6210<\/p>\n\n\n\n<p>\u7f3a\u70b9:<br>1. \u6027\u80fd\u95ee\u9898: \u53ea\u6709\u4e00\u4e2a\u7ebf\u7a0b\uff0c\u65e0\u6cd5\u5b8c\u5168\u53d1\u6325\u591a\u6838 CPU \u7684\u6027\u80fd\u3002Handler \u5728\u5904\u7406\u67d0\u4e2a\u8fde\u63a5\u4e0a\u7684\u4e1a\u52a1\u65f6\uff0c\u6574\u4e2a\u8fdb\u7a0b\u65e0\u6cd5\u5904\u7406\u5176\u4ed6\u8fde\u63a5\u4e8b\u4ef6\uff0c\u5f88\u5bb9\u6613\u5bfc\u81f4\u6027\u80fd\u74f6\u9888<\/p>\n\n\n\n<p>2. \u53ef\u9760\u6027\u95ee\u9898: \u7ebf\u7a0b\u610f\u5916\u7ec8\u6b62\u6216\u8005\u8fdb\u5165\u6b7b\u5faa\u73af\uff0c\u4f1a\u5bfc\u81f4\u6574\u4e2a\u7cfb\u7edf\u901a\u4fe1\u6a21\u5757\u4e0d\u53ef\u7528\uff0c\u4e0d\u80fd\u63a5\u6536\u548c\u5904\u7406\u5916\u90e8\u6d88\u606f\uff0c\u9020\u6210\u8282\u70b9\u6545\u969c<\/p>\n\n\n\n<ol start=\"2\"><li>\u5355 Reactor\u591a\u7ebf\u7a0b<\/li><\/ol>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"791\" src=\"https:\/\/www.zeroheart.xyz\/wordpress\/wp-content\/uploads\/2022\/04\/image-6-1024x791.png\" alt=\"\" class=\"wp-image-3024\" srcset=\"https:\/\/www.zeroheart.xyz\/wordpress\/wp-content\/uploads\/2022\/04\/image-6-1024x791.png 1024w, https:\/\/www.zeroheart.xyz\/wordpress\/wp-content\/uploads\/2022\/04\/image-6-300x232.png 300w, https:\/\/www.zeroheart.xyz\/wordpress\/wp-content\/uploads\/2022\/04\/image-6-768x593.png 768w, https:\/\/www.zeroheart.xyz\/wordpress\/wp-content\/uploads\/2022\/04\/image-6-1200x927.png 1200w, https:\/\/www.zeroheart.xyz\/wordpress\/wp-content\/uploads\/2022\/04\/image-6.png 1522w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<p>Reactor \u5bf9\u8c61\u901a\u8fc7 selector \u76d1\u63a7\u5ba2\u6237\u7aef\u8bf7\u6c42\u4e8b\u4ef6, \u6536\u5230\u4e8b\u4ef6\u540e\uff0c\u901a\u8fc7 dispatch \u8fdb\u884c\u5206\u53d1<br>\u5982\u679c\u5efa\u7acb\u8fde\u63a5\u8bf7\u6c42, \u5219\u53f3 Acceptor \u901a\u8fc7accept \u5904\u7406\u8fde\u63a5\u8bf7\u6c42<br>\u5982\u679c\u4e0d\u662f\u8fde\u63a5\u8bf7\u6c42\uff0c\u5219\u7531 reactor \u5206\u53d1\u8c03\u7528\u8fde\u63a5\u5bf9\u5e94\u7684 handler \u6765\u5904\u7406<br>handler \u53ea\u8d1f\u8d23\u54cd\u5e94\u4e8b\u4ef6\uff0c\u4e0d\u505a\u5177\u4f53\u7684\u4e1a\u52a1\u5904\u7406, \u901a\u8fc7 read \u8bfb\u53d6\u6570\u636e\u540e\uff0c\u4f1a\u5206\u53d1\u7ed9\u540e\u9762\u7684worker \u7ebf\u7a0b\u6c60\u7684\u67d0\u4e2a\u7ebf\u7a0b\u5904\u7406\u4e1a\u52a1<br>worker \u7ebf\u7a0b\u6c60\u4f1a\u5206\u914d\u72ec\u7acb\u7ebf\u7a0b\u5b8c\u6210\u771f\u6b63\u7684\u4e1a\u52a1\uff0c\u5e76\u5c06\u7ed3\u679c\u8fd4\u56de\u7ed9 handler<br>handler \u6536\u5230\u54cd\u5e94\u540e\uff0c\u901a\u8fc7 send \u5c06\u7ed3\u679c\u8fd4\u56de\u7ed9 client<br>\u4f18\u70b9:<br>\u53ef\u4ee5\u5145\u5206\u7684\u5229\u7528\u591a\u6838 cpu \u7684\u5904\u7406\u80fd\u529b<\/p>\n\n\n\n<p>\u7f3a\u70b9:<br>\u591a\u7ebf\u7a0b\u6570\u636e\u5171\u4eab\u548c\u8bbf\u95ee\u6bd4\u8f83\u590d\u6742\uff0c reactor \u5904\u7406\u6240\u6709\u7684\u4e8b\u4ef6\u7684\u76d1\u542c\u548c\u54cd\u5e94\uff0c\u5728\u5355\u7ebf\u7a0b\u8fd0\u884c\uff0c \u5728<\/p>\n\n\n\n<p>\u9ad8\u5e76\u53d1\u573a\u666f\u5bb9\u6613\u51fa\u73b0\u6027\u80fd\u74f6\u9888<\/p>\n\n\n\n<ol start=\"3\"><li>\u4e3b\u4ece Reactor \u591a\u7ebf\u7a0b<\/li><\/ol>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"946\" src=\"https:\/\/www.zeroheart.xyz\/wordpress\/wp-content\/uploads\/2022\/04\/image-7-1024x946.png\" alt=\"\" class=\"wp-image-3026\" srcset=\"https:\/\/www.zeroheart.xyz\/wordpress\/wp-content\/uploads\/2022\/04\/image-7-1024x946.png 1024w, https:\/\/www.zeroheart.xyz\/wordpress\/wp-content\/uploads\/2022\/04\/image-7-300x277.png 300w, https:\/\/www.zeroheart.xyz\/wordpress\/wp-content\/uploads\/2022\/04\/image-7-768x710.png 768w, https:\/\/www.zeroheart.xyz\/wordpress\/wp-content\/uploads\/2022\/04\/image-7-1200x1109.png 1200w, https:\/\/www.zeroheart.xyz\/wordpress\/wp-content\/uploads\/2022\/04\/image-7.png 1452w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<p>Reactor \u4e3b\u7ebf\u7a0b MainReactor \u5bf9\u8c61\u901a\u8fc7 select \u76d1\u542c\u5ba2\u6237\u7aef\u8fde\u63a5\u4e8b\u4ef6\uff0c\u6536\u5230\u4e8b\u4ef6\u540e\uff0c\u901a\u8fc7Acceptor \u5904\u7406\u5ba2\u6237\u7aef\u8fde\u63a5\u4e8b\u4ef6<br>\u5f53 Acceptor \u5904\u7406\u5b8c\u5ba2\u6237\u7aef\u8fde\u63a5\u4e8b\u4ef6\u4e4b\u540e\uff08\u4e0e\u5ba2\u6237\u7aef\u5efa\u7acb\u597d Socket \u8fde\u63a5\uff09\uff0cMainReactor \u5c06\u8fde\u63a5\u5206\u914d\u7ed9 SubReactor\u3002\uff08\u5373\uff1aMainReactor \u53ea\u8d1f\u8d23\u76d1\u542c\u5ba2\u6237\u7aef\u8fde\u63a5\u8bf7\u6c42\uff0c\u548c\u5ba2\u6237\u7aef\u5efa\u7acb\u8fde\u63a5\u4e4b\u540e\u5c06\u8fde\u63a5\u4ea4\u7531 SubReactor \u76d1\u542c\u540e\u9762\u7684 IO \u4e8b\u4ef6\u3002)<br>SubReactor \u5c06\u8fde\u63a5\u52a0\u5165\u5230\u81ea\u5df1\u7684\u8fde\u63a5\u961f\u5217\u8fdb\u884c\u76d1\u542c\uff0c\u5e76\u521b\u5efa Handler \u5bf9\u5404\u79cd\u4e8b\u4ef6\u8fdb\u884c\u5904\u7406<br>\u5f53\u8fde\u63a5\u4e0a\u6709\u65b0\u4e8b\u4ef6\u53d1\u751f\u7684\u65f6\u5019\uff0cSubReactor \u5c31\u4f1a\u8c03\u7528\u5bf9\u5e94\u7684 Handler \u5904\u7406<br>Handler \u901a\u8fc7 read \u4ece\u8fde\u63a5\u4e0a\u8bfb\u53d6\u8bf7\u6c42\u6570\u636e\uff0c\u5c06\u8bf7\u6c42\u6570\u636e\u5206\u53d1\u7ed9 Worker \u7ebf\u7a0b\u6c60\u8fdb\u884c\u4e1a\u52a1\u5904\u7406<br>Worker \u7ebf\u7a0b\u6c60\u4f1a\u5206\u914d\u72ec\u7acb\u7ebf\u7a0b\u6765\u5b8c\u6210\u771f\u6b63\u7684\u4e1a\u52a1\u5904\u7406\uff0c\u5e76\u5c06\u5904\u7406\u7ed3\u679c\u8fd4\u56de\u7ed9 Handler\u3002Handler \u901a\u8fc7 send \u5411\u5ba2\u6237\u7aef\u53d1\u9001\u54cd\u5e94\u6570\u636e<br>\u4e00\u4e2a MainReactor \u53ef\u4ee5\u5bf9\u5e94\u591a\u4e2a SubReactor\uff0c\u5373\u4e00\u4e2a MainReactor \u7ebf\u7a0b\u53ef\u4ee5\u5bf9\u5e94\u591a\u4e2aSubReactor \u7ebf\u7a0b<br>\u4f18\u70b9:<br>1. MainReactor \u7ebf\u7a0b\u4e0e SubReactor \u7ebf\u7a0b\u7684\u6570\u636e\u4ea4\u4e92\u7b80\u5355\u804c\u8d23\u660e\u786e\uff0cMainReactor \u7ebf\u7a0b\u53ea\u9700\u8981\u63a5\u6536\u65b0\u8fde\u63a5\uff0cSubReactor \u7ebf\u7a0b\u5b8c\u6210\u540e\u7eed\u7684\u4e1a\u52a1\u5904\u7406<br>2. MainReactor \u7ebf\u7a0b\u4e0e SubReactor \u7ebf\u7a0b\u7684\u6570\u636e\u4ea4\u4e92\u7b80\u5355\uff0c MainReactor \u7ebf\u7a0b\u53ea\u9700\u8981\u628a\u65b0\u8fde\u63a5\u4f20\u7ed9 SubReactor \u7ebf\u7a0b\uff0cSubReactor \u7ebf\u7a0b\u65e0\u9700\u8fd4\u56de\u6570\u636e<br>3. \u591a\u4e2a SubReactor \u7ebf\u7a0b\u80fd\u591f\u5e94\u5bf9\u66f4\u9ad8\u7684\u5e76\u53d1\u8bf7\u6c42<br>\u7f3a\u70b9:<br>\u8fd9\u79cd\u6a21\u5f0f\u7684\u7f3a\u70b9\u662f\u7f16\u7a0b\u590d\u6742\u5ea6\u8f83\u9ad8\u3002\u4f46\u662f\u7531\u4e8e\u5176\u4f18\u70b9\u660e\u663e\uff0c\u5728\u8bb8\u591a\u9879\u76ee\u4e2d\u88ab\u5e7f\u6cdb\u4f7f\u7528\uff0c\u5305\u62ec<br>Nginx\u3001Memcached\u3001Netty \u7b49\u3002\u8fd9\u79cd\u6a21\u5f0f\u4e5f\u88ab\u53eb\u505a\u670d\u52a1\u5668\u7684 1+M+N \u7ebf\u7a0b\u6a21\u5f0f\uff0c\u5373\u4f7f\u7528\u8be5\u6a21\u5f0f\u5f00\u53d1\u7684\u670d\u52a1\u5668\u5305\u542b\u4e00\u4e2a\uff08\u6216\u591a\u4e2a\uff0c1 \u53ea\u662f\u8868\u793a\u76f8\u5bf9\u8f83\u5c11\uff09\u8fde\u63a5\u5efa\u7acb\u7ebf\u7a0b+M \u4e2a IO \u7ebf\u7a0b+N \u4e2a\u4e1a\u52a1\u5904\u7406\u7ebf\u7a0b\u3002\u8fd9\u662f\u4e1a\u754c\u6210\u719f\u7684\u670d\u52a1\u5668\u7a0b\u5e8f\u8bbe\u8ba1\u6a21\u5f0f\u3002<br><\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Netty\u7684IO\u6a21\u578b<\/h2>\n\n\n\n<p>\u4ecb\u7ecd\u5b8c\u7f51\u7edc\u6570\u636e\u5305\u5728\u5185\u6838\u4e2d\u7684\u6536\u53d1\u8fc7\u7a0b\u4ee5\u53ca\u4e94\u79cdIO\u6a21\u578b\u548c\u4e24\u79cd\u7ebf\u7a0b\u6a21\u578b\u540e\uff0c\u7ebf\u7a0b\u6211\u4eec\u6765\u770b\u4e0bNetty\u4e2d\u7684IO\u6a21\u578b\u662f\u4ec0\u4e48\u6837\u7684\u3002<\/p>\n\n\n\n<p>\u5728\u6211\u4eec\u4ecb\u7ecdReactor IO\u7ebf\u7a0b\u6a21\u578b\u7684\u65f6\u5019\u63d0\u5230\u6709\u4e09\u79cdReactor\u6a21\u578b\uff1a\u5355Reactor\u5355\u7ebf\u7a0b\uff0c\u5355Reactor\u591a\u7ebf\u7a0b\uff0c\u4e3b\u4eceReactor\u591a\u7ebf\u7a0b\u3002<\/p>\n\n\n\n<p>\u8fd9\u4e09\u79cdReactor\u6a21\u578b\u5728netty\u4e2d\u90fd\u662f\u652f\u6301\u7684\uff0c\u4f46\u662f\u6211\u4eec\u5e38\u7528\u7684\u662f\u4e3b\u4eceReactor\u591a\u7ebf\u7a0b\u6a21\u578b\u3002<\/p>\n\n\n\n<p>\u800c\u6211\u4eec\u4e4b\u524d\u4ecb\u7ecd\u7684\u4e09\u79cdReactor\u53ea\u662f\u4e00\u79cd\u6a21\u578b\uff0c\u662f\u4e00\u79cd\u8bbe\u8ba1\u601d\u60f3\u3002\u5b9e\u9645\u4e0a\u5404\u79cd\u7f51\u7edc\u6846\u67b6\u5728\u5b9e\u73b0\u4e2d\u5e76\u4e0d\u662f\u4e25\u683c\u6309\u7167\u6a21\u578b\u6765\u5b9e\u73b0\u7684\uff0c\u4f1a\u6709\u4e00\u4e9b\u5c0f\u7684\u4e0d\u540c\uff0c\u4f46\u5927\u4f53\u8bbe\u8ba1\u601d\u60f3\u4e0a\u662f\u4e00\u6837\u7684\u3002<\/p>\n\n\n\n<p>\u4e0b\u9762\u6211\u4eec\u6765\u770b\u4e0bnetty\u4e2d\u7684\u4e3b\u4eceReactor\u591a\u7ebf\u7a0b\u6a21\u578b\u662f\u4ec0\u4e48\u6837\u5b50\uff1a<\/p>\n\n\n\n<ul><li>Reactor\u5728netty\u4e2d\u662f\u4ee5group\u7684\u5f62\u5f0f\u51fa\u73b0\u7684\u3002netty\u4e2d\u5c06Reactor\u5206\u4e3a\u4e24\u7ec4\uff0c\u4e00\u7ec4\u662fMainReactorGroup\u4e5f\u5c31\u662f\u6211\u4eec\u5728\u7f16\u7801\u4e2d\u5e38\u5e38\u770b\u5230\u7684EventLoopGroup bossGroup\uff0c\u53e6\u4e00\u7ec4\u662fSubReactorGroup\u4e5f\u5c31\u662f\u6211\u4eec\u5728\u7f16\u7801\u4e2d\u5e38\u5e38\u770b\u5230\u7684EventLoopGroup workerGroup\u3002<\/li><li>MainReactorGroup\u901a\u5e38\u53ea\u6709\u4e00\u4e2aReactor\uff0c\u4e13\u95e8\u8d1f\u8d23\u505a\u91cd\u8981\u7684\u4e8b\u60c5\uff0c\u4e5f\u5c31\u662f\u76d1\u542c\u8fde\u63a5accept\u4e8b\u4ef6\u3002\u5f53\u6709\u8fde\u63a5\u4e8b\u4ef6\u4ea7\u751f\u65f6\uff0c\u5728\u5bf9\u5e94\u7684\u5904\u7406handler acceptor\u4e2d\u521b\u5efa\u521d\u59cb\u5316\u76f8\u5e94\u7684NioSocketChannel\uff08\u4ee3\u8868\u4e00\u4e2aSocket\u8fde\u63a5\uff09\u3002\u7136\u540e\u4ee5\u8d1f\u8f7d\u5747\u8861\u7684\u65b9\u5f0f\u5728SubReactorGroup\u4e2d\u9009\u53d6\u4e00\u4e2aReactor\uff0c\u6ce8\u518c\u4e0a\u53bb\uff0c\u76d1\u542cRead\u4e8b\u4ef6\u3002<\/li><\/ul>\n\n\n\n<blockquote class=\"wp-block-quote\"><p>MainReactorGroup\u4e2d\u53ea\u6709\u4e00\u4e2aReactor\u7684\u539f\u56e0\u662f\uff0c\u901a\u5e38\u6211\u4eec\u7684\u670d\u52a1\u7aef\u7a0b\u5e8f\u53ea\u4f1a\u7ed1\u5b9a\u76d1\u542c\u4e00\u4e2a\u7aef\u53e3\uff0c\u5982\u679c\u7ed1\u5b9a\u76d1\u542c\u591a\u4e2a\u7aef\u53e3\uff0c\u5c31\u4f1a\u914d\u7f6e\u591a\u4e2aReactor\u3002<\/p><\/blockquote>\n\n\n\n<ul><li>SubReactorGroup\u4e2d\u6709\u591a\u4e2aReactor\uff0c\u5177\u4f53Reactor\u7684\u4e2a\u6570\u53ef\u4ee5\u7531\u7cfb\u7edf\u53c2\u6570 -D io.netty.evnetLoopThreads\u6307\u5b9a\u3002\u9ed8\u8ba4\u7684Reactor\u7684\u4e2a\u6570\u4e3aCPU\u6838\u6570*2\u3002SubReactorGroup\u4e2d\u7684Reactor\u4e3b\u8981\u8d1f\u8d23\u76d1\u542c\u8bfb\u5199\u4e8b\u4ef6\uff0c\u6bcf\u4e2aReactor\u8d1f\u8d23\u76d1\u542c\u4e00\u7ec4socket\u8fde\u63a5\u3002\u5c06\u5168\u90e8\u7684\u8fde\u63a5\u5206\u644a\u5728\u591a\u4e2aReactor\u4e2d\u3002<\/li><li>\u4e00\u4e2aReactor\u5206\u914d\u4e00\u4e2aIO\u7ebf\u7a0b\uff0c\u8fd9\u4e2aIO\u7ebf\u7a0b\u8d1f\u8d23\u4eceReactor\u4e2d\u83b7\u53d6IO\u5c31\u7eea\u4e8b\u4ef6\uff0c\u6267\u884cIO\u8c03\u7528\u83b7\u53d6IO\u6570\u636e\uff0c\u6267\u884cPipeLine\u3002<\/li><\/ul>\n\n\n\n<blockquote class=\"wp-block-quote\"><p>socket\u8fde\u63a5\u5728\u521b\u5efa\u540e\u5c31\u88ab\u56fa\u5b9a\u7684\u5206\u914d\u7ed9\u4e00\u4e2aReactor\uff0c\u6240\u4ee5\u4e00\u4e2asocket\u8fde\u63a5\u4e5f\u53ea\u4f1a\u88ab\u4e00\u4e2a\u56fa\u5b9a\u7684IO\u7ebf\u7a0b\u6267\u884c\uff0c\u6bcf\u4e2asocket\u8fde\u63a5\u5206\u914d\u4e00\u4e2a\u72ec\u7acb\u7684PipeLine\u5b9e\u4f8b\uff0c\u7528\u6765\u7f16\u6392\u8fd9\u4e2asocket\u8fde\u63a5\u4e0a\u7684IO\u5904\u7406\u903b\u8f91\u3002\u8fd9\u79cd\u65e0\u9501\u4e32\u884c\u5316\u7684\u8bbe\u8ba1\u76ee\u7684\u662f\u4e3a\u4e86\u9632\u6b62\u7ebf\u7a0b\u5e76\u53d1\u6267\u884c\u540c\u4e00\u4e2asocket\u8fde\u63a5\u4e0a\u7684IO\u903b\u8f91\u5904\u7406\uff0c\u9632\u6b62\u51fa\u73b0\u7ebf\u7a0b\u5b89\u5168\u95ee\u9898\u3002\u540c\u65f6\u4f7f\u7cfb\u7edf\u541e\u5410\u91cf\u8fbe\u5230\u6700\u5927\u5316<\/p><p>\u7531\u4e8e\u6bcf\u4e2aReactor\u4e2d\u53ea\u6709\u4e00\u4e2aIO\u7ebf\u7a0b\uff0c\u8fd9\u4e2aIO\u7ebf\u7a0b\u53eb\u6267\u884cIO\u6d3b\u8dc3\u7684socket\u8fde\u63a5\u5bf9\u5e94\u7684Pipeline\u4e2d\u7684ChannelHandler\uff0c\u53c8\u8981\u4eceReactor\u4e2d\u83b7\u53d6IO\u5c31\u7eea\u4e8b\u4ef6\uff0c\u6267\u884cIO\u8c03\u7528\u3002\u6240\u4ee5Pipeline\u4e2dchannelhandler\u4e2d\u6267\u884c\u7684\u903b\u8f91\u4e0d\u80fd\u8017\u65f6\u592a\u957f\uff0c\u5c3d\u91cf\u5c06\u8017\u65f6\u7684\u4e1a\u52a1\u903b\u8f91\u5904\u7406\u653e\u5165\u5355\u72ec\u7684\u4e1a\u52a1\u7ebf\u7a0b\u6c60\u4e2d\u5904\u7406\uff0c\u5426\u5219\u4f1a\u5f71\u54cd\u5176\u5b83\u8fde\u63a5\u7684IO\u8bfb\u5199\uff0c\u4ece\u800c\u8fd1\u4e00\u6b65\u5f71\u54cd\u5230\u6574\u4e2a\u670d\u52a1\u7a0b\u5e8f\u7684IO\u541e\u5410\u3002<\/p><\/blockquote>\n\n\n\n<p>\u5f53IO\u8bf7\u6c42\u5728\u4e1a\u52a1\u7ebf\u7a0b\u4e2d\u5b8c\u6210\u76f8\u5e94\u7684\u4e1a\u52a1\u903b\u8f91\u5904\u7406\u540e\uff0c\u5728\u4e1a\u52a1\u7ebf\u7a0b\u4e2d\u5229\u7528\u6301\u6709\u7684ChannelHandlerContext\u5f15\u7528\u5c06\u54cd\u5e94\u6570\u636e\u5728Pipeline\u4e2d\u53cd\u5411\u4f20\u64ad\uff0c\u6700\u7ec8\u5199\u56de\u7ed9\u5ba2\u6237\u7aef\u3002<\/p>\n\n\n\n<p>netty\u652f\u6301\u7684\u4e09\u79cdReactor\u6a21\u578b\uff1a<\/p>\n\n\n\n<p><strong>\u914d\u7f6e\u5355Reactor\u5355\u7ebf\u7a0b<\/strong><\/p>\n\n\n\n<pre class=\"wp-block-preformatted\">EventLoopGroup eventGroup = new NioEventLoopGroup(1);\nServerBootstrap serverBootstrap = new ServerBootstrap(); \nserverBootstrap.group(eventGroup);<\/pre>\n\n\n\n<p><strong>\u914d\u7f6e\u5355Reactor\u591a\u7ebf\u7a0b<\/strong><\/p>\n\n\n\n<pre class=\"wp-block-preformatted\">EventLoopGroup eventGroup = new NioEventLoopGroup();\nServerBootstrap serverBootstrap = new ServerBootstrap(); \nserverBootstrap.group(eventGroup);<\/pre>\n\n\n\n<p><strong>\u914d\u7f6e\u4e3b\u4eceReactor\u591a\u7ebf\u7a0b<\/strong><\/p>\n\n\n\n<pre class=\"wp-block-preformatted\">EventLoopGroup bossGroup = new NioEventLoopGroup(1); \nEventLoopGroup workerGroup = new NioEventLoopGroup();\nServerBootstrap serverBootstrap = new ServerBootstrap(); \nserverBootstrap.group(bossGroup, workerGroup);<\/pre>\n\n\n\n<p><\/p>\n","protected":false},"excerpt":{"rendered":"<p>(26\u6761\u6d88\u606f) IO\u7ebf\u7a0b\u6a21\u578b\u77e5\u8bc6_LonglyDean\u7684\u535a\u5ba2-CSDN\u535a\u5ba2_io\u7ebf\u7a0b \u8fd9\u7bc7\u8bb2\u7684\u4e0d\u9519\uff0c\u76f4\u63a5\u6536\u85cf\u4e86 [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[6],"tags":[204],"_links":{"self":[{"href":"https:\/\/www.zeroheart.xyz\/wordpress\/index.php?rest_route=\/wp\/v2\/posts\/3011"}],"collection":[{"href":"https:\/\/www.zeroheart.xyz\/wordpress\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.zeroheart.xyz\/wordpress\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.zeroheart.xyz\/wordpress\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.zeroheart.xyz\/wordpress\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=3011"}],"version-history":[{"count":14,"href":"https:\/\/www.zeroheart.xyz\/wordpress\/index.php?rest_route=\/wp\/v2\/posts\/3011\/revisions"}],"predecessor-version":[{"id":3030,"href":"https:\/\/www.zeroheart.xyz\/wordpress\/index.php?rest_route=\/wp\/v2\/posts\/3011\/revisions\/3030"}],"wp:attachment":[{"href":"https:\/\/www.zeroheart.xyz\/wordpress\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=3011"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.zeroheart.xyz\/wordpress\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=3011"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.zeroheart.xyz\/wordpress\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=3011"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}