{"id":87622,"date":"2026-07-30T15:40:27","date_gmt":"2026-07-30T07:40:27","guid":{"rendered":"https:\/\/www.wsisp.com\/helps\/87622.html"},"modified":"2026-07-30T15:40:27","modified_gmt":"2026-07-30T07:40:27","slug":"%e5%88%86%e5%b8%83%e5%bc%8f%e5%b9%b6%e5%8f%91%e9%99%90%e6%b5%81%e5%9c%ba%e6%99%af%e4%b8%8b-rsemaphore-%e4%b8%8e-rpermitexpirablesemaphore-%e7%9a%84%e5%ba%94%e7%94%a8","status":"publish","type":"post","link":"https:\/\/www.wsisp.com\/helps\/87622.html","title":{"rendered":"\u5206\u5e03\u5f0f\u5e76\u53d1\u9650\u6d41\u573a\u666f\u4e0b RSemaphore \u4e0e RPermitExpirableSemaphore \u7684\u5e94\u7528"},"content":{"rendered":"<h3>\u4e00\u3001\u4fe1\u53f7\u91cf\u662f\u4ec0\u4e48<\/h3>\n<p>\u4fe1\u53f7\u91cf Semaphore \u662f\u4e00\u79cd\u5e76\u53d1\u63a7\u5236\u5de5\u5177&#xff0c;\u7528\u4e8e\u9650\u5236\u540c\u4e00\u65f6\u523b\u4f7f\u7528\u67d0\u9879\u8d44\u6e90\u7684\u4efb\u52a1\u6570\u91cf\u3002<\/p>\n<p>\u4f8b\u5982&#xff0c;\u4e00\u4e2a AI \u6a21\u578b\u6700\u591a\u7a33\u5b9a\u5904\u7406 20 \u4e2a\u5e76\u53d1\u8bf7\u6c42&#xff1a;<\/p>\n<p>AI \u6a21\u578b\u6700\u5927\u5e76\u53d1\u91cf&#xff1a;20<\/p>\n<p>\u6b63\u5728\u6267\u884c 12 \u4e2a\u8bf7\u6c42<br \/>\n\u2514\u2500\u2500 \u8fd8\u53ef\u4ee5\u6267\u884c 8 \u4e2a\u8bf7\u6c42<\/p>\n<p>\u6b63\u5728\u6267\u884c 20 \u4e2a\u8bf7\u6c42<br \/>\n\u2514\u2500\u2500 \u65b0\u8bf7\u6c42\u9700\u8981\u7b49\u5f85\u6216\u8fd4\u56de\u7e41\u5fd9<\/p>\n<p>\u4fe1\u53f7\u91cf\u9002\u5408\u4fdd\u62a4\u5e76\u53d1\u80fd\u529b\u6709\u9650\u7684\u6280\u672f\u8d44\u6e90&#xff0c;\u4f8b\u5982&#xff1a;<\/p>\n<ul>\n<li>\n<p>AI \u6a21\u578b\u548c GPU \u8d44\u6e90<\/p>\n<\/li>\n<li>\n<p>\u7b2c\u4e09\u65b9\u63a5\u53e3\u8fde\u63a5<\/p>\n<\/li>\n<li>\n<p>\u6587\u4ef6\u5bfc\u51fa\u548c\u89c6\u9891\u8f6c\u7801<\/p>\n<\/li>\n<li>\n<p>\u62a5\u8868\u751f\u6210<\/p>\n<\/li>\n<li>\n<p>\u6570\u636e\u5e93\u590d\u6742\u67e5\u8be2<\/p>\n<\/li>\n<li>\n<p>\u722c\u866b\u548c\u6570\u636e\u91c7\u96c6<\/p>\n<\/li>\n<\/ul>\n<p>\u901a\u5e38\u91c7\u7528\u4ee5\u4e0b\u6a21\u578b&#xff1a;<\/p>\n<p>\u4e00\u79cd\u53d7\u4fdd\u62a4\u8d44\u6e90<br \/>\n\u2514\u2500\u2500 \u4e00\u4e2a\u72ec\u7acb\u4fe1\u53f7\u91cf<\/p>\n<p>\u4e00\u4e2a\u6b63\u5728\u6267\u884c\u7684\u4efb\u52a1<br \/>\n\u2514\u2500\u2500 \u5360\u7528\u4e00\u4e2a\u5e76\u53d1\u540d\u989d<\/p>\n<p>\u4e0d\u540c\u8d44\u6e90\u4f7f\u7528\u4e0d\u540c\u4fe1\u53f7\u91cf&#xff0c;\u5f7c\u6b64\u4e4b\u95f4\u4e0d\u4f1a\u76f8\u4e92\u5360\u7528\u5e76\u53d1\u5bb9\u91cf\u3002<\/p>\n<hr \/>\n<h3>\u4e8c\u3001\u4e3a\u4ec0\u4e48\u9700\u8981\u4fe1\u53f7\u91cf<\/h3>\n<p>\u5982\u679c\u5927\u91cf\u4efb\u52a1\u540c\u65f6\u4f7f\u7528\u540c\u4e00\u9879\u6709\u9650\u8d44\u6e90&#xff0c;\u53ef\u80fd\u5bfc\u81f4&#xff1a;<\/p>\n<p>\u5927\u91cf\u4efb\u52a1\u540c\u65f6\u6267\u884c<br \/>\n        \u2502<br \/>\n        \u25bc<br \/>\nCPU\u3001\u5185\u5b58\u3001\u8fde\u63a5\u6216 GPU \u5360\u7528\u5347\u9ad8<br \/>\n        \u2502<br \/>\n        \u25bc<br \/>\n\u4efb\u52a1\u6267\u884c\u65f6\u95f4\u589e\u52a0<br \/>\n        \u2502<br \/>\n        \u25bc<br \/>\n\u8d85\u65f6\u8bf7\u6c42\u589e\u591a<br \/>\n        \u2502<br \/>\n        \u25bc<br \/>\n\u4e0b\u6e38\u670d\u52a1\u8fc7\u8f7d<\/p>\n<p>\u52a0\u5165\u4fe1\u53f7\u91cf\u540e&#xff1a;<\/p>\n<p>\u5927\u91cf\u4efb\u52a1\u5230\u8fbe<br \/>\n        \u2502<br \/>\n        \u25bc<br \/>\n\u4fe1\u53f7\u91cf\u63a7\u5236\u6267\u884c\u5e76\u53d1<br \/>\n        \u2502<br \/>\n        \u251c\u2500\u2500 \u5b58\u5728\u5e76\u53d1\u540d\u989d \u2192 \u6267\u884c\u4efb\u52a1<br \/>\n        \u2514\u2500\u2500 \u8fbe\u5230\u5e76\u53d1\u4e0a\u9650 \u2192 \u7b49\u5f85\u6216\u8fd4\u56de\u7e41\u5fd9<\/p>\n<p>\u4fe1\u53f7\u91cf\u4e0d\u4f1a\u63d0\u9ad8\u8d44\u6e90\u672c\u8eab\u7684\u6027\u80fd&#xff0c;\u5b83\u7684\u4f5c\u7528\u662f&#xff1a;<\/p>\n<p>\u5c06\u5e76\u53d1\u6570\u91cf\u63a7\u5236\u5728\u8d44\u6e90\u80fd\u591f\u7a33\u5b9a\u627f\u53d7\u7684\u8303\u56f4\u5185\u3002<\/p>\n<p>\u4fe1\u53f7\u91cf\u63a7\u5236\u7684\u662f\u540c\u65f6\u6267\u884c\u6570\u91cf&#xff0c;\u901f\u7387\u9650\u6d41\u5668\u63a7\u5236\u7684\u662f\u5355\u4f4d\u65f6\u95f4\u8bf7\u6c42\u6570\u91cf&#xff1a;<\/p>\n<p>\u6700\u591a\u540c\u65f6\u6267\u884c 10 \u4e2a\u4efb\u52a1<br \/>\n\u2514\u2500\u2500 Semaphore<\/p>\n<p>\u6bcf\u79d2\u6700\u591a\u63a5\u6536 100 \u4e2a\u8bf7\u6c42<br \/>\n\u2514\u2500\u2500 RateLimiter<\/p>\n<hr \/>\n<h3>\u4e09\u3001\u4e3a\u4ec0\u4e48\u9700\u8981\u5206\u5e03\u5f0f\u4fe1\u53f7\u91cf<\/h3>\n<p>JDK \u7684 Semaphore \u53ea\u80fd\u63a7\u5236\u5f53\u524d JVM \u4e2d\u7684\u7ebf\u7a0b\u3002<\/p>\n<p>\u5982\u679c\u670d\u52a1\u90e8\u7f72\u4e86\u4e09\u4e2a\u5b9e\u4f8b&#xff0c;\u6bcf\u4e2a\u5b9e\u4f8b\u90fd\u8bbe\u7f6e&#xff1a;<\/p>\n<p><span class=\"token keyword\">new<\/span> <span class=\"token class-name\">Semaphore<\/span><span class=\"token punctuation\">(<\/span><span class=\"token number\">10<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>\u5b9e\u9645\u6548\u679c\u662f&#xff1a;<\/p>\n<p>\u5b9e\u4f8b A&#xff1a;\u6700\u591a 10 \u4e2a<br \/>\n\u5b9e\u4f8b B&#xff1a;\u6700\u591a 10 \u4e2a<br \/>\n\u5b9e\u4f8b C&#xff1a;\u6700\u591a 10 \u4e2a<\/p>\n<p>\u6574\u4e2a\u7cfb\u7edf\u6700\u591a&#xff1a;30 \u4e2a<\/p>\n<p>\u5982\u679c\u8981\u6c42\u6574\u4e2a\u7cfb\u7edf\u6700\u591a\u53ea\u80fd\u540c\u65f6\u6267\u884c 10 \u4e2a\u4efb\u52a1&#xff0c;\u5c31\u9700\u8981\u8ba9\u6240\u6709\u670d\u52a1\u5b9e\u4f8b\u5171\u4eab\u540c\u4e00\u7ec4\u5e76\u53d1\u540d\u989d&#xff1a;<\/p>\n<p>\u670d\u52a1\u5b9e\u4f8b A \u2500\u2500\u2510<br \/>\n             \u2502<br \/>\n\u670d\u52a1\u5b9e\u4f8b B \u2500\u2500\u253c\u2500\u2500\u25ba Redis<br \/>\n             \u2502      \u2514\u2500\u2500 \u5168\u5c40\u5e76\u53d1\u540d\u989d&#xff1a;10<br \/>\n\u670d\u52a1\u5b9e\u4f8b C \u2500\u2500\u2518<\/p>\n<p>Redisson \u63d0\u4f9b\u4e86\u4e24\u79cd\u5206\u5e03\u5f0f\u4fe1\u53f7\u91cf&#xff1a;<\/p>\n<p>RSemaphore<br \/>\n\u2514\u2500\u2500 \u7ef4\u62a4\u5168\u5c40\u53ef\u7528\u8bb8\u53ef\u8bc1\u6570\u91cf<\/p>\n<p>RPermitExpirableSemaphore<br \/>\n\u251c\u2500\u2500 \u7ef4\u62a4\u5168\u5c40\u53ef\u7528\u8bb8\u53ef\u8bc1\u6570\u91cf<br \/>\n\u251c\u2500\u2500 \u4e3a\u6bcf\u4e2a\u8bb8\u53ef\u8bc1\u751f\u6210 permitId<br \/>\n\u2514\u2500\u2500 \u7ef4\u62a4\u8bb8\u53ef\u8bc1\u5230\u671f\u65f6\u95f4<\/p>\n<hr \/>\n<h3>\u56db\u3001Redis \u5e95\u5c42\u5728\u505a\u4ec0\u4e48<\/h3>\n<h4>4.1 RSemaphore<\/h4>\n<p>RSemaphore \u4f7f\u7528 Redis String \u4fdd\u5b58\u5f53\u524d\u53ef\u7528\u8bb8\u53ef\u8bc1\u6570\u91cf&#xff1a;<\/p>\n<p>Key&#xff1a;limit:ai:model<br \/>\nType&#xff1a;String<br \/>\nValue&#xff1a;20<\/p>\n<p>\u83b7\u53d6\u8bb8\u53ef\u8bc1\u65f6&#xff0c;\u53ef\u7528\u6570\u91cf\u51cf\u4e00&#xff1b;\u91ca\u653e\u8bb8\u53ef\u8bc1\u65f6&#xff0c;\u53ef\u7528\u6570\u91cf\u52a0\u4e00\u3002<\/p>\n<p>\u521d\u59cb\u8bb8\u53ef\u8bc1&#xff1a;20<\/p>\n<p>\u4efb\u52a1 A \u83b7\u53d6<br \/>\n\u2514\u2500\u2500 20 \u2192 19<\/p>\n<p>\u4efb\u52a1 B \u83b7\u53d6<br \/>\n\u2514\u2500\u2500 19 \u2192 18<\/p>\n<p>\u4efb\u52a1 A \u91ca\u653e<br \/>\n\u2514\u2500\u2500 18 \u2192 19<\/p>\n<p>\u83b7\u53d6\u8bb8\u53ef\u8bc1\u7684\u6838\u5fc3 Lua \u903b\u8f91\u53ef\u4ee5\u7b80\u5316\u4e3a&#xff1a;<\/p>\n<p><span class=\"token keyword\">local<\/span> value <span class=\"token operator\">&#061;<\/span> redis<span class=\"token punctuation\">.<\/span><span class=\"token function\">call<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#039;get&#039;<\/span><span class=\"token punctuation\">,<\/span> KEYS<span class=\"token punctuation\">[<\/span><span class=\"token number\">1<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">)<\/span><\/p>\n<p><span class=\"token keyword\">if<\/span> value <span class=\"token operator\">~&#061;<\/span> <span class=\"token keyword\">false<\/span> <span class=\"token keyword\">and<\/span> <span class=\"token function\">tonumber<\/span><span class=\"token punctuation\">(<\/span>value<span class=\"token punctuation\">)<\/span> <span class=\"token operator\">&gt;&#061;<\/span> <span class=\"token number\">1<\/span> <span class=\"token keyword\">then<\/span><br \/>\n    redis<span class=\"token punctuation\">.<\/span><span class=\"token function\">call<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#039;decrby&#039;<\/span><span class=\"token punctuation\">,<\/span> KEYS<span class=\"token punctuation\">[<\/span><span class=\"token number\">1<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token number\">1<\/span><span class=\"token punctuation\">)<\/span><br \/>\n    <span class=\"token keyword\">return<\/span> <span class=\"token number\">1<\/span><br \/>\n<span class=\"token keyword\">end<\/span><\/p>\n<p><span class=\"token keyword\">return<\/span> <span class=\"token number\">0<\/span><\/p>\n<p>Lua \u5c06\u4e0b\u9762\u4e24\u4e2a\u64cd\u4f5c\u5408\u5e76\u6210\u4e00\u4e2a\u539f\u5b50\u64cd\u4f5c&#xff1a;<\/p>\n<p>\u68c0\u67e5\u8bb8\u53ef\u8bc1\u6570\u91cf<br \/>\n        &#043;<br \/>\n\u6263\u51cf\u8bb8\u53ef\u8bc1\u6570\u91cf<\/p>\n<p>\u8fd9\u6837&#xff0c;\u591a\u4e2a\u670d\u52a1\u5b9e\u4f8b\u540c\u65f6\u7ade\u4e89\u6700\u540e\u4e00\u4e2a\u8bb8\u53ef\u8bc1\u65f6&#xff0c;\u53ea\u4f1a\u6709\u4e00\u4e2a\u5b9e\u4f8b\u6210\u529f\u3002<\/p>\n<p>\u91ca\u653e\u8bb8\u53ef\u8bc1\u65f6&#xff0c;Redisson \u4e3b\u8981\u6267\u884c&#xff1a;<\/p>\n<p>INCRBY \u589e\u52a0\u53ef\u7528\u8bb8\u53ef\u8bc1<br \/>\n        \u2502<br \/>\n        \u25bc<br \/>\nPUBLISH \u901a\u77e5\u7b49\u5f85\u5ba2\u6237\u7aef<br \/>\n        \u2502<br \/>\n        \u25bc<br \/>\n\u7b49\u5f85\u5ba2\u6237\u7aef\u91cd\u65b0\u7ade\u4e89<\/p>\n<h4>4.2 RPermitExpirableSemaphore<\/h4>\n<p>RPermitExpirableSemaphore \u9664\u4e86\u4fdd\u5b58\u53ef\u7528\u8bb8\u53ef\u8bc1\u6570\u91cf&#xff0c;\u8fd8\u4f1a\u4fdd\u5b58\u6bcf\u4e2a\u8bb8\u53ef\u8bc1\u7684\u8eab\u4efd\u548c\u5230\u671f\u65f6\u95f4&#xff1a;<\/p>\n<p>Redis String<br \/>\n\u2514\u2500\u2500 \u5f53\u524d\u53ef\u7528\u8bb8\u53ef\u8bc1\u6570\u91cf<\/p>\n<p>Redis Sorted Set<br \/>\n\u2514\u2500\u2500 member&#xff1a;permitId<br \/>\n    score&#xff1a;\u8bb8\u53ef\u8bc1\u5230\u671f\u65f6\u95f4<\/p>\n<p>\u4f8b\u5982&#xff1a;<\/p>\n<p>permit-A \u2192 20:30 \u5230\u671f<br \/>\npermit-B \u2192 20:31 \u5230\u671f<\/p>\n<p>\u83b7\u53d6\u8bb8\u53ef\u8bc1\u65f6&#xff1a;<\/p>\n<p>\u56de\u6536\u5df2\u7ecf\u5230\u671f\u7684\u8bb8\u53ef\u8bc1<br \/>\n        \u2502<br \/>\n        \u25bc<br \/>\n\u5224\u65ad\u662f\u5426\u5b58\u5728\u53ef\u7528\u8bb8\u53ef\u8bc1<br \/>\n        \u2502<br \/>\n        \u251c\u2500\u2500 \u5426 \u2192 \u7b49\u5f85\u6216\u8fd4\u56de\u5931\u8d25<br \/>\n        \u2514\u2500\u2500 \u662f<br \/>\n              \u2502<br \/>\n              \u25bc<br \/>\n        \u53ef\u7528\u6570\u91cf\u51cf\u4e00<br \/>\n              \u2502<br \/>\n              \u25bc<br \/>\n        \u751f\u6210 permitId<br \/>\n              \u2502<br \/>\n              \u25bc<br \/>\n        \u8bb0\u5f55\u5230\u671f\u65f6\u95f4<\/p>\n<p>\u8bb8\u53ef\u8bc1\u5230\u671f\u540e&#xff0c;\u5bf9\u5e94\u7684\u5e76\u53d1\u540d\u989d\u4f1a\u91cd\u65b0\u53c2\u4e0e\u5206\u914d\u3002<\/p>\n<hr \/>\n<h3>\u4e94\u3001\u57fa\u672c\u4f7f\u7528<\/h3>\n<h4>5.1 RSemaphore<\/h4>\n<p><span class=\"token class-name\">RSemaphore<\/span> semaphore <span class=\"token operator\">&#061;<\/span><br \/>\n        redissonClient<span class=\"token punctuation\">.<\/span><span class=\"token function\">getSemaphore<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;limit:ai:model&#034;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>semaphore<span class=\"token punctuation\">.<\/span><span class=\"token function\">trySetPermits<\/span><span class=\"token punctuation\">(<\/span><span class=\"token number\">20<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>\u4e1a\u52a1\u4ee3\u7801&#xff1a;<\/p>\n<p><span class=\"token keyword\">boolean<\/span> acquired <span class=\"token operator\">&#061;<\/span> <span class=\"token boolean\">false<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token keyword\">try<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    acquired <span class=\"token operator\">&#061;<\/span> semaphore<span class=\"token punctuation\">.<\/span><span class=\"token function\">tryAcquire<\/span><span class=\"token punctuation\">(<\/span><br \/>\n            <span class=\"token number\">2<\/span><span class=\"token punctuation\">,<\/span><br \/>\n            <span class=\"token class-name\">TimeUnit<\/span><span class=\"token punctuation\">.<\/span><span class=\"token constant\">SECONDS<\/span><br \/>\n    <span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>    <span class=\"token keyword\">if<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token operator\">!<\/span>acquired<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token keyword\">throw<\/span> <span class=\"token keyword\">new<\/span> <span class=\"token class-name\">IllegalStateException<\/span><span class=\"token punctuation\">(<\/span><br \/>\n                <span class=\"token string\">&#034;\u5f53\u524d\u6a21\u578b\u670d\u52a1\u7e41\u5fd9&#xff0c;\u8bf7\u7a0d\u540e\u91cd\u8bd5&#034;<\/span><br \/>\n        <span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><\/p>\n<p>    <span class=\"token function\">invokeModel<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span> <span class=\"token keyword\">catch<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token class-name\">InterruptedException<\/span> e<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token class-name\">Thread<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">currentThread<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">interrupt<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token keyword\">throw<\/span> <span class=\"token keyword\">new<\/span> <span class=\"token class-name\">IllegalStateException<\/span><span class=\"token punctuation\">(<\/span><br \/>\n            <span class=\"token string\">&#034;\u7b49\u5f85\u5e76\u53d1\u540d\u989d\u65f6\u88ab\u4e2d\u65ad&#034;<\/span><span class=\"token punctuation\">,<\/span><br \/>\n            e<br \/>\n    <span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span> <span class=\"token keyword\">finally<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token keyword\">if<\/span> <span class=\"token punctuation\">(<\/span>acquired<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n        semaphore<span class=\"token punctuation\">.<\/span><span class=\"token function\">release<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<h4>5.2 RPermitExpirableSemaphore<\/h4>\n<p><span class=\"token class-name\">RPermitExpirableSemaphore<\/span> semaphore <span class=\"token operator\">&#061;<\/span><br \/>\n        redissonClient<span class=\"token punctuation\">.<\/span><span class=\"token function\">getPermitExpirableSemaphore<\/span><span class=\"token punctuation\">(<\/span><br \/>\n                <span class=\"token string\">&#034;limit:ai:model&#034;<\/span><br \/>\n        <span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>semaphore<span class=\"token punctuation\">.<\/span><span class=\"token function\">trySetPermits<\/span><span class=\"token punctuation\">(<\/span><span class=\"token number\">20<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>\u83b7\u53d6\u4e00\u4e2a\u79df\u7ea6\u4e3a 60 \u79d2\u7684\u8bb8\u53ef\u8bc1&#xff1a;<\/p>\n<p><span class=\"token class-name\">String<\/span> permitId <span class=\"token operator\">&#061;<\/span> <span class=\"token keyword\">null<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token keyword\">try<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    permitId <span class=\"token operator\">&#061;<\/span> semaphore<span class=\"token punctuation\">.<\/span><span class=\"token function\">tryAcquire<\/span><span class=\"token punctuation\">(<\/span><br \/>\n            <span class=\"token number\">2<\/span><span class=\"token punctuation\">,<\/span><br \/>\n            <span class=\"token number\">60<\/span><span class=\"token punctuation\">,<\/span><br \/>\n            <span class=\"token class-name\">TimeUnit<\/span><span class=\"token punctuation\">.<\/span><span class=\"token constant\">SECONDS<\/span><br \/>\n    <span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>    <span class=\"token keyword\">if<\/span> <span class=\"token punctuation\">(<\/span>permitId <span class=\"token operator\">&#061;&#061;<\/span> <span class=\"token keyword\">null<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token keyword\">throw<\/span> <span class=\"token keyword\">new<\/span> <span class=\"token class-name\">IllegalStateException<\/span><span class=\"token punctuation\">(<\/span><br \/>\n                <span class=\"token string\">&#034;\u5f53\u524d\u6a21\u578b\u670d\u52a1\u7e41\u5fd9&#xff0c;\u8bf7\u7a0d\u540e\u91cd\u8bd5&#034;<\/span><br \/>\n        <span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><\/p>\n<p>    <span class=\"token function\">invokeModel<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span> <span class=\"token keyword\">catch<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token class-name\">InterruptedException<\/span> e<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token class-name\">Thread<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">currentThread<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">interrupt<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token keyword\">throw<\/span> <span class=\"token keyword\">new<\/span> <span class=\"token class-name\">IllegalStateException<\/span><span class=\"token punctuation\">(<\/span><br \/>\n            <span class=\"token string\">&#034;\u7b49\u5f85\u5e76\u53d1\u540d\u989d\u65f6\u88ab\u4e2d\u65ad&#034;<\/span><span class=\"token punctuation\">,<\/span><br \/>\n            e<br \/>\n    <span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span> <span class=\"token keyword\">finally<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token keyword\">if<\/span> <span class=\"token punctuation\">(<\/span>permitId <span class=\"token operator\">!&#061;<\/span> <span class=\"token keyword\">null<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n        semaphore<span class=\"token punctuation\">.<\/span><span class=\"token function\">tryRelease<\/span><span class=\"token punctuation\">(<\/span>permitId<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p>\u63a8\u8350\u6309\u7167\u4e0b\u9762\u7684\u5173\u7cfb\u8bbe\u7f6e\u65f6\u95f4&#xff1a;<\/p>\n<p>\u4efb\u52a1\u6b63\u5e38\u6700\u5927\u8017\u65f6&lt;\u4e1a\u52a1\u8d85\u65f6\u65f6\u95f4&lt;\u8bb8\u53ef\u8bc1\u79df\u7ea6\u65f6\u95f4<\/p>\n<p>\u4f8b\u5982&#xff1a;<\/p>\n<p>\u4efb\u52a1 P99 \u8017\u65f6&#xff1a;35 \u79d2<br \/>\n\u4e1a\u52a1\u8d85\u65f6\u65f6\u95f4&#xff1a;50 \u79d2<br \/>\n\u8bb8\u53ef\u8bc1\u79df\u7ea6\u65f6\u95f4&#xff1a;60 \u79d2<\/p>\n<hr \/>\n<h3>\u516d\u3001\u533a\u522b\u4e0e\u9009\u578b<\/h3>\n<table>\n<tr>\u5bf9\u6bd4\u9879RSemaphoreRPermitExpirableSemaphore<\/tr>\n<tbody>\n<tr>\n<td>\u5168\u5c40\u5e76\u53d1\u63a7\u5236<\/td>\n<td>\u652f\u6301<\/td>\n<td>\u652f\u6301<\/td>\n<\/tr>\n<tr>\n<td>\u83b7\u53d6\u7ed3\u679c<\/td>\n<td>boolean<\/td>\n<td>permitId<\/td>\n<\/tr>\n<tr>\n<td>\u8bb8\u53ef\u8bc1\u5230\u671f\u65f6\u95f4<\/td>\n<td>\u65e0\u5355\u72ec\u79df\u7ea6<\/td>\n<td>\u652f\u6301\u56fa\u5b9a\u79df\u7ea6<\/td>\n<\/tr>\n<tr>\n<td>\u6b63\u5e38\u91ca\u653e<\/td>\n<td>release()<\/td>\n<td>tryRelease(permitId)<\/td>\n<\/tr>\n<tr>\n<td>\u5b9e\u4f8b\u5b95\u673a\u540e\u7684\u5904\u7406<\/td>\n<td>\u53ef\u80fd\u9020\u6210\u8bb8\u53ef\u8bc1\u957f\u671f\u51cf\u5c11<\/td>\n<td>\u79df\u7ea6\u5230\u671f\u540e\u56de\u6536<\/td>\n<\/tr>\n<tr>\n<td>\u63a8\u8350\u573a\u666f<\/td>\n<td>\u7b80\u5355\u3001\u77ed\u65f6\u95f4\u4efb\u52a1<\/td>\n<td>\u751f\u4ea7\u73af\u5883\u5206\u5e03\u5f0f\u5e76\u53d1\u63a7\u5236<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>\u666e\u901a RSemaphore \u7684\u6267\u884c\u6d41\u7a0b&#xff1a;<\/p>\n<p>\u83b7\u53d6\u8bb8\u53ef\u8bc1<br \/>\n    \u2502<br \/>\n    \u25bc<br \/>\n\u53ef\u7528\u6570\u91cf\u51cf\u4e00<br \/>\n    \u2502<br \/>\n    \u25bc<br \/>\n\u4efb\u52a1\u5b8c\u6210\u540e release()<br \/>\n    \u2502<br \/>\n    \u25bc<br \/>\n\u53ef\u7528\u6570\u91cf\u6062\u590d<\/p>\n<p>\u5982\u679c\u5b9e\u4f8b\u5728\u6267\u884c\u8fc7\u7a0b\u4e2d\u5b95\u673a&#xff0c;release() \u65e0\u6cd5\u6267\u884c&#xff0c;\u53ef\u7528\u8bb8\u53ef\u8bc1\u53ef\u80fd\u6c38\u4e45\u51cf\u5c11\u3002<\/p>\n<p>\u521d\u59cb\u8bb8\u53ef\u8bc1&#xff1a;10<br \/>\n\u7b2c\u4e00\u6b21\u5f02\u5e38\u9000\u51fa&#xff1a;10 \u2192 9<br \/>\n\u7b2c\u4e8c\u6b21\u5f02\u5e38\u9000\u51fa&#xff1a;9 \u2192 8<br \/>\n\u2026\u2026<\/p>\n<p>\u56e0\u6b64&#xff0c;\u5728\u751f\u4ea7\u73af\u5883\u4e2d\u4e00\u822c\u5efa\u8bae\u4f18\u5148\u4f7f\u7528&#xff1a;<\/p>\n<p>RPermitExpirableSemaphore<\/p>\n<p>\u5b83\u53ef\u4ee5\u540c\u65f6\u8986\u76d6&#xff1a;<\/p>\n<p>\u4efb\u52a1\u6b63\u5e38\u5b8c\u6210<br \/>\n\u2514\u2500\u2500 \u4e3b\u52a8\u91ca\u653e\u8bb8\u53ef\u8bc1<\/p>\n<p>\u670d\u52a1\u5b9e\u4f8b\u5f02\u5e38\u9000\u51fa<br \/>\n\u2514\u2500\u2500 \u56fa\u5b9a\u79df\u7ea6\u5230\u671f\u540e\u56de\u6536\u8bb8\u53ef\u8bc1<\/p>\n<p>\u6700\u7ec8\u9009\u578b&#xff1a;<\/p>\n<p>\u5355 JVM \u5e76\u53d1\u63a7\u5236<br \/>\n\u2514\u2500\u2500 JDK Semaphore<\/p>\n<p>\u5206\u5e03\u5f0f\u5e76\u53d1\u63a7\u5236<br \/>\n\u2514\u2500\u2500 \u4f18\u5148\u4f7f\u7528 RPermitExpirableSemaphore<\/p>\n<p>\u4efb\u52a1\u5f88\u77ed\u4e14\u53ef\u4ee5\u63a5\u53d7\u4eba\u5de5\u6062\u590d<br \/>\n\u2514\u2500\u2500 \u53ef\u4ee5\u4f7f\u7528 RSemaphore<\/p>\n<p>\u5355\u4f4d\u65f6\u95f4\u8bf7\u6c42\u901f\u7387\u63a7\u5236<br \/>\n\u2514\u2500\u2500 RRateLimiter<\/p>\n<h3>\u4e03\u3001\u603b\u7ed3<\/h3>\n<p>\u4fe1\u53f7\u91cf\u7528\u4e8e\u9650\u5236\u540c\u4e00\u65f6\u523b\u4f7f\u7528\u67d0\u9879\u6709\u9650\u8d44\u6e90\u7684\u4efb\u52a1\u6570\u91cf\u3002<\/p>\n<p>JDK Semaphore<br \/>\n\u2514\u2500\u2500 \u63a7\u5236\u5355 JVM \u5e76\u53d1<\/p>\n<p>RSemaphore<br \/>\n\u2514\u2500\u2500 \u4f7f\u7528 Redis \u63a7\u5236\u5206\u5e03\u5f0f\u5168\u5c40\u5e76\u53d1<\/p>\n<p>RPermitExpirableSemaphore<br \/>\n\u2514\u2500\u2500 \u5728\u5168\u5c40\u5e76\u53d1\u63a7\u5236\u57fa\u7840\u4e0a<br \/>\n    \u4e3a\u6bcf\u4e2a\u8bb8\u53ef\u8bc1\u589e\u52a0 ID \u548c\u56fa\u5b9a\u79df\u7ea6<\/p>\n<p>\u5728\u751f\u4ea7\u73af\u5883\u4e2d&#xff0c;\u4e00\u822c\u4f18\u5148\u4f7f\u7528 RPermitExpirableSemaphore&#xff0c;\u907f\u514d\u670d\u52a1\u5b9e\u4f8b\u5f02\u5e38\u9000\u51fa\u540e&#xff0c;\u8bb8\u53ef\u8bc1\u65e0\u6cd5\u5f52\u8fd8\u5bfc\u81f4\u53ef\u7528\u5e76\u53d1\u5bb9\u91cf\u6301\u7eed\u51cf\u5c11\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u4e00\u3001\u4fe1\u53f7\u91cf\u662f\u4ec0\u4e48<br \/>\n\u4fe1\u53f7\u91cf Semaphore \u662f\u4e00\u79cd\u5e76\u53d1\u63a7\u5236\u5de5\u5177&#xff0c;\u7528\u4e8e\u9650\u5236\u540c\u4e00\u65f6\u523b\u4f7f\u7528\u67d0\u9879\u8d44\u6e90\u7684\u4efb\u52a1\u6570\u91cf\u3002<br \/>\n\u4f8b\u5982&#xff0c;\u4e00\u4e2a AI \u6a21\u578b\u6700\u591a\u7a33\u5b9a\u5904\u7406 20 \u4e2a\u5e76\u53d1\u8bf7\u6c42&#xff1a;<br \/>\nAI \u6a21\u578b\u6700\u5927\u5e76\u53d1\u91cf&#xff1a;20\u6b63\u5728\u6267\u884c 12 \u4e2a\u8bf7\u6c42<br \/>\n\u2514\u2500\u2500 \u8fd8\u53ef\u4ee5\u6267\u884c 8 \u4e2a\u8bf7\u6c42\u6b63\u5728\u6267\u884c 20 \u4e2a\u8bf7\u6c42<br \/>\n\u2514\u2500\u2500 \u65b0\u8bf7\u6c42\u9700\u8981\u7b49\u5f85\u6216\u8fd4\u56de\u7e41\u5fd9\u4fe1\u53f7\u91cf\u9002\u5408\u4fdd\u62a4\u5e76\u53d1\u80fd\u529b\u6709\u9650\u7684\u6280\u672f\u8d44\u6e90&#xff0c;\u4f8b\u5982&#xff1a;AI \u6a21\u578b\u548c GPU \u8d44\u6e90\u7b2c\u4e09\u65b9\u63a5\u53e3\u8fde\u63a5\u6587\u4ef6\u5bfc\u51fa\u548c\u89c6<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[9099,99,664],"topic":[],"class_list":["post-87622","post","type-post","status-publish","format-standard","hentry","category-server","tag-9099","tag-java","tag-664"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v20.3 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>\u5206\u5e03\u5f0f\u5e76\u53d1\u9650\u6d41\u573a\u666f\u4e0b RSemaphore \u4e0e RPermitExpirableSemaphore \u7684\u5e94\u7528 - \u7f51\u7855\u4e92\u8054\u5e2e\u52a9\u4e2d\u5fc3<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.wsisp.com\/helps\/87622.html\" \/>\n<meta property=\"og:locale\" content=\"zh_CN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"\u5206\u5e03\u5f0f\u5e76\u53d1\u9650\u6d41\u573a\u666f\u4e0b RSemaphore \u4e0e RPermitExpirableSemaphore \u7684\u5e94\u7528 - \u7f51\u7855\u4e92\u8054\u5e2e\u52a9\u4e2d\u5fc3\" \/>\n<meta property=\"og:description\" content=\"\u4e00\u3001\u4fe1\u53f7\u91cf\u662f\u4ec0\u4e48 \u4fe1\u53f7\u91cf Semaphore \u662f\u4e00\u79cd\u5e76\u53d1\u63a7\u5236\u5de5\u5177&#xff0c;\u7528\u4e8e\u9650\u5236\u540c\u4e00\u65f6\u523b\u4f7f\u7528\u67d0\u9879\u8d44\u6e90\u7684\u4efb\u52a1\u6570\u91cf\u3002 \u4f8b\u5982&#xff0c;\u4e00\u4e2a AI \u6a21\u578b\u6700\u591a\u7a33\u5b9a\u5904\u7406 20 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