{"id":1176,"date":"2022-05-05T21:21:34","date_gmt":"2022-05-05T13:21:34","guid":{"rendered":"https:\/\/fireinsect.top\/?p=1176"},"modified":"2022-05-05T21:39:39","modified_gmt":"2022-05-05T13:39:39","slug":"%e5%88%86%e5%b8%83%e5%bc%8f%e9%94%81","status":"publish","type":"post","link":"https:\/\/fireinsect.top\/index.php\/2022\/05\/05\/%e5%88%86%e5%b8%83%e5%bc%8f%e9%94%81\/","title":{"rendered":"\u5206\u5e03\u5f0f\u9501"},"content":{"rendered":"\n

\u4ec0\u4e48\u662f\u5206\u5e03\u5f0f<\/p>\n\n\n\n\n\n\n\n

\"\"\/<\/figure>\n\n\n\n

\u5206\u5e03\u5f0f\u7ed3\u6784\u5c31\u662f\u5c06\u4e00\u4e2a\u5b8c\u6574\u7684\u7cfb\u7edf\uff0c\u6309\u4e1a\u52a1\u529f\u80fd\uff0c\u62c6\u5206\u6210\u4e00\u4e2a\u4e2a\u72ec\u7acb\u7684\u5b50\u7cfb\u7edf\uff0c\u5728\u5206\u5e03\u5f0f\u7ed3\u6784\u4e2d\uff0c\u6bcf\u4e2a\u5b50\u7cfb\u7edf\u5c31\u88ab\u79f0\u4e3a”\u670d\u52a1”\u3002<\/p>\n\n\n\n

\u5728java\u4e2d\uff0csynchronized<\/strong>\u5173\u952e\u8bcd\u5728\u6211\u4eec\u7684\u4ee3\u7801\u4e2d\u662f\u5e38\u89c1\u7684\uff0c\u8fd9\u4e9b\u90fd\u662f\u672c\u5730\u9501\uff0c\u53ea\u80fd\u89e3\u51b3\u4e00\u53f0\u670d\u52a1\u5668\u5e76\u53d1\u95ee\u9898\u3002<\/p>\n\n\n\n

\u4f46\u968f\u7740\u4e1a\u52a1\u589e\u5927\uff0c\u6211\u4eec\u65e0\u6cd5\u4fdd\u8bc1\u67d0\u4e2a\u6570\u636e\u7684\u6539\u53d8\u662f\u540c\u4e00\u53f0\u670d\u52a1\u5668\u64cd\u4f5c\u7684\u3002\u56e0\u6b64\uff0c\u6211\u4eec\u9700\u8981\u4e00\u4e2a\u80fd\u9501\u4f4f\u6240\u6709\u670d\u52a1\u5668\u7684\u9501—\u5206\u5e03\u5f0f\u9501\u3002<\/p>\n\n\n\n

<\/div>\n\n\n\n

\u4f7f\u7528Redis\u5206\u5e03\u5f0f\u9501\uff0c\u5c31\u9700\u8981\u7528\u5230Reddission\u5ba2\u6237\u7aef\uff0c\u5b83\u63d0\u4f9b\u7684\u529f\u80fd\u8fdc\u8fdc\u8d85\u51fa\u4e86\u4e00\u4e2aRedis\u5ba2\u6237\u7aef\u7684\u8303\u7574\u3002\u5728\u652f\u6301\u57fa\u672cRedis\u529f\u80fd\u7684\u540c\u65f6\uff0c\u63d0\u4f9b\u4e86\u4e00\u4e9b\u9ad8\u7ea7\u670d\u52a1\uff1a<\/p>\n\n\n\n

  1. \u8fdc\u7a0b\u8c03\u7528<\/li>
  2. \u5206\u5e03\u5f0f\u9501<\/li>
  3. \u5206\u5e03\u5f0f\u5bf9\u8c61\u3001\u5bb9\u5668<\/li><\/ol>\n\n\n\n

    \u4f7f\u7528\u4f9d\u8d56\uff1a<\/strong><\/p>\n\n\n\n

    <dependencies>\n    <dependency>\n        <groupId>org.redisson<\/groupId>\n        <artifactId>redisson-spring-boot-starter<\/artifactId>\n        <version>3.13.0<\/version>\n    <\/dependency>\n<\/dependencies><\/code><\/pre>\n\n\n\n
    <\/div>\n\n\n\n
    \u88c5\u8f7d\u4e00\u4e0b\u5bf9\u8c61<\/p>\n\n\n\n
    @Autowired<\/strong>\nprivate<\/strong> RedissonClient redissonClient;<\/code><\/pre>\n\n\n\n
    \u5b9e\u73b0Redis\u5206\u5e03\u5f0f\u9501\u5927\u81f4\u9700\u8981\u4e09\u6b65\uff1a<\/p>\n\n\n\n
    1.\u53d6\u5f97\u9501<\/strong><\/p>\n\n\n\n
    RLock rLock = redissonClient.getLock(\"CUSTOM_NAME\");<\/code><\/pre>\n\n\n\n
    redissonClient.getLock()<\/code> \u5f97\u5230\u4e00\u4e2a Redis \u9501\u5bf9\u8c61\uff0c\u65b9\u6cd5\u53c2\u6570\u662f \u5b57\u7b26\u4e32<\/em> \u7c7b\u578b\u7684\u81ea\u5b9a\u4e49\u9501\u540d\u79f0\uff0c\u4e0d\u4e00\u5b9a\u8981\u7528\u6570\u636e Key \uff0c\u4e00\u822c\u63a8\u8350\u7528\u5bb9\u6613\u7406\u89e3\u7684\u3001\u4e1a\u52a1\u76f8\u5173\u7684\u540d\u79f0\u3002<\/p>\n\n\n\n
    CUSTOM_NAME \u53ea\u662f\u4ee3\u7801\u4e3e\u4f8b\u54e6<\/p><\/blockquote>\n\n\n\n
    \u4e3a\u4e86\u51cf\u5c11\u51b2\u7a81\u3001\u660e\u786e\u542b\u4e49\u3001\u6613\u4e8e\u7406\u89e3\u548c\u7ef4\u62a4\uff0c\u4e0d\u8981\u4ee5\u7b80\u5355\u7684\u6570\u5b57 id \u503c\u4f5c\u4e3a Redis \u4e2d\u7684\u6570\u636e Key\uff0c\u63a8\u8350\u7684\u683c\u5f0f\u662f\uff1a<\/p>\n\n\n\n
    productId-1-stock<\/code><\/pre>\n\n\n\n
    2.\u4e0a\u9501<\/strong><\/p>\n\n\n\n
    \u4f7f\u7528\uff1a<\/p>\n\n\n\n
    rLock.lock();<\/code><\/pre>\n\n\n\n
    1. \u5e76\u53d1\u60c5\u51b5\u4e0b\uff0c\u6bcf\u4e2a\u7ebf\u7a0b\u90fd\u4f1a\u7ade\u4e89\u9501\uff1a<\/li>
    2. \u7ade\u4e89\u6210\u529f\uff08\u83b7\u53d6\u9501\uff09\u7684\u7ebf\u7a0b\u4f1a\u7ee7\u7eed\u5141\u8bb8<\/li>
    3. \u7ade\u4e89\u5931\u8d25\u7684\u7ebf\u7a0b\u4f1a\u88ab\u7981\u7528\uff0c\u5e76\u4e14\u91cd\u65b0\u83b7\u53d6\u9501\u4e4b\u524d\uff0c\u8be5\u7ebf\u7a0b\u5c06\u4e00\u76f4\u5904\u4e8e\u4f11\u7720\u72b6\u6001\u3002<\/li><\/ol>\n\n\n\n
      \u7b80\u5355\u8bf4\uff0c\u62a2\u4e0d\u5230\u9501\u7684\u7ebf\u7a0b\u4f1a\u6301\u7eed\u7b49\u5f85\uff0c\u6240\u6709\u4f7f\u7528\u9501\u8981\u7279\u522b\u5c0f\u5fc3<\/p><\/blockquote>\n\n\n\n
      3.\u89e3\u9501<\/strong><\/p>\n\n\n\n
      rLock.unlock();<\/code><\/pre>\n\n\n\n
      \u6709\u4e0a\u9501\u5c31\u5fc5\u7136\u8981\u89e3\u9501\uff0c\u5426\u5219\u4f1a\u5bfc\u81f4\u7ebf\u7a0b\u6301\u7eed\u7b49\u7b49\u800c\u4ea7\u751f\u6b7b\u9501\uff0c\u7cfb\u7edf\u4e5f\u5c31\u5361\u6b7b\u4e86\u3002<\/p>\n\n\n\n
      \u6240\u4ee5\uff0c\u63a8\u8350\u628a\u4e1a\u52a1\u64cd\u4f5c\u653e\u5728try–catch–finally\u4e2d\uff1a<\/p>\n\n\n\n
      try<\/strong> {\n  rLock.lock();\n  \/\/ \u62a2\u8d2d\u4e1a\u52a1\u903b\u8f91<\/em>\n} catch<\/strong> (Exception e) {\n    LOG.error(\"some error. \", e);\n} finally<\/strong> {\n    rLock.unlock();\n}<\/code><\/pre>\n","protected":false},"excerpt":{"rendered":"
      \u4ec0\u4e48\u662f\u5206\u5e03\u5f0f<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"spay_email":"","footnotes":""},"categories":[6],"tags":[],"class_list":["post-1176","post","type-post","status-publish","format-standard","hentry","category-6"],"jetpack_featured_media_url":"","_links":{"self":[{"href":"https:\/\/fireinsect.top\/index.php\/wp-json\/wp\/v2\/posts\/1176"}],"collection":[{"href":"https:\/\/fireinsect.top\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/fireinsect.top\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/fireinsect.top\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/fireinsect.top\/index.php\/wp-json\/wp\/v2\/comments?post=1176"}],"version-history":[{"count":12,"href":"https:\/\/fireinsect.top\/index.php\/wp-json\/wp\/v2\/posts\/1176\/revisions"}],"predecessor-version":[{"id":1192,"href":"https:\/\/fireinsect.top\/index.php\/wp-json\/wp\/v2\/posts\/1176\/revisions\/1192"}],"wp:attachment":[{"href":"https:\/\/fireinsect.top\/index.php\/wp-json\/wp\/v2\/media?parent=1176"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fireinsect.top\/index.php\/wp-json\/wp\/v2\/categories?post=1176"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fireinsect.top\/index.php\/wp-json\/wp\/v2\/tags?post=1176"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}