{"id":6036,"date":"2024-11-14T10:05:52","date_gmt":"2024-11-14T02:05:52","guid":{"rendered":"https:\/\/fwq.ai\/blog\/6036\/"},"modified":"2024-11-14T10:05:52","modified_gmt":"2024-11-14T02:05:52","slug":"redis%e9%94%81%e5%a6%82%e4%bd%95%e8%a7%a3%e5%86%b3%e5%b9%b6%e5%8f%91","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/6036\/","title":{"rendered":"redis\u9501\u5982\u4f55\u89e3\u51b3\u5e76\u53d1"},"content":{"rendered":"

\n redis\u9501\u662f\u4e00\u79cd\u89e3\u51b3\u5e76\u53d1\u8bbf\u95ee\u5171\u4eab\u8d44\u6e90\u65f6\u7ade\u6001\u6761\u4ef6\u7684\u5206\u5e03\u5f0f\u9501\u673a\u5236\u3002\u5b83\u901a\u8fc7\u4ee5\u4e0b\u6b65\u9aa4\u5b9e\u73b0\uff1a\u4f7f\u7528setnx\u547d\u4ee4\uff0c\u5728\u952e\u4e0d\u5b58\u5728\u65f6\u8bbe\u7f6e\u4e00\u4e2a\u952e\u6765\u83b7\u53d6\u9501\u3002\u4f7f\u7528expire\u547d\u4ee4\u4e3a\u9501\u8bbe\u7f6e\u4e00\u4e2a\u8fc7\u671f\u65f6\u95f4\uff0c\u4ee5\u9632\u6b62\u6b7b\u9501\u3002\u4f7f\u7528del\u547d\u4ee4\u91ca\u653e\u9501\uff0c\u5f53\u5ba2\u6237\u7aef\u5b8c\u6210\u5bf9\u53d7\u4fdd\u62a4\u8d44\u6e90\u7684\u8bbf\u95ee\u540e\u3002redis\u9501\u8f7b\u91cf\u7ea7\u3001\u53ef\u6269\u5c55\u3001\u9ad8\u6027\u80fd\u4e14\u6613\u4e8e\u5b9e\u73b0\uff0c\u63d0\u4f9b\u4e86\u4e00\u4e2a\u6709\u6548\u7684\u5e76\u53d1\u89e3\u51b3\u65b9\u6848\u3002\n<\/p><\/blockquote>\n

\"redis\u9501\u5982\u4f55\u89e3\u51b3\u5e76\u53d1\u63d2\u56fe\"<\/p>\n

Redis\u9501\u5982\u4f55\u89e3\u51b3\u5e76\u53d1<\/strong><\/p>\n

Redis\u9501\u662f\u4e00\u79cd\u4f7f\u7528Redis\u952e\u5b9e\u73b0\u5206\u5e03\u5f0f\u9501\u7684\u673a\u5236\uff0c\u65e8\u5728\u89e3\u51b3\u5171\u4eab\u8d44\u6e90\u65f6\u53ef\u80fd\u53d1\u751f\u7684\u7ade\u6001\u6761\u4ef6\u3002\u5b83\u63d0\u4f9b\u4e86\u8f7b\u91cf\u7ea7\u3001\u53ef\u6269\u5c55\u4e14\u9ad8\u6027\u80fd\u7684\u89e3\u51b3\u65b9\u6848\u3002<\/p>\n

\u5982\u4f55\u4f7f\u7528Redis\u9501\u89e3\u51b3\u5e76\u53d1\uff1a<\/strong><\/p>\n

1. SETNX\u547d\u4ee4<\/strong><\/p>\n

SETNX\uff08SET if Not eXists\uff09\u547d\u4ee4\u7528\u4e8e\u8bbe\u7f6e\u4e00\u4e2a\u952e\uff0c\u4ec5\u5f53\u8be5\u952e\u4e0d\u5b58\u5728\u65f6\u624d\u8bbe\u7f6e\u6210\u529f\u3002\u5b83\u8fd4\u56de1\uff08\u8868\u793a\u8bbe\u7f6e\u6210\u529f\uff09\u62160\uff08\u8868\u793a\u952e\u5df2\u5b58\u5728\uff09\u3002<\/p>\n

\u8981\u83b7\u53d6\u9501\uff0c\u8bf7\u6267\u884c\u4ee5\u4e0b\u64cd\u4f5c\uff1a<\/p>\n

SETNX my_lock 1<\/pre>\n
 \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
2. EXPIRE\u547d\u4ee4<\/strong><\/p>\n
EXPIRE\u547d\u4ee4\u7528\u4e8e\u4e3a\u952e\u8bbe\u7f6e\u4e00\u4e2a\u8fc7\u671f\u65f6\u95f4\u3002\u8fd9\u662f\u4e3a\u4e86\u9632\u6b62\u9501\u6c38\u8fdc\u4fdd\u6301\uff0c\u5982\u679c\u6301\u6709\u9501\u7684\u5ba2\u6237\u7aef\u5d29\u6e83\u4e86\u3002<\/p>\n
\u8981\u8bbe\u7f6e\u9501\u7684\u8fc7\u671f\u65f6\u95f4\uff0c\u8bf7\u6267\u884c\u4ee5\u4e0b\u64cd\u4f5c\uff1a<\/p>\n
EXPIRE my_lock 300  \/\/ \u8bbe\u7f6e\u9501\u7684\u8fc7\u671f\u65f6\u95f4\u4e3a5\u5206\u949f<\/pre>\n
 \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
3. DEL\u547d\u4ee4<\/strong><\/p>\n
DEL\u547d\u4ee4\u7528\u4e8e\u5220\u9664\u952e\u3002\u5f53\u5ba2\u6237\u7aef\u5b8c\u6210\u5bf9\u53d7\u4fdd\u62a4\u8d44\u6e90\u7684\u8bbf\u95ee\u540e\uff0c\u5e94\u91ca\u653e\u9501\u3002<\/p>\n
\u8981\u91ca\u653e\u9501\uff0c\u8bf7\u6267\u884c\u4ee5\u4e0b\u64cd\u4f5c\uff1a<\/p>\n
DEL my_lock<\/pre>\n
 \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
\u5de5\u4f5c\u539f\u7406\uff1a<\/strong><\/p>\n
\u5f53\u5ba2\u6237\u7aef\u60f3\u8981\u83b7\u53d6\u9501\u65f6\uff0c\u5b83\u4f1a\u4f7f\u7528SETNX\u547d\u4ee4\u521b\u5efa\u952e\u3002\u5982\u679c\u952e\u4e0d\u5b58\u5728\uff08\u8fd9\u610f\u5473\u7740\u6ca1\u6709\u5176\u4ed6\u5ba2\u6237\u7aef\u6301\u6709\u9501\uff09\uff0c\u90a3\u4e48SETNX\u4f1a\u8fd4\u56de1\uff0c\u9501\u88ab\u83b7\u53d6\u3002\u5ba2\u6237\u7aef\u7136\u540e\u4e3a\u9501\u8bbe\u7f6e\u4e00\u4e2a\u8fc7\u671f\u65f6\u95f4\uff0c\u4ee5\u9632\u6b62\u6b7b\u9501\u3002<\/p>\n
\u5f53\u5ba2\u6237\u7aef\u5b8c\u6210\u5bf9\u53d7\u4fdd\u62a4\u8d44\u6e90\u7684\u8bbf\u95ee\u540e\uff0c\u5b83\u4f1a\u4f7f\u7528DEL\u547d\u4ee4\u91ca\u653e\u9501\u3002\u5982\u679c\u53e6\u4e00\u4e2a\u5ba2\u6237\u7aef\u540c\u65f6\u8bd5\u56fe\u83b7\u53d6\u9501\uff0c\u5b83\u4f1a\u6536\u5230SETNX\u547d\u4ee4\u76840\uff0c\u8868\u660e\u9501\u5df2\u5b58\u5728\uff0c\u4ece\u800c\u907f\u514d\u5e76\u53d1\u8bbf\u95ee\u53d7\u4fdd\u62a4\u8d44\u6e90\u3002<\/p>\n
\u4f18\u52bf\uff1a<\/strong><\/p>\n
    \n
  •  \u8f7b\u91cf\u7ea7\uff1a<\/strong>Redis\u9501\u5728Redis\u5185\u5b58\u4e2d\u5b9e\u73b0\uff0c\u5f00\u9500\u5f88\u5c0f\u3002<\/li>\n
  •  \u53ef\u6269\u5c55\uff1a<\/strong>Redis\u662f\u9ad8\u5ea6\u53ef\u6269\u5c55\u7684\uff0c\u53ef\u4ee5\u5904\u7406\u5927\u91cf\u5e76\u53d1\u3002<\/li>\n
  •  \u9ad8\u6027\u80fd\uff1a<\/strong>Redis\u9501\u53ef\u4ee5\u5728\u9ad8\u5e76\u53d1\u4e0b\u63d0\u4f9b\u5feb\u901f\u54cd\u5e94\u65f6\u95f4\u3002<\/li>\n
  •  \u6613\u4e8e\u5b9e\u73b0\uff1a<\/strong>\u4f7f\u7528SETNX\u3001EXPIRE\u548cDEL\u547d\u4ee4\u5b9e\u73b0Redis\u9501\u975e\u5e38\u7b80\u5355\u3002<\/li>\n<\/ul>\n
    \u4ee5\u4e0a\u5c31\u662f\u9501\u5982\u4f55\u89e3\u51b3\u5e76\u53d1\u7684\u8be6\u7ec6\u5185\u5bb9\uff0c\u66f4\u591a\u8bf7\u5173\u6ce8\u7c73\u4e91\u7f51\u5176\u5b83\u76f8\u5173\u6587\u7ae0\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"
    redis\u9501\u662f\u4e00\u79cd\u89e3\u51b3\u5e76\u53d1\u8bbf\u95ee\u5171\u4eab\u8d44\u6e90\u65f6\u7ade\u6001\u6761\u4ef6\u7684\u5206\u5e03\u5f0f\u9501\u673a\u5236\u3002\u5b83\u901a\u8fc7\u4ee5\u4e0b\u6b65\u9aa4\u5b9e\u73b0\uff1a\u4f7f\u7528setnx\u547d\u4ee4\uff0c\u5728\u952e\u4e0d\u5b58\u5728\u65f6\u8bbe\u7f6e\u4e00\u4e2a\u952e\u6765\u83b7\u53d6\u9501\u3002\u4f7f\u7528expire\u547d\u4ee4\u4e3a\u9501\u8bbe\u7f6e\u4e00\u4e2a\u8fc7\u671f\u65f6\u95f4\uff0c\u4ee5\u9632\u6b62\u6b7b\u9501\u3002\u4f7f\u7528del\u547d\u4ee4\u91ca\u653e\u9501\uff0c\u5f53\u5ba2\u6237\u7aef\u5b8c\u6210\u5bf9\u53d7\u4fdd\u62a4\u8d44\u6e90\u7684\u8bbf\u95ee\u540e\u3002redis\u9501\u8f7b\u91cf\u7ea7\u3001\u53ef\u6269\u5c55\u3001\u9ad8\u6027\u80fd\u4e14\u6613\u4e8e\u5b9e\u73b0\uff0c\u63d0\u4f9b\u4e86\u4e00\u4e2a\u6709\u6548\u7684\u5e76\u53d1\u89e3\u51b3\u65b9\u6848\u3002 Redis\u9501\u5982\u4f55\u89e3\u51b3\u5e76\u53d1 Redis\u9501\u662f\u4e00\u79cd\u4f7f\u7528Redis\u952e\u5b9e\u73b0\u5206\u5e03\u5f0f\u9501\u7684\u673a\u5236\uff0c\u65e8\u5728\u89e3\u51b3\u5171\u4eab\u8d44\u6e90\u65f6\u53ef\u80fd\u53d1\u751f\u7684\u7ade\u6001\u6761\u4ef6\u3002\u5b83\u63d0\u4f9b\u4e86\u8f7b\u91cf\u7ea7\u3001\u53ef\u6269\u5c55\u4e14\u9ad8\u6027\u80fd\u7684\u89e3\u51b3\u65b9\u6848\u3002 \u5982\u4f55\u4f7f\u7528Redis\u9501\u89e3\u51b3\u5e76\u53d1\uff1a 1. SETNX\u547d\u4ee4 SETNX\uff08SET if Not eXists\uff09\u547d\u4ee4\u7528\u4e8e\u8bbe\u7f6e\u4e00\u4e2a\u952e\uff0c\u4ec5\u5f53\u8be5\u952e\u4e0d\u5b58\u5728\u65f6\u624d\u8bbe\u7f6e\u6210\u529f\u3002\u5b83\u8fd4\u56de1\uff08\u8868\u793a\u8bbe\u7f6e\u6210\u529f\uff09\u62160\uff08\u8868\u793a\u952e\u5df2\u5b58\u5728\uff09\u3002 \u8981\u83b7\u53d6\u9501\uff0c\u8bf7\u6267\u884c\u4ee5\u4e0b\u64cd\u4f5c\uff1a SETNX my_lock 1 \u767b\u5f55\u540e\u590d\u5236 2. EXPIRE\u547d\u4ee4 EXPIRE\u547d\u4ee4\u7528\u4e8e\u4e3a\u952e\u8bbe\u7f6e\u4e00\u4e2a\u8fc7\u671f\u65f6\u95f4\u3002\u8fd9\u662f\u4e3a\u4e86\u9632\u6b62\u9501\u6c38\u8fdc\u4fdd\u6301\uff0c\u5982\u679c\u6301\u6709\u9501\u7684\u5ba2\u6237\u7aef\u5d29\u6e83\u4e86\u3002 \u8981\u8bbe\u7f6e\u9501\u7684\u8fc7\u671f\u65f6\u95f4\uff0c\u8bf7\u6267\u884c\u4ee5\u4e0b\u64cd\u4f5c\uff1a EXPIRE my_lock 300 \/\/ \u8bbe\u7f6e\u9501\u7684\u8fc7\u671f\u65f6\u95f4\u4e3a5\u5206\u949f \u767b\u5f55\u540e\u590d\u5236 3. DEL\u547d\u4ee4 DEL\u547d\u4ee4\u7528\u4e8e\u5220\u9664\u952e\u3002\u5f53\u5ba2\u6237\u7aef\u5b8c\u6210\u5bf9\u53d7\u4fdd\u62a4\u8d44\u6e90\u7684\u8bbf\u95ee\u540e\uff0c\u5e94\u91ca\u653e\u9501\u3002 \u8981\u91ca\u653e\u9501\uff0c\u8bf7\u6267\u884c\u4ee5\u4e0b\u64cd\u4f5c\uff1a DEL my_lock \u767b\u5f55\u540e\u590d\u5236 \u5de5\u4f5c\u539f\u7406\uff1a \u5f53\u5ba2\u6237\u7aef\u60f3\u8981\u83b7\u53d6\u9501\u65f6\uff0c\u5b83\u4f1a\u4f7f\u7528SETNX\u547d\u4ee4\u521b\u5efa\u952e\u3002\u5982\u679c\u952e\u4e0d\u5b58\u5728\uff08\u8fd9\u610f\u5473\u7740\u6ca1\u6709\u5176\u4ed6\u5ba2\u6237\u7aef\u6301\u6709\u9501\uff09\uff0c\u90a3\u4e48SETNX\u4f1a\u8fd4\u56de1\uff0c\u9501\u88ab\u83b7\u53d6\u3002\u5ba2\u6237\u7aef\u7136\u540e\u4e3a\u9501\u8bbe\u7f6e\u4e00\u4e2a\u8fc7\u671f\u65f6\u95f4\uff0c\u4ee5\u9632\u6b62\u6b7b\u9501\u3002 \u5f53\u5ba2\u6237\u7aef\u5b8c\u6210\u5bf9\u53d7\u4fdd\u62a4\u8d44\u6e90\u7684\u8bbf\u95ee\u540e\uff0c\u5b83\u4f1a\u4f7f\u7528DEL\u547d\u4ee4\u91ca\u653e\u9501\u3002\u5982\u679c\u53e6\u4e00\u4e2a\u5ba2\u6237\u7aef\u540c\u65f6\u8bd5\u56fe\u83b7\u53d6\u9501\uff0c\u5b83\u4f1a\u6536\u5230SETNX\u547d\u4ee4\u76840\uff0c\u8868\u660e\u9501\u5df2\u5b58\u5728\uff0c\u4ece\u800c\u907f\u514d\u5e76\u53d1\u8bbf\u95ee\u53d7\u4fdd\u62a4\u8d44\u6e90\u3002 \u4f18\u52bf\uff1a \u8f7b\u91cf\u7ea7\uff1aRedis\u9501\u5728Redis\u5185\u5b58\u4e2d\u5b9e\u73b0\uff0c\u5f00\u9500\u5f88\u5c0f\u3002 \u53ef\u6269\u5c55\uff1aRedis\u662f\u9ad8\u5ea6\u53ef\u6269\u5c55\u7684\uff0c\u53ef\u4ee5\u5904\u7406\u5927\u91cf\u5e76\u53d1\u3002 \u9ad8\u6027\u80fd\uff1aRedis\u9501\u53ef\u4ee5\u5728\u9ad8\u5e76\u53d1\u4e0b\u63d0\u4f9b\u5feb\u901f\u54cd\u5e94\u65f6\u95f4\u3002 \u6613\u4e8e\u5b9e\u73b0\uff1a\u4f7f\u7528SETNX\u3001EXPIRE\u548cDEL\u547d\u4ee4\u5b9e\u73b0Redis\u9501\u975e\u5e38\u7b80\u5355\u3002 \u4ee5\u4e0a\u5c31\u662f\u9501\u5982\u4f55\u89e3\u51b3\u5e76\u53d1\u7684\u8be6\u7ec6\u5185\u5bb9\uff0c\u66f4\u591a\u8bf7\u5173\u6ce8\u7c73\u4e91\u7f51\u5176\u5b83\u76f8\u5173\u6587\u7ae0\uff01<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[16],"tags":[],"class_list":["post-6036","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/6036","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/comments?post=6036"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/6036\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=6036"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=6036"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=6036"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}