{"id":153197,"date":"2024-11-02T05:26:20","date_gmt":"2024-11-01T21:26:20","guid":{"rendered":"https:\/\/server.hk\/cnblog\/153197\/"},"modified":"2024-11-02T05:26:22","modified_gmt":"2024-11-01T21:26:22","slug":"%e5%be%9e-redis-%e6%b8%9b%e5%b0%91%e5%95%86%e5%93%81%e5%ba%ab%e5%ad%98%e6%8a%80%e5%b7%a7%e8%88%87%e7%ab%85%e9%96%80%ef%bc%88%e5%a6%82%e4%bd%95%e5%9c%a8-redis-%e4%b8%ad%e6%b8%9b%e5%ba%ab%e5%ad%98","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/153197\/","title":{"rendered":"\u5f9e Redis \u6e1b\u5c11\u5546\u54c1\u5eab\u5b58\u6280\u5de7\u8207\u7ac5\u9580\uff08\u5982\u4f55\u5728 Redis \u4e2d\u6e1b\u5eab\u5b58\uff09"},"content":{"rendered":"

\u5f9e Redis \u6e1b\u5c11\u5546\u54c1\u5eab\u5b58\u6280\u5de7\u8207\u7ac5\u9580\uff08\u5982\u4f55\u5728 Redis \u4e2d\u6e1b\u5eab\u5b58\uff09<\/h1>\n

\u5728\u73fe\u4eca\u7684\u96fb\u5b50\u5546\u52d9\u74b0\u5883\u4e2d\uff0c\u5546\u54c1\u5eab\u5b58\u7ba1\u7406\u662f\u4f01\u696d\u6210\u529f\u7684\u95dc\u9375\u4e4b\u4e00\u3002\u96a8\u8457\u6280\u8853\u7684\u9032\u6b65\uff0c\u8d8a\u4f86\u8d8a\u591a\u7684\u4f01\u696d\u9078\u64c7\u4f7f\u7528 Redis \u4f86\u7ba1\u7406\u5176\u5eab\u5b58\u7cfb\u7d71\u3002Redis \u662f\u4e00\u500b\u9ad8\u6548\u7684\u9375\u503c\u5b58\u5132\u7cfb\u7d71\uff0c\u80fd\u5920\u63d0\u4f9b\u5feb\u901f\u7684\u6578\u64da\u5b58\u53d6\u548c\u64cd\u4f5c\uff0c\u7279\u5225\u9069\u5408\u7528\u65bc\u9700\u8981\u9ad8\u6027\u80fd\u548c\u9ad8\u53ef\u7528\u6027\u7684\u61c9\u7528\u5834\u666f\u3002\u672c\u6587\u5c07\u63a2\u8a0e\u5982\u4f55\u5728 Redis \u4e2d\u6709\u6548\u5730\u6e1b\u5c11\u5546\u54c1\u5eab\u5b58\uff0c\u4e26\u63d0\u4f9b\u4e00\u4e9b\u5be6\u7528\u7684\u6280\u5de7\u8207\u7ac5\u9580\u3002<\/p>\n

Redis \u7684\u57fa\u672c\u6982\u5ff5<\/h2>\n

Redis \u662f\u4e00\u500b\u958b\u6e90\u7684\u5167\u5b58\u6578\u64da\u7d50\u69cb\u5b58\u5132\u7cfb\u7d71\uff0c\u652f\u6301\u591a\u7a2e\u6578\u64da\u7d50\u69cb\uff0c\u5982\u5b57\u7b26\u4e32\u3001\u54c8\u5e0c\u3001\u5217\u8868\u3001\u96c6\u5408\u7b49\u3002\u7531\u65bc\u5176\u9ad8\u6548\u7684\u6027\u80fd\uff0cRedis \u88ab\u5ee3\u6cdb\u61c9\u7528\u65bc\u7de9\u5b58\u3001\u6d88\u606f\u968a\u5217\u548c\u5be6\u6642\u6578\u64da\u5206\u6790\u7b49\u5834\u666f\u3002\u5728\u5546\u54c1\u5eab\u5b58\u7ba1\u7406\u4e2d\uff0cRedis \u7684\u5feb\u901f\u8b80\u5beb\u80fd\u529b\u4f7f\u5176\u6210\u70ba\u7406\u60f3\u7684\u9078\u64c7\u3002<\/p>\n

\u5982\u4f55\u5728 Redis \u4e2d\u6e1b\u5c11\u5546\u54c1\u5eab\u5b58<\/h2>\n

\u5728 Redis \u4e2d\u6e1b\u5c11\u5546\u54c1\u5eab\u5b58\u7684\u904e\u7a0b\u4e3b\u8981\u6d89\u53ca\u5230\u5c0d\u5eab\u5b58\u6578\u64da\u7684\u64cd\u4f5c\u3002\u4ee5\u4e0b\u662f\u4e00\u4e9b\u5e38\u898b\u7684\u65b9\u6cd5\u548c\u6280\u5de7\uff1a<\/p>\n

1. \u4f7f\u7528\u539f\u5b50\u64cd\u4f5c<\/h3>\n

\u5728\u591a\u7528\u6236\u74b0\u5883\u4e2d\uff0c\u5eab\u5b58\u6578\u64da\u7684\u6e1b\u5c11\u5fc5\u9808\u662f\u539f\u5b50\u6027\u7684\uff0c\u4ee5\u907f\u514d\u8d85\u8ce3\u7684\u60c5\u6cc1\u3002Redis \u63d0\u4f9b\u4e86\u539f\u5b50\u64cd\u4f5c\u7684\u652f\u6301\uff0c\u53ef\u4ee5\u4f7f\u7528 DECR<\/code> \u6216 DECRBY<\/code> \u547d\u4ee4\u4f86\u5b89\u5168\u5730\u6e1b\u5c11\u5eab\u5b58\u3002\u4f8b\u5982\uff1a<\/p>\n

DECR product:123:stock<\/code><\/pre>\n
\u9019\u689d\u547d\u4ee4\u6703\u5c07\u5546\u54c1 ID \u70ba 123 \u7684\u5eab\u5b58\u6e1b\u5c11 1\u3002\u5982\u679c\u9700\u8981\u6e1b\u5c11\u7279\u5b9a\u6578\u91cf\u7684\u5eab\u5b58\uff0c\u53ef\u4ee5\u4f7f\u7528\uff1a<\/p>\n
DECRBY product:123:stock 5<\/code><\/pre>\n
2. \u4f7f\u7528\u4e8b\u52d9<\/h3>\n
\u70ba\u4e86\u78ba\u4fdd\u591a\u500b\u64cd\u4f5c\u7684\u539f\u5b50\u6027\uff0c\u53ef\u4ee5\u4f7f\u7528 Redis \u7684\u4e8b\u52d9\u529f\u80fd\u3002\u901a\u904e MULTI<\/code> \u548c EXEC<\/code> \u547d\u4ee4\uff0c\u53ef\u4ee5\u5c07\u591a\u500b\u64cd\u4f5c\u6253\u5305\u5728\u4e00\u8d77\u57f7\u884c\u3002\u4f8b\u5982\uff1a<\/p>\n
MULTI\nDECR product:123:stock\nSET product:123:last_sold_time NOW()\nEXEC<\/code><\/pre>\n
\u9019\u6a23\u53ef\u4ee5\u78ba\u4fdd\u5728\u6e1b\u5c11\u5eab\u5b58\u7684\u540c\u6642\uff0c\u8a18\u9304\u4e0b\u6700\u5f8c\u552e\u51fa\u7684\u6642\u9593\u3002<\/p>\n
3. \u4f7f\u7528 Lua \u8173\u672c<\/h3>\n
Redis \u652f\u6301\u4f7f\u7528 Lua \u8173\u672c\u4f86\u57f7\u884c\u8907\u96dc\u7684\u64cd\u4f5c\u3002\u9019\u6a23\u53ef\u4ee5\u5728\u670d\u52d9\u5668\u7aef\u57f7\u884c\u591a\u500b\u547d\u4ee4\uff0c\u5f9e\u800c\u63d0\u9ad8\u6027\u80fd\u4e26\u78ba\u4fdd\u539f\u5b50\u6027\u3002\u4f8b\u5982\uff1a<\/p>\n
eval \"if redis.call('get', KEYS[1]) > ARGV[1] then return redis.call('decrby', KEYS[1], ARGV[1]) else return -1 end\" 1 product:123:stock 5<\/code><\/pre>\n
\u9019\u6bb5\u8173\u672c\u6703\u6aa2\u67e5\u5eab\u5b58\u662f\u5426\u8db3\u5920\uff0c\u7136\u5f8c\u518d\u9032\u884c\u6e1b\u5c11\u64cd\u4f5c\u3002<\/p>\n
4. \u8a2d\u7f6e\u904e\u671f\u6642\u9593<\/h3>\n
\u5728\u67d0\u4e9b\u60c5\u6cc1\u4e0b\uff0c\u5546\u54c1\u5eab\u5b58\u53ef\u80fd\u6703\u56e0\u70ba\u672a\u4ed8\u6b3e\u8a02\u55ae\u800c\u88ab\u66ab\u6642\u4fdd\u7559\u3002\u53ef\u4ee5\u4f7f\u7528 Redis \u7684\u904e\u671f\u6642\u9593\u529f\u80fd\uff0c\u5c07\u5eab\u5b58\u8a2d\u7f6e\u70ba\u5728\u4e00\u5b9a\u6642\u9593\u5f8c\u81ea\u52d5\u91cb\u653e\u3002\u4f8b\u5982\uff1a<\/p>\n
SETEX product:123:stock 3600 10<\/code><\/pre>\n
\u9019\u689d\u547d\u4ee4\u6703\u5c07\u5546\u54c1 ID \u70ba 123 \u7684\u5eab\u5b58\u8a2d\u7f6e\u70ba 10\uff0c\u4e26\u5728 3600 \u79d2\u5f8c\u81ea\u52d5\u904e\u671f\u3002<\/p>\n
\u7e3d\u7d50<\/h2>\n
\u5728\u4f7f\u7528 Redis \u9032\u884c\u5546\u54c1\u5eab\u5b58\u7ba1\u7406\u6642\uff0c\u9078\u64c7\u5408\u9069\u7684\u65b9\u6cd5\u548c\u6280\u5de7\u81f3\u95dc\u91cd\u8981\u3002\u901a\u904e\u539f\u5b50\u64cd\u4f5c\u3001\u4e8b\u52d9\u3001Lua \u8173\u672c\u548c\u904e\u671f\u6642\u9593\u7b49\u529f\u80fd\uff0c\u53ef\u4ee5\u6709\u6548\u5730\u6e1b\u5c11\u5eab\u5b58\u4e26\u907f\u514d\u8d85\u8ce3\u7684\u60c5\u6cc1\u3002\u9019\u4e9b\u6280\u8853\u4e0d\u50c5\u63d0\u9ad8\u4e86\u7cfb\u7d71\u7684\u6027\u80fd\uff0c\u9084\u589e\u5f37\u4e86\u6578\u64da\u7684\u4e00\u81f4\u6027\u548c\u53ef\u9760\u6027\u3002<\/p>\n
\u5982\u679c\u60a8\u6b63\u5728\u5c0b\u627e\u9ad8\u6548\u7684 VPS<\/a> \u89e3\u6c7a\u65b9\u6848\u4f86\u652f\u6301\u60a8\u7684\u96fb\u5b50\u5546\u52d9\u5e73\u53f0\uff0cServer.HK \u63d0\u4f9b\u591a\u7a2e\u9078\u64c7\uff0c\u5e6b\u52a9\u60a8\u8f15\u9b06\u7ba1\u7406\u60a8\u7684\u696d\u52d9\u9700\u6c42\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
\u5b78\u7fd2\u5982\u4f55\u5728 Redis \u4e2d\u6709\u6548\u6e1b\u5c11\u5546\u54c1\u5eab\u5b58\uff0c\u638c\u63e1\u6280\u5de7\u8207\u7ac5\u9580\uff0c\u63d0\u5347\u5eab\u5b58\u7ba1\u7406\u6548\u7387\uff0c\u907f\u514d\u8d85\u8ce3\u554f\u984c\u3002<\/p>\n","protected":false},"author":0,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[101],"tags":[],"class_list":["post-153197","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/153197","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/types\/post"}],"replies":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/comments?post=153197"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/153197\/revisions"}],"predecessor-version":[{"id":153198,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/153197\/revisions\/153198"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=153197"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=153197"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=153197"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}