\u52a0\u5165\u7248\u672c\u6807\u8bc6\uff0c\u6839\u636e\u7248\u672c\u8fdb\u884c\u64cd\u4f5c\u3002\n\u4e50\u89c2\u9501\u9002\u7528\u4e8e\u591a\u8bfb\u7684\u5e94\u7528\u7c7b\u578b\uff0c\u63d0\u9ad8\u541e\u5410\u91cf\u3002<\/p>\n\n\n\n
Redis\u5229\u7528check set\u673a\u5236\u5b9e\u73b0\u4e8b\u52a1\u3002<\/p>\n\n\n\n
\u5728\u6267\u884cmulti\u524d\uff0c\u5148\u6267\u884c watch key\n\u76d1\u89c6\u4e00\u4e2a\/\u591a\u4e2akey\uff0c\u5982\u679c\u5728\u6267\u884c\u4e8b\u52a1\u4e4b\u524d\uff0c\u6709key\u88ab\u5176\u4ed6\u547d\u4ee4\u6539\u52a8\uff0c\u4e8b\u52a1\u88ab\u6253\u65ad<\/p>\n\n\n\n
\u6267\u884c\u4e8b\u52a1\u4f1a\u8fd4\u56de(nil)\uff0c\u4e8b\u52a1\u6ca1\u6709\u6267\u884c\u3002<\/p>\n\n\n\n
watch [key1] [key2] ...\n<\/code><\/pre>\n\n\n\nunwatch key<\/h3>\n\n\n\n
\u53d6\u6d88\u5148\u524d\u5728key\u4e0a\u8bbe\u7f6e\u7684watch\u76d1\u89c6\u547d\u4ee4<\/p>\n\n\n\n
unwatch [key1] [key2] ...\n<\/code><\/pre>\n\n\n\n\u53d6\u6d88watch<\/p>\n\n\n\n
Redis\u4e8b\u52a1\u4e09\u7279\u6027\uff1a<\/h2>\n\n\n\n\n\u5355\u72ec\u7684\u9694\u79bb\u64cd\u4f5c<\/p>
\u4e8b\u52a1\u4e2d\u7684\u6240\u6709\u547d\u4ee4\u90fd\u4f1a\u5e8f\u5217\u5316\uff0c\u6309\u987a\u5e8f\u7684\u6267\u884c\u3002\u5728\u4e8b\u52a1\u7684\u6267\u884c\u8fc7\u7a0b\u4e2d\uff0c\u4e0d\u4f1a\u88ab\u5176\u4ed6\u5ba2\u6237\u7aef\u53d1\u9001\u6765\u7684\u547d\u4ee4\u6240\u6253\u65ad<\/p>
<\/li>\n\n\n\n
\u6ca1\u6709\u9694\u79bb\u7ea7\u522b\u7684\u6982\u5ff5<\/p>
\u961f\u5217\u4e2d\u7684\u4efb\u4f55\u547d\u4ee4\u5728\u63d0\u4ea4\u4e4b\u524d\u90fd\u4e0d\u4f1a\u5b9e\u9645\u6267\u884c\uff0c\u56e0\u4e3a\u4e8b\u52a1\u63d0\u4ea4\u524d\u4efb\u4f55\u6307\u4ee4\u90fd\u4e0d\u4f1a\u88ab\u5b9e\u9645\u6267\u884c<\/p>
<\/li>\n\n\n\n
\u4e0d\u4fdd\u8bc1\u539f\u5b50\u6027<\/p>
\u4e8b\u52a1\u4e2d\u5982\u679c\u6709\u4e00\u6761\u547d\u4ee4\u6267\u884c\u5931\u8d25\uff0c\u5176\u540e\u7684\u547d\u4ee4\u4ecd\u7136\u4f1a\u88ab\u6267\u884c\uff0c\u6ca1\u6709\u56de\u6eda\u3002<\/p>
<\/li>\n<\/ol>\n\n\n\n
## \u60b2\u89c2\u9501\n\n### \u7b80\u4ecb\uff1a\n\n\u5728\u8fdb\u884c\u6570\u636e\u5904\u7406\u65f6\u4f1a\u4e0a\u9501\u3002\n\u4f20\u7edf\u7684\u5173\u7cfb\u578b\u6570\u636e\u5e93\u7528\u5230\u4e86 \u884c\u9501\uff0c\u8868\u9501\u7b49\uff0c\u8bfb\u9501\u5199\u9501\u7b49\u3002\n\u90fd\u662f\u5728\u64cd\u4f5c\u4e4b\u524d\u5148\u4e0a\u9501\n<\/code><\/pre>\n\n\n\n\u793a\u4f8b\uff08\u4e50\u89c2\u9501\uff09<\/h2>\n\n\n\n\u9700\u8981\u591a\u6b21\u8c03\u7528\u7684\u65b9\u6cd5\uff1a<\/h3>\n\n\n\n@GetMapping(\"\/SecKill\/{uid}\/{goods}\")\n @ResponseBody\n public boolean doSecKill(@PathVariable(\"uid\") String uid, @PathVariable(\"goods\") String goods){\n System.out.println(\"uid: \"+uid+\" goods: \"+goods);\n\n \/\/ \u5efa\u7acbredis\u8fde\u63a5\n Jedis jedis = new Jedis(\"192.168.199.129\",6379);\n \/\/ 1 uid\u548cgoods\u975e\u7a7a\u5224\u65ad\n if(uid == null || goods ==null){\n return false;\n }\n \/\/ 2 \u5e93\u5b58key\n String stockKey = \"sk:\"+goods+\":qt\";\n \/\/ 3 \u79d2\u6740\u6210\u529f\u7528\u6237key\n String userKey = \"sk:\"+goods+\":user\";\n \/\/ 4 \u83b7\u53d6\u5e93\u5b58\uff0c\u5982\u679c\u5e93\u5b58null\uff0c\u79d2\u6740\u8fd8\u6ca1\u6709\u5f00\u59cb\n String stock = jedis.get(stockKey);\n if(stock == null){\n System.out.println(\"\u79d2\u6740\u8fd8\u6ca1\u6709\u5f00\u59cb\uff0c\u8bf7\u7a0d\u7b49\");\n jedis.close();\n return false;\n }\n \/\/ 5 \u5224\u65ad\u7528\u6237\u662f\u5426\u91cd\u590d\u64cd\u4f5c\n if(jedis.sismember(userKey,uid)){\n System.out.println(\"\u60a8\u5df2\u7ecf\u79d2\u6740\u8fc7\u8be5\u5546\u54c1\");\n jedis.close();\n return false;\n }\n \/\/ 6 \u5224\u65ad\u662f\u5426\u8fd8\u6709\u5e93\u5b58\n if(Integer.parseInt(stock)<=0){\n System.out.println(\"\u79d2\u6740\u5df2\u7ecf\u7ed3\u675f\u4e86\");\n jedis.close();\n return false;\n }\n \/\/ 7 \u79d2\u6740\u8fc7\u7a0b\n \/\/ \u5e93\u5b58-1\n jedis.decr(stockKey);\n \/\/ \u628a\u79d2\u6740\u7528\u6237\u6dfb\u52a0\u8fdb\u6e05\u5355\u4e2d\n jedis.sadd(userKey,uid);\n System.out.println(\"\u79d2\u6740\u6210\u529f\u4e86\");\n jedis.close();\n return true;\n\n }\n<\/code><\/pre>\n\n\n\n\u4e0b\u8f7dab\u5de5\u5177\u6a21\u62df\u9ad8\u5e76\u53d1<\/h3>\n\n\n\nyum install httpd-tools\n<\/code><\/pre>\n\n\n\nab \u5e38\u7528\u53c2\u6570\n -n requests \u8bf7\u6c42\u6b21\u6570\n -c concurrency \u540c\u65f6\u8fdb\u884c\u7684\u6b21\u6570\n -T content-type \u63d0\u4ea4\u6a21\u5f0f{GET\/POST...}\n -p postfile \u6587\u4ef6\uff0c\u4ee5post\u65b9\u5f0f\u63d0\u4ea4\n\/\/ \u5411\u8bf7\u6c42\u8def\u5f84\u4ee5-T\u6807\u6ce8\u7684\u7c7b\u578b\u53d1\u9001\u5305\u542b-p\u6807\u6ce8\u7684\u6587\u4ef6\u5939\u5171\u8ba11000\u6b21\uff0c\u4e00\u6b21100\u4e2a\u8bf7\u6c42\u3002\nab -n 1000 -c 100 -p {\u8def\u5f84\/\u6587\u4ef6\u540d} -T {\u7c7b\u578b} {\u8bf7\u6c42\u8def\u5f84}\n<\/code><\/pre>\n\n\n\n\/\/ \u6a21\u62df\u4e00\u6b21\u9ad8\u5e76\u53d1\nab -n 500 -c 160 http:\/\/192.168.8.155:8080\/redis\/SecKill\/1\/2\n<\/code><\/pre>\n\n\n\n\u9ad8\u5e76\u53d1\u89e3\u51b3<\/h3>\n\n\n\n\u8fde\u63a5\u8d85\u65f6\u95ee\u9898\uff1a<\/h4>\n\n\n\n
\u5f80\u5f80\u662f\u8fde\u63a5\u6c60\u95ee\u9898\uff0c\u5efa\u7acb\u4e00\u4e2a\u8fde\u63a5\u6c60\u7c7b\uff0c\u5148\u5efa\u7acbjedis\u8fde\u63a5\u6c60\u5bf9\u8c61\uff0c\u518d\u901a\u8fc7jedis\u8fde\u63a5\u6c60\u5bf9\u8c61\u5efa\u7acbjedis\u5bf9\u8c61<\/p>\n\n\n\n
\u8d85\u5356\u95ee\u9898\uff1a<\/h4>\n\n\n\n
\u9700\u8981\u6dfb\u52a0\u4e50\u89c2\u9501\uff0c\u76d1\u89c6\u591aIO\u51b2\u7a81\u3002<\/p>\n\n\n\n
\/\/ \u76d1\u89c6\u5e93\u5b58\njedis.watch(StockKey);\n\n\/\/ \u6dfb\u52a0\u4e8b\u52a1\nTransaction multi_ = jedis.multi();\n\n\/\/ \u547d\u4ee4\u52a0\u5165\u4e8b\u52a1\nmulti_.decr(StockKey);\nmulti_.sadd(userKey,uid);\n\n\/\/ \u6267\u884c\nList<Object> results = multi_.exec();\n\n\/\/ \u5224\u65ad\nif(results == null || results.size()==0){\n sout(\u79d2\u6740\u5931\u8d25\u4e86);\n jedis.close();\n return false;\n}\n<\/code><\/pre>\n\n\n\n\u4e50\u89c2\u9501\u5e93\u5b58\u9057\u7559\u95ee\u9898\uff1a<\/h4>\n\n\n\n
\u56e0\u4e3a\u7248\u672c\u53f7\u4e0d\u4e00\u81f4\uff0c\u5931\u8d25\u3002<\/p>\n\n\n\n
\u4f7f\u7528\u811a\u672c\u8bed\u8a00Lua\nLua\u662f\u4e00\u4e2a\u5c0f\u5de7\u7684\u811a\u672c\u8bed\u8a00\uff0c\u89e3\u91ca\u5668\u4ec5200k\uff0c\u9002\u5408\u4f5c\u4e3a\u5d4c\u5165\u5f0f\u811a\u672c\u8bed\u8a00\u3002\n\u6765\u5b9e\u73b0\u53ef\u914d\u7f6e\u6027\uff0c\u53ef\u6269\u5c55\u6027\u3002<\/p>\n\n\n\n
Lua \u811a\u672c\u53ef\u4ee5\u5c06\u590d\u6742\u7684\u6216\u8005\u591a\u6b65\u7684redis\u64cd\u4f5c\uff0c\u5199\u4e3a\u4e00\u4e2a\u811a\u672c\uff0c\u4e00\u6b21\u63d0\u4ea4\u7ed9redis\u6267\u884c\uff0c\u51cf\u5c11\u53cd\u590d\u8fde\u63a5redis\u7684\u6b21\u6570\u3002\u63d0\u5347\u6027\u80fd<\/p>\n\n\n\n
\u901a\u8fc7lua\u811a\u672c\u89e3\u51b3\u4e89\u62a2\u95ee\u9898\uff0c\u5b9e\u9645\u4e0a\u5c31\u662f\u5229\u7528\u4e86redis\u4efb\u52a1\u961f\u5217\u7684\u65b9\u5f0f\u89e3\u51b3\u591a\u4efb\u52a1\u5e76\u53d1\u95ee\u9898\u3002<\/p>\n\n\n\n
local userid=KEYS[1];\nlocal goods=KEYS[2];\nlocal qtkey=\"sk:\"..goods..\":qt\";\nlocal usersKey=\"sk:\"..goods..\":user\";\nlocal userExists = redis.call(\"sismember\",userKey,userid);\nif tonumber(userExists)==1 then\n \/\/ \u8868\u793a\u5df2\u7ecf\u79d2\u6740\u8fc7\u5546\u54c1\n return 2;\nend\n......\n<\/code><\/pre>\n\n\n\nLua\u811a\u672c\u662f\u7c7b\u4f3credis\u4e8b\u52a1\uff0c\u6709\u539f\u5b50\u6027\u3002\n\u4f46redis\u7684lua\u811a\u672c\u529f\u80fd\uff0c\u53ea\u6709\u5728Redis 2.6\u4ee5\u4e0a\u7684\u811a\u672c\u624d\u53ef\u4ee5\u4f7f\u7528\u3002\n<\/code><\/pre>\n\n\n\n+Jmeter+<\/h2>\n\n\n\nJmeter\u5bf9\u4e8e\u5e76\u53d1\u6d4b\u8bd5\uff0c\u662f\u66f4\u4e3a\u4e13\u4e1a\u7684\u5de5\u5177\u3002\n<\/code><\/pre>\n","protected":false},"excerpt":{"rendered":"\u4e50\u89c2\u9501 \u7b80\u4ecb \u52a0\u5165\u7248\u672c\u6807\u8bc6\uff0c\u6839\u636e\u7248\u672c\u8fdb\u884c\u64cd\u4f5c\u3002 \u4e50\u89c2\u9501\u9002\u7528\u4e8e\u591a\u8bfb\u7684\u5e94\u7528\u7c7b\u578b\uff0c\u63d0\u9ad8\u541e\u5410\u91cf\u3002 Redis\u5229\u7528che […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_import_markdown_pro_load_document_selector":0,"_import_markdown_pro_submit_text_textarea":"","footnotes":""},"categories":[40,39],"tags":[],"class_list":["post-461","post","type-post","status-publish","format-standard","hentry","category-redis","category-39"],"_links":{"self":[{"href":"https:\/\/forelink.top\/index.php\/wp-json\/wp\/v2\/posts\/461","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/forelink.top\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/forelink.top\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/forelink.top\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/forelink.top\/index.php\/wp-json\/wp\/v2\/comments?post=461"}],"version-history":[{"count":1,"href":"https:\/\/forelink.top\/index.php\/wp-json\/wp\/v2\/posts\/461\/revisions"}],"predecessor-version":[{"id":462,"href":"https:\/\/forelink.top\/index.php\/wp-json\/wp\/v2\/posts\/461\/revisions\/462"}],"wp:attachment":[{"href":"https:\/\/forelink.top\/index.php\/wp-json\/wp\/v2\/media?parent=461"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/forelink.top\/index.php\/wp-json\/wp\/v2\/categories?post=461"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/forelink.top\/index.php\/wp-json\/wp\/v2\/tags?post=461"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}