{"id":440,"date":"2024-09-02T00:57:28","date_gmt":"2024-09-01T16:57:28","guid":{"rendered":"https:\/\/forelink.top\/?p=440"},"modified":"2024-09-02T00:57:29","modified_gmt":"2024-09-01T16:57:29","slug":"redis%e5%ad%97%e7%ac%a6%e4%b8%b2","status":"publish","type":"post","link":"https:\/\/forelink.top\/index.php\/2024\/09\/02\/redis%e5%ad%97%e7%ac%a6%e4%b8%b2\/","title":{"rendered":"Redis\u5b57\u7b26\u4e32"},"content":{"rendered":"\n

\u7b80\u4ecb\uff1a<\/h2>\n\n\n\n

String\u662fRedis\u6700\u57fa\u672c\u7684\u7c7b\u578b\uff0c\u53ef\u4ee5\u7406\u89e3\u6210\u4e0e Memcached<\/strong> \u4e00\u6a21\u4e00\u6837\u7684\u6a21\u578b\uff0c \u4e00\u4e2a key<\/strong> \u5bf9\u5e94\u4e00\u4e2a value<\/strong> \uff08Memcached \u662f\u4e00\u4e2a\u9ad8\u6027\u80fd\u7684\u5206\u5e03\u5f0f\u5185\u5b58\u5bf9\u8c61\u7f13\u5b58\u7cfb\u7edf\uff0c\u7528\u4e8e\u52a8\u6001web\u5e94\u7528\uff0c\u4ee5\u51cf\u8f7b\u6570\u636e\u5e93\u8d1f\u8f7d\uff09\nString\u7c7b\u578b\u662f \u4e8c\u8fdb\u5236\u5b89\u5168<\/strong> \u7684\u3002\u610f\u5473\u7740 Redis<\/strong> \u7684 string \u53ef\u4ee5\u5305\u542b\u4efb\u4f55\u6570\u636e\u3002\u6bd4\u5982 jpg\u56fe\u7247\uff0c\u6216\u8005 \u5e8f\u5217\u5316\u7684\u5bf9\u8c61<\/strong>\nString \u7c7b\u578b\u662f Redis<\/strong> \u6700\u57fa\u672c\u7684\u6570\u636e\u7c7b\u578b\uff0c\u4e00\u4e2a Redis<\/strong> \u4e2d\u5b57\u7b26\u4e32 value<\/strong> \u6700\u591a\u53ef\u4ee5\u662f512M <\/p>\n\n\n\n

\u5e38\u7528\u547d\u4ee4\uff1a<\/h2>\n\n\n\n
\/\/ \u8bbe\u7f6e\u503c\u4e0e\u53d6\u503c\nset [key] [value] [EX seconds | PX milliseconds|KEEPTLL] [NX|XX]\nget [key]\n\u5f53\u8bbe\u7f6e\u7684key\u5df2\u5b58\u5728\u65f6\uff0ckey\u7684\u65b0\u589evalue\u4f1a\u88ab\u8986\u76d6\n\nappend [key] [value] \u5c06\u7ed9\u5b9a\u7684value\u8ffd\u52a0\u5230\u539f\u6765\u503c\u7684\u672b\u5c3e\n                    \u4f1a\u8fd4\u56de\u65b0value\u7684\u957f\u5ea6\uff0c\u5982\u679ckey\u4e0d\u5b58\u5728\uff0c\u521b\u5efa\u4e00\u4e2a\u503c\u4e3avalue\u7684key\nstrlen [key] \u83b7\u53d6key\u5bf9\u5e94value\u7684\u957f\u5ea6\nsetnx [key] [value] \u53ea\u6709\u5728 key \u4e0d\u5b58\u5728\u65f6\uff0c \u624d\u8bbe\u7f6ekey\u7684\u503c \n                    \u8fd4\u56de0\u65f6\uff0c\u8868\u793akey\u5df2\u5b58\u5728\n                    \nincr [key] \u5c06\u7ed9\u5b9akey\u7684\u503c+1 \/ incrby [key] [step] \u503c\u52a0step\ndecr [key] \u5c06\u7ed9\u5b9akey\u7684\u503c-1 \/ decrby [key] [step] \u503c\u51cfstep\n\nmset [key1] [value] [key2] [value] ... \u540c\u65f6\u8bbe\u7f6e\u4e00\u4e2a\u6216\u8005\u591a\u4e2akey-value\nmget [key1] [key2] ... \u540c\u65f6\u83b7\u5f97\u591a\u4e2a value\nmsetnx [key1] [value] [key2] [value] ... \u6240\u6709\u7684key\u90fd\u4e0d\u5b58\u5728\u65f6\uff0c\u540c\u65f6\u8bbe\u7f6e\u4e00\u4e2a\u6216\u8005\u591a\u4e2akey-value \uff0c\u5426\u5219\u8bbe\u7f6e\u4e0d\u6210\u529f \uff08\u539f\u5b50\u6027\uff09\n\ngetrange [key] [st] [ed] \u83b7\u53d6key\u539fvalue\u4e2d[st,ed]\u7684value\nsetrange [key] [st] [value] \u5728key\u539fvalue\u4e2dst\u7684\u4f4d\u7f6e\uff0c\u4ee5\u63d2\u5165\u6a21\u5f0f\u52a0\u5165value\n\nsetex [key] [TTLTime] [value] \u8bbe\u7f6ekey-value\u7684\u540c\u65f6\uff0c\u8bbe\u7f6e\u8fc7\u671f\u65f6\u95f4\ngetset [key] [value] \u5c06key\u7684\u503c\u8bbe\u4e3avalue\uff0c\u5e76\u8fd4\u56dekey\u7684\u539f\u503c\n<\/code><\/pre>\n\n\n\n
\u7ebf\u7a0b\uff1a<\/h2>\n\n\n\n
incr\u662f\u539f\u5b50\u64cd\u4f5c\uff0c\u4e0d\u4f1a\u88ab\u7ebf\u7a0b\u8c03\u5ea6\u673a\u5236\u6253\u65ad\u3002<\/p>\n\n\n\n
\u8fd9\u79cd\u64cd\u4f5c\u4e00\u65e6\u5f00\u59cb\uff0c\u5c31\u4e00\u76f4\u8fd0\u884c\u5230\u7ed3\u675f\uff0c\u4e2d\u95f4\u4e0d\u4f1a\u6709\u4efb\u4f55 context switch\uff08\u7ebf\u7a0b\u5207\u6362\uff09<\/p>\n\n\n\n
    \n
  1. \u5728\u5355\u7ebf\u7a0b\u4e2d\uff0c\u80fd\u591f\u5728\u5355\u6761\u6307\u4ee4\u4e2d\u5b8c\u6210\u7684\u64cd\u4f5c\uff0c\u90fd\u53ef\u4ee5\u8ba4\u4e3a\u662f\u539f\u5b50\u64cd\u4f5c\uff0c\u4e2d\u65ad\u53ea\u80fd\u53d1\u751f\u4e8e\u6307\u4ee4\u4e4b\u95f4\u3002<\/p>
    <\/li>\n\n\n\n
  2. \u5728\u591a\u7ebf\u7a0b\u4e2d\uff0c\u4e0d\u80fd\u88ab\u5176\u4ed6\u8fdb\u7a0b\uff08\u7ebf\u7a0b\uff09\u6253\u65ad\u7684\u64cd\u4f5c\u5c31\u662f\u539f\u5b50\u64cd\u4f5c\u3002Redis\u5355\u547d\u4ee4\u7684\u539f\u5b50\u6027\u4e3b\u8981\u5f97\u76ca\u4e8eRedis\u7684\u5355\u7ebf\u7a0b\u3002<\/p>
    <\/li>\n<\/ol>\n\n\n\n
    java\u7684i++\u5e76\u975e\u662f\u539f\u5b50\u64cd\u4f5c\n\u4e24\u4e2a\u7ebf\u7a0b\u540c\u65f6\u8fdb\u884ci++\u64cd\u4f5c100\u6b21\uff0c\u7ed3\u679c\u4f1a\u57282-200\u4e4b\u95f4\u3002\n\n\u6700\u5927\u7684\u60c5\u51b5\uff08200\uff09\u4f1a\u662f\u4e24\u4e2a\u7ebf\u7a0b\u4e92\u4e0d\u5e72\u6270\u3002\n\u6700\u5c0f\u7684\u60c5\u51b5\uff082\uff09\u4e24\u4e2a\u7ebf\u7a0b\u7684\u64cd\u4f5c\u4f1a\u88ab\u4e92\u76f8\u5e72\u6270\uff0c\u53ea\u6709\u7b2c\u4e00\u6b21\u548c\u6700\u540e\u4e00\u6b21\u6267\u884c\u6210\u529f\u4e86\u3002\n\n\u672c\u4f8b\u4e2d\u7684i++\u5e76\u975e\u4e3a\u539f\u5b50\u64cd\u4f5c\u3002\n<\/code><\/pre>\n\n\n\n
    \u6570\u636e\u7ed3\u6784\uff1a<\/h2>\n\n\n\n
    String \u7684\u6570\u636e\u7ed3\u6784\u4e3a\u7b80\u5355\u52a8\u6001\u5b57\u7b26\u4e32SDS (Simple Dynamic String)\uff0c\u662f\u53ef\u4ee5\u4fee\u6539\u7684\u5b57\u7b26\u4e32\uff0c\u5185\u90e8\u7ed3\u6784\u5b9e\u73b0\u4e0a\u7c7b\u4f3c\u4e8eJava\u7684ArrayList\uff0c\u91c7\u7528\u9884\u5206\u914d\u5197\u4f59\u7a7a\u95f4\u7684\u65b9\u5f0f\u6765\u51cf\u5c11\u5185\u5b58\u7684\u9891\u7e41\u5206\u914d\u3002<\/p>\n\n\n\n
    \u5728Redis\u4e3a\u5b57\u7b26\u4e32\u5206\u914d\u7a7a\u95f4\u65f6\uff0c\u4e3a\u5b57\u7b26\u4e32\u5b9e\u9645\u5206\u914d\u7684\u7a7a\u95f4capacity\u4e00\u822c\u8fdc\u9ad8\u4e8e\u5b9e\u9645\u5b57\u7b26\u4e32\u7684\u957f\u5ea6\u3002\u5728\u5b57\u7b26\u4e32String\u6700\u5927\u957f\u5ea6\u4e3a512M\u7684\u9650\u5236\u4e0b\uff0c\u5f53\u5b57\u7b26\u4e32\u957f\u5ea6\u5c0f\u4e8e1M\u65f6\uff0c\u6269\u5bb9\u52a0\u500d\u73b0\u6709\u7684\u7a7a\u95f4\u3002\u5982\u679c\u8d85\u8fc71M\uff0c\u6269\u5bb9\u65f6\u53ea\u4f1a\u591a\u6269\u5bb91M\u7684\u7a7a\u95f4\u3002\n<\/code><\/pre>\n","protected":false},"excerpt":{"rendered":"
    \u7b80\u4ecb\uff1a String\u662fRedis\u6700\u57fa\u672c\u7684\u7c7b\u578b\uff0c\u53ef\u4ee5\u7406\u89e3\u6210\u4e0e Memcached \u4e00\u6a21\u4e00\u6837\u7684\u6a21\u578b\uff0c \u4e00\u4e2a key […]<\/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-440","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\/440","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=440"}],"version-history":[{"count":1,"href":"https:\/\/forelink.top\/index.php\/wp-json\/wp\/v2\/posts\/440\/revisions"}],"predecessor-version":[{"id":441,"href":"https:\/\/forelink.top\/index.php\/wp-json\/wp\/v2\/posts\/440\/revisions\/441"}],"wp:attachment":[{"href":"https:\/\/forelink.top\/index.php\/wp-json\/wp\/v2\/media?parent=440"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/forelink.top\/index.php\/wp-json\/wp\/v2\/categories?post=440"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/forelink.top\/index.php\/wp-json\/wp\/v2\/tags?post=440"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}