{"id":345,"date":"2024-03-21T23:42:33","date_gmt":"2024-03-21T15:42:33","guid":{"rendered":"http:\/\/www.madbull.site\/?p=345"},"modified":"2026-03-03T10:48:20","modified_gmt":"2026-03-03T02:48:20","slug":"redis%e5%9f%ba%e7%a1%80%e6%8c%87%e4%bb%a4-key%e9%94%ae","status":"publish","type":"post","link":"https:\/\/www.madbull.site\/?p=345","title":{"rendered":"Redis\u57fa\u7840\u6307\u4ee4–KEY\u952e"},"content":{"rendered":"\n
\n

1 DEL key<\/strong><\/p>\n\n\n\n

\u8be5\u547d\u4ee4\u7528\u4e8e\u5728 key \u5b58\u5728\u65f6\u5220\u9664 key\u3002<\/p>\n\n\n\n

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

2 DUMP key<\/strong><\/p>\n\n\n\n

\u5e8f\u5217\u5316\u7ed9\u5b9a key \uff0c\u5e76\u8fd4\u56de\u88ab\u5e8f\u5217\u5316\u7684\u503c\u3002<\/p>\n\n\n\n

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

3 EXISTS key<\/strong><\/p>\n\n\n\n

\u68c0\u67e5\u7ed9\u5b9a key \u662f\u5426\u5b58\u5728\u3002<\/p>\n\n\n\n

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

4 EXPIRE key seconds<\/strong><\/p>\n\n\n\n

\u4e3a\u7ed9\u5b9a key \u8bbe\u7f6e\u8fc7\u671f\u65f6\u95f4\uff0c\u4ee5\u79d2\u8ba1\u3002<\/p>\n\n\n\n

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

5 EXPIREAT key timestamp<\/strong><\/p>\n\n\n\n

EXPIREAT \u7684\u4f5c\u7528\u548c EXPIRE \u7c7b\u4f3c\uff0c\u90fd\u7528\u4e8e\u4e3a key \u8bbe\u7f6e\u8fc7\u671f\u65f6\u95f4\u3002 \u4e0d\u540c\u5728\u4e8e EXPIREAT \u547d\u4ee4\u63a5\u53d7\u7684\u65f6\u95f4\u53c2\u6570\u662f UNIX \u65f6\u95f4\u6233(unix timestamp)\u3002<\/p>\n\n\n\n

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

6 PEXPIRE key milliseconds<\/strong><\/p>\n\n\n\n

\u8bbe\u7f6e key \u7684\u8fc7\u671f\u65f6\u95f4\u4ee5\u6beb\u79d2\u8ba1\u3002<\/p>\n\n\n\n

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

7 PEXPIREAT key milliseconds-timestamp<\/strong><\/p>\n\n\n\n

\u8bbe\u7f6e key \u8fc7\u671f\u65f6\u95f4\u7684\u65f6\u95f4\u6233(unix timestamp) \u4ee5\u6beb\u79d2\u8ba1<\/p>\n\n\n\n

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

8 KEYS pattern<\/strong><\/p>\n\n\n\n

\u67e5\u627e\u6240\u6709\u7b26\u5408\u7ed9\u5b9a\u6a21\u5f0f( pattern)\u7684 key \u3002<\/p>\n\n\n\n

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

9 MOVE key db<\/strong><\/p>\n\n\n\n

\u5c06\u5f53\u524d\u6570\u636e\u5e93\u7684 key \u79fb\u52a8\u5230\u7ed9\u5b9a\u7684\u6570\u636e\u5e93 db \u5f53\u4e2d\u3002<\/p>\n\n\n\n

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

10 PERSIST key<\/strong><\/p>\n\n\n\n

\u79fb\u9664 key \u7684\u8fc7\u671f\u65f6\u95f4\uff0ckey \u5c06\u6301\u4e45\u4fdd\u6301\u3002<\/p>\n\n\n\n

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

11 PTTL key<\/strong><\/p>\n\n\n\n

\u4ee5\u6beb\u79d2\u4e3a\u5355\u4f4d\u8fd4\u56de key \u7684\u5269\u4f59\u7684\u8fc7\u671f\u65f6\u95f4\u3002<\/p>\n\n\n\n

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

12 TTL key<\/strong><\/p>\n\n\n\n

\u4ee5\u79d2\u4e3a\u5355\u4f4d\uff0c\u8fd4\u56de\u7ed9\u5b9a key \u7684\u5269\u4f59\u751f\u5b58\u65f6\u95f4(TTL, time to live)\u3002<\/p>\n\n\n\n

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

13 RANDOMKEY<\/strong><\/p>\n\n\n\n

\u4ece\u5f53\u524d\u6570\u636e\u5e93\u4e2d\u968f\u673a\u8fd4\u56de\u4e00\u4e2a key \u3002<\/p>\n\n\n\n

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

14 RENAME key newkey<\/strong><\/p>\n\n\n\n

\u4fee\u6539 key \u7684\u540d\u79f0<\/p>\n\n\n\n

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

15 RENAMENX key newkey<\/strong><\/p>\n\n\n\n

\u4ec5\u5f53 newkey \u4e0d\u5b58\u5728\u65f6\uff0c\u5c06 key \u6539\u540d\u4e3a newkey \u3002<\/p>\n\n\n\n

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

16 SCAN cursor [MATCH pattern] [COUNT count]<\/strong><\/p>\n\n\n\n

\u8fed\u4ee3\u6570\u636e\u5e93\u4e2d\u7684\u6570\u636e\u5e93\u952e\u3002<\/p>\n\n\n\n

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

17 TYPE key<\/strong><\/p>\n\n\n\n

\u8fd4\u56de key \u6240\u50a8\u5b58\u7684\u503c\u7684\u7c7b\u578b\u3002<\/p>\n\n\n\n

<\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"

1 DEL key
\n\u8be5\u547d\u4ee4\u7528\u4e8e\u5728 key \u5b58\u5728\u65f6\u5220\u9664 key\u3002
\n2 DUMP key
\n\u5e8f\u5217\u5316\u7ed9\u5b9a key \uff0c\u5e76\u8fd4\u56de\u88ab\u5e8f\u5217\u5316\u7684\u503c\u3002
\n3 EXISTS key
\n\u68c0\u67e5\u7ed9\u5b9a key \u662f\u5426\u5b58\u5728\u3002
\n4 EXPIRE key seconds
\n\u4e3a\u7ed9\u5b9a key \u8bbe\u7f6e\u8fc7\u671f\u65f6\u95f4\uff0c\u4ee5\u79d2\u8ba1\u3002<\/p>\n","protected":false},"author":1,"featured_media":52,"comment_status":"open","ping_status":"open","sticky":false,"template":"single-with-sidebar","format":"standard","meta":{"footnotes":""},"categories":[115,5],"tags":[106,15,19,107],"class_list":["post-345","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-redis","category-database","tag-key","tag-redis","tag-19","tag-107"],"_links":{"self":[{"href":"https:\/\/www.madbull.site\/index.php?rest_route=\/wp\/v2\/posts\/345","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.madbull.site\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.madbull.site\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.madbull.site\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.madbull.site\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=345"}],"version-history":[{"count":3,"href":"https:\/\/www.madbull.site\/index.php?rest_route=\/wp\/v2\/posts\/345\/revisions"}],"predecessor-version":[{"id":2482,"href":"https:\/\/www.madbull.site\/index.php?rest_route=\/wp\/v2\/posts\/345\/revisions\/2482"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.madbull.site\/index.php?rest_route=\/wp\/v2\/media\/52"}],"wp:attachment":[{"href":"https:\/\/www.madbull.site\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=345"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.madbull.site\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=345"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.madbull.site\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=345"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}