{"id":183036,"date":"2024-11-10T01:24:19","date_gmt":"2024-11-09T17:24:19","guid":{"rendered":"https:\/\/server.hk\/cnblog\/183036\/"},"modified":"2024-11-10T01:24:19","modified_gmt":"2024-11-09T17:24:19","slug":"%e5%af%a6%e7%8f%beredis%e9%9a%8a%e5%88%97%e5%9b%ba%e5%ae%9a%e9%95%b7%e5%ba%a6%e7%9a%84%e6%96%b9%e6%b3%95%ef%bc%88redis%e9%9a%8a%e5%88%97%e5%9b%ba%e5%ae%9a%e9%95%b7%e5%ba%a6%ef%bc%89","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/183036\/","title":{"rendered":"\u5be6\u73feRedis\u968a\u5217\u56fa\u5b9a\u9577\u5ea6\u7684\u65b9\u6cd5\uff08redis\u968a\u5217\u56fa\u5b9a\u9577\u5ea6\uff09"},"content":{"rendered":"<h1 id=\"%e5%af%a6%e7%8f%beredis%e9%9a%8a%e5%88%97%e5%9b%ba%e5%ae%9a%e9%95%b7%e5%ba%a6%e7%9a%84%e6%96%b9%e6%b3%95%ef%bc%88redis%e9%9a%8a%e5%88%97%e5%9b%ba%e5%ae%9a%e9%95%b7%e5%ba%a6%ef%bc%89-svUGDmyWhY\">\u5be6\u73feRedis\u968a\u5217\u56fa\u5b9a\u9577\u5ea6\u7684\u65b9\u6cd5\uff08redis\u968a\u5217\u56fa\u5b9a\u9577\u5ea6\uff09<\/h1>\n<p>Redis\u662f\u4e00\u500b\u9ad8\u6548\u7684\u9375\u503c\u6578\u64da\u5eab\uff0c\u5ee3\u6cdb\u61c9\u7528\u65bc\u5404\u7a2e\u5834\u666f\u4e2d\uff0c\u7279\u5225\u662f\u5728\u9700\u8981\u5feb\u901f\u6578\u64da\u5b58\u53d6\u7684\u61c9\u7528\u4e2d\u3002\u7576\u4f7f\u7528Redis\u4f5c\u70ba\u968a\u5217\u6642\uff0c\u53ef\u80fd\u6703\u9047\u5230\u9700\u8981\u9650\u5236\u968a\u5217\u9577\u5ea6\u7684\u60c5\u6cc1\u3002\u9019\u7bc7\u6587\u7ae0\u5c07\u63a2\u8a0e\u5982\u4f55\u5728Redis\u4e2d\u5be6\u73fe\u56fa\u5b9a\u9577\u5ea6\u7684\u968a\u5217\uff0c\u4e26\u63d0\u4f9b\u4e00\u4e9b\u5be6\u7528\u7684\u793a\u4f8b\u548c\u4ee3\u78bc\u7247\u6bb5\u3002<\/p>\n<h2 id=\"%e7%82%ba%e4%bb%80%e9%ba%bc%e9%9c%80%e8%a6%81%e5%9b%ba%e5%ae%9a%e9%95%b7%e5%ba%a6%e7%9a%84%e9%9a%8a%e5%88%97-svUGDmyWhY\">\u70ba\u4ec0\u9ebc\u9700\u8981\u56fa\u5b9a\u9577\u5ea6\u7684\u968a\u5217<\/h2>\n<p>\u56fa\u5b9a\u9577\u5ea6\u7684\u968a\u5217\u5728\u8a31\u591a\u61c9\u7528\u4e2d\u90fd\u975e\u5e38\u6709\u7528\uff0c\u7279\u5225\u662f\u5728\u8655\u7406\u6d88\u606f\u6216\u4efb\u52d9\u6642\u3002\u7576\u968a\u5217\u7684\u9577\u5ea6\u4e0d\u53d7\u9650\u5236\u6642\uff0c\u53ef\u80fd\u6703\u5c0e\u81f4\u5167\u5b58\u4f7f\u7528\u904e\u9ad8\uff0c\u751a\u81f3\u5f71\u97ff\u7cfb\u7d71\u7684\u6027\u80fd\u3002\u901a\u904e\u8a2d\u7f6e\u56fa\u5b9a\u9577\u5ea6\uff0c\u53ef\u4ee5\u6709\u6548\u5730\u63a7\u5236\u5167\u5b58\u4f7f\u7528\uff0c\u4e26\u78ba\u4fdd\u7cfb\u7d71\u7684\u7a69\u5b9a\u6027\u3002<\/p>\n<h2 id=\"redis%e7%9a%84%e5%88%97%e8%a1%a8%e7%b5%90%e6%a7%8b-svUGDmyWhY\">Redis\u7684\u5217\u8868\u7d50\u69cb<\/h2>\n<p>\u5728Redis\u4e2d\uff0c\u5217\u8868\u662f\u4e00\u7a2e\u6709\u5e8f\u7684\u5b57\u7b26\u4e32\u96c6\u5408\uff0c\u53ef\u4ee5\u7528\u4f86\u5be6\u73fe\u968a\u5217\u3002Redis\u63d0\u4f9b\u4e86\u591a\u7a2e\u64cd\u4f5c\u4f86\u7ba1\u7406\u5217\u8868\uff0c\u4f8b\u5982\uff1a<\/p>\n<ul>\n<li><code>LPUSH<\/code>\uff1a\u5c07\u4e00\u500b\u6216\u591a\u500b\u503c\u63d2\u5165\u5230\u5217\u8868\u7684\u5de6\u5074\u3002<\/li>\n<li><code>RPUSH<\/code>\uff1a\u5c07\u4e00\u500b\u6216\u591a\u500b\u503c\u63d2\u5165\u5230\u5217\u8868\u7684\u53f3\u5074\u3002<\/li>\n<li><code>LPOP<\/code>\uff1a\u79fb\u9664\u4e26\u8fd4\u56de\u5217\u8868\u7684\u7b2c\u4e00\u500b\u5143\u7d20\u3002<\/li>\n<li><code>RPOP<\/code>\uff1a\u79fb\u9664\u4e26\u8fd4\u56de\u5217\u8868\u7684\u6700\u5f8c\u4e00\u500b\u5143\u7d20\u3002<\/li>\n<li><code>LLEN<\/code>\uff1a\u8fd4\u56de\u5217\u8868\u7684\u9577\u5ea6\u3002<\/li>\n<\/ul>\n<h2 id=\"%e5%af%a6%e7%8f%be%e5%9b%ba%e5%ae%9a%e9%95%b7%e5%ba%a6%e9%9a%8a%e5%88%97%e7%9a%84%e6%ad%a5%e9%a9%9f-svUGDmyWhY\">\u5be6\u73fe\u56fa\u5b9a\u9577\u5ea6\u968a\u5217\u7684\u6b65\u9a5f<\/h2>\n<p>\u8981\u5728Redis\u4e2d\u5be6\u73fe\u56fa\u5b9a\u9577\u5ea6\u7684\u968a\u5217\uff0c\u53ef\u4ee5\u9075\u5faa\u4ee5\u4e0b\u6b65\u9a5f\uff1a<\/p>\n<ol>\n<li>\u8a2d\u7f6e\u968a\u5217\u7684\u6700\u5927\u9577\u5ea6\u3002<\/li>\n<li>\u5728\u63d2\u5165\u65b0\u5143\u7d20\u4e4b\u524d\uff0c\u6aa2\u67e5\u7576\u524d\u968a\u5217\u7684\u9577\u5ea6\u3002<\/li>\n<li>\u5982\u679c\u968a\u5217\u5df2\u9054\u5230\u6700\u5927\u9577\u5ea6\uff0c\u5247\u79fb\u9664\u6700\u820a\u7684\u5143\u7d20\u3002<\/li>\n<li>\u5c07\u65b0\u5143\u7d20\u63d2\u5165\u968a\u5217\u3002<\/li>\n<\/ol>\n<h3 id=\"%e7%a4%ba%e4%be%8b%e4%bb%a3%e7%a2%bc-svUGDmyWhY\">\u793a\u4f8b\u4ee3\u78bc<\/h3>\n<p>\u4ee5\u4e0b\u662f\u4e00\u500b\u4f7f\u7528Python\u548cRedis\u7684\u793a\u4f8b\u4ee3\u78bc\uff0c\u5c55\u793a\u5982\u4f55\u5be6\u73fe\u56fa\u5b9a\u9577\u5ea6\u7684\u968a\u5217\uff1a<\/p>\n<pre><code>import redis\n\n# \u9023\u63a5\u5230Redis\nr = redis.Redis(host='localhost', port=6379, db=0)\n\n# \u8a2d\u7f6e\u968a\u5217\u7684\u6700\u5927\u9577\u5ea6\nMAX_LENGTH = 5\nQUEUE_NAME = 'my_queue'\n\ndef push_to_queue(value):\n    # \u6aa2\u67e5\u7576\u524d\u968a\u5217\u9577\u5ea6\n    current_length = r.llen(QUEUE_NAME)\n    \n    # \u5982\u679c\u9577\u5ea6\u5df2\u9054\u5230\u6700\u5927\u503c\uff0c\u79fb\u9664\u6700\u820a\u7684\u5143\u7d20\n    if current_length &gt;= MAX_LENGTH:\n        r.lpop(QUEUE_NAME)\n    \n    # \u5c07\u65b0\u5143\u7d20\u63d2\u5165\u968a\u5217\n    r.rpush(QUEUE_NAME, value)\n\n# \u6e2c\u8a66\nfor i in range(10):\n    push_to_queue(i)\n    print(r.lrange(QUEUE_NAME, 0, -1))  # \u6253\u5370\u7576\u524d\u968a\u5217\u5167\u5bb9\n<\/code><\/pre>\n<p>\u5728\u9019\u500b\u793a\u4f8b\u4e2d\uff0c\u6211\u5011\u5b9a\u7fa9\u4e86\u4e00\u500b\u6700\u5927\u9577\u5ea6\u70ba5\u7684\u968a\u5217\u3002\u6bcf\u7576\u6211\u5011\u63d2\u5165\u4e00\u500b\u65b0\u5143\u7d20\u6642\uff0c\u9996\u5148\u6aa2\u67e5\u7576\u524d\u968a\u5217\u7684\u9577\u5ea6\u3002\u5982\u679c\u9577\u5ea6\u5df2\u9054\u5230\u6700\u5927\u503c\uff0c\u5247\u79fb\u9664\u6700\u820a\u7684\u5143\u7d20\uff0c\u7136\u5f8c\u5c07\u65b0\u5143\u7d20\u6dfb\u52a0\u5230\u968a\u5217\u4e2d\u3002<\/p>\n<h2 id=\"%e7%b8%bd%e7%b5%90-svUGDmyWhY\">\u7e3d\u7d50<\/h2>\n<p>\u901a\u904e\u4e0a\u8ff0\u65b9\u6cd5\uff0c\u6211\u5011\u53ef\u4ee5\u8f15\u9b06\u5730\u5728Redis\u4e2d\u5be6\u73fe\u56fa\u5b9a\u9577\u5ea6\u7684\u968a\u5217\u3002\u9019\u4e0d\u50c5\u6709\u52a9\u65bc\u63a7\u5236\u5167\u5b58\u4f7f\u7528\uff0c\u9084\u80fd\u63d0\u9ad8\u7cfb\u7d71\u7684\u7a69\u5b9a\u6027\u548c\u6027\u80fd\u3002\u7121\u8ad6\u662f\u5728\u6d88\u606f\u968a\u5217\u9084\u662f\u4efb\u52d9\u8abf\u5ea6\u4e2d\uff0c\u56fa\u5b9a\u9577\u5ea6\u7684\u968a\u5217\u90fd\u662f\u4e00\u500b\u975e\u5e38\u5be6\u7528\u7684\u89e3\u6c7a\u65b9\u6848\u3002<\/p>\n<p>\u5982\u679c\u60a8\u6b63\u5728\u5c0b\u627e\u9ad8\u6548\u7684 <a href=\"https:\/\/server.hk\">VPS<\/a> \u89e3\u6c7a\u65b9\u6848\u4f86\u904b\u884c\u60a8\u7684Redis\u670d\u52d9\uff0cServer.HK\u63d0\u4f9b\u4e86\u591a\u7a2e\u9078\u64c7\uff0c\u9069\u5408\u5404\u7a2e\u9700\u6c42\u3002\u7121\u8ad6\u662f <a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a> \u9084\u662f\u5176\u4ed6\u985e\u578b\u7684 <a href=\"https:\/\/server.hk\">\u4f3a\u670d\u5668<\/a>\uff0c\u6211\u5011\u90fd\u80fd\u70ba\u60a8\u63d0\u4f9b\u7a69\u5b9a\u7684\u652f\u6301\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u63a2\u7d22\u5982\u4f55\u5728Redis\u4e2d\u5be6\u73fe\u56fa\u5b9a\u9577\u5ea6\u968a\u5217\u7684\u65b9\u6cd5\uff0c\u78ba\u4fdd\u6578\u64da\u7ba1\u7406\u9ad8\u6548\u4e14\u4e0d\u8d85\u51fa\u9810\u8a2d\u5bb9\u91cf\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-183036","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/183036","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=183036"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/183036\/revisions"}],"predecessor-version":[{"id":183037,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/183036\/revisions\/183037"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=183036"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=183036"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=183036"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}