{"id":128563,"date":"2024-10-26T15:05:22","date_gmt":"2024-10-26T07:05:22","guid":{"rendered":"https:\/\/server.hk\/cnblog\/128563\/"},"modified":"2024-10-26T15:05:23","modified_gmt":"2024-10-26T07:05:23","slug":"redis%e5%af%a6%e7%8f%be%e9%ab%98%e6%95%88%e8%ae%80%e5%8f%96%e6%b5%81%e6%b0%b4%e8%99%9f%ef%bc%88redis-%e8%ae%80%e5%8f%96%e6%b5%81%e6%b0%b4%e8%99%9f%ef%bc%89","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/128563\/","title":{"rendered":"Redis\u5be6\u73fe\u9ad8\u6548\u8b80\u53d6\u6d41\u6c34\u865f\uff08redis \u8b80\u53d6\u6d41\u6c34\u865f\uff09"},"content":{"rendered":"<h1 id=\"redis%e5%af%a6%e7%8f%be%e9%ab%98%e6%95%88%e8%ae%80%e5%8f%96%e6%b5%81%e6%b0%b4%e8%99%9f%ef%bc%88redis-%e8%ae%80%e5%8f%96%e6%b5%81%e6%b0%b4%e8%99%9f%ef%bc%89-bpvdpypSPE\">Redis\u5be6\u73fe\u9ad8\u6548\u8b80\u53d6\u6d41\u6c34\u865f\uff08redis \u8b80\u53d6\u6d41\u6c34\u865f\uff09<\/h1>\n<p>\u5728\u7576\u4eca\u7684\u6578\u64da\u9a45\u52d5\u4e16\u754c\u4e2d\uff0c\u6d41\u6c34\u865f\u7684\u751f\u6210\u548c\u7ba1\u7406\u5c0d\u65bc\u8a31\u591a\u61c9\u7528\u7a0b\u5e8f\u4f86\u8aaa\u81f3\u95dc\u91cd\u8981\u3002\u7121\u8ad6\u662f\u96fb\u5b50\u5546\u52d9\u5e73\u53f0\u7684\u8a02\u55ae\u7de8\u865f\uff0c\u9084\u662f\u7528\u6236\u8a3b\u518a\u7684\u552f\u4e00\u8b58\u5225\u78bc\uff0c\u6d41\u6c34\u865f\u7684\u9ad8\u6548\u8b80\u53d6\u548c\u751f\u6210\u90fd\u80fd\u986f\u8457\u63d0\u5347\u7cfb\u7d71\u7684\u6027\u80fd\u548c\u7528\u6236\u9ad4\u9a57\u3002Redis\u4f5c\u70ba\u4e00\u7a2e\u9ad8\u6548\u7684\u5167\u5b58\u6578\u64da\u5eab\uff0c\u63d0\u4f9b\u4e86\u591a\u7a2e\u65b9\u6cd5\u4f86\u5be6\u73fe\u6d41\u6c34\u865f\u7684\u9ad8\u6548\u8b80\u53d6\u3002\u672c\u6587\u5c07\u63a2\u8a0e\u5982\u4f55\u5229\u7528Redis\u4f86\u5be6\u73fe\u9ad8\u6548\u7684\u6d41\u6c34\u865f\u7ba1\u7406\u3002<\/p>\n<h2 id=\"%e4%bb%80%e9%ba%bc%e6%98%af%e6%b5%81%e6%b0%b4%e8%99%9f%ef%bc%9f-bpvdpypSPE\">\u4ec0\u9ebc\u662f\u6d41\u6c34\u865f\uff1f<\/h2>\n<p>\u6d41\u6c34\u865f\u662f\u4e00\u7a2e\u7528\u65bc\u552f\u4e00\u6a19\u8b58\u67d0\u4e00\u7279\u5b9a\u6578\u64da\u7684\u7de8\u865f\u7cfb\u7d71\u3002\u5b83\u901a\u5e38\u662f\u81ea\u589e\u7684\uff0c\u610f\u5473\u8457\u6bcf\u6b21\u751f\u6210\u65b0\u7684\u6d41\u6c34\u865f\u6642\uff0c\u6578\u5b57\u6703\u81ea\u52d5\u589e\u52a0\u3002\u9019\u7a2e\u7279\u6027\u4f7f\u5f97\u6d41\u6c34\u865f\u5728\u6578\u64da\u5eab\u4e2d\u80fd\u5920\u4fdd\u6301\u552f\u4e00\u6027\uff0c\u4e26\u4e14\u4fbf\u65bc\u67e5\u8a62\u548c\u7ba1\u7406\u3002<\/p>\n<h2 id=\"%e7%82%ba%e4%bb%80%e9%ba%bc%e9%81%b8%e6%93%87redis%ef%bc%9f-bpvdpypSPE\">\u70ba\u4ec0\u9ebc\u9078\u64c7Redis\uff1f<\/h2>\n<p>Redis\u662f\u4e00\u7a2e\u9ad8\u6027\u80fd\u7684\u9375\u503c\u5b58\u5132\u7cfb\u7d71\uff0c\u5177\u6709\u4ee5\u4e0b\u5e7e\u500b\u512a\u52e2\uff1a<\/p>\n<ul>\n<li><strong>\u9ad8\u6548\u6027\uff1a<\/strong>Redis\u7684\u6578\u64da\u5b58\u5132\u5728\u5167\u5b58\u4e2d\uff0c\u8b80\u53d6\u901f\u5ea6\u6975\u5feb\uff0c\u9069\u5408\u9700\u8981\u9ad8\u983b\u6b21\u8b80\u53d6\u7684\u5834\u666f\u3002<\/li>\n<li><strong>\u539f\u5b50\u6027\uff1a<\/strong>Redis\u63d0\u4f9b\u4e86\u539f\u5b50\u64cd\u4f5c\uff0c\u78ba\u4fdd\u5728\u591a\u7dda\u7a0b\u74b0\u5883\u4e0b\u7684\u6578\u64da\u4e00\u81f4\u6027\u3002<\/li>\n<li><strong>\u7c21\u55ae\u6613\u7528\uff1a<\/strong>Redis\u7684API\u8a2d\u8a08\u7c21\u55ae\uff0c\u6613\u65bc\u96c6\u6210\u5230\u5404\u7a2e\u61c9\u7528\u4e2d\u3002<\/li>\n<\/ul>\n<h2 id=\"%e4%bd%bf%e7%94%a8redis%e7%94%9f%e6%88%90%e6%b5%81%e6%b0%b4%e8%99%9f-bpvdpypSPE\">\u4f7f\u7528Redis\u751f\u6210\u6d41\u6c34\u865f<\/h2>\n<p>\u5728Redis\u4e2d\uff0c\u53ef\u4ee5\u4f7f\u7528\u81ea\u589e\u9375\uff08INCR\uff09\u4f86\u751f\u6210\u6d41\u6c34\u865f\u3002\u4ee5\u4e0b\u662f\u4f7f\u7528Redis\u751f\u6210\u6d41\u6c34\u865f\u7684\u57fa\u672c\u6b65\u9a5f\uff1a<\/p>\n<pre><code>SETNX order:counter 0  # \u521d\u59cb\u5316\u8a08\u6578\u5668\nINCR order:counter        # \u6bcf\u6b21\u8abf\u7528\u6642\u81ea\u589e\n<\/code><\/pre>\n<p>\u4e0a\u8ff0\u4ee3\u78bc\u4e2d\uff0c\u9996\u5148\u4f7f\u7528SETNX\u547d\u4ee4\u521d\u59cb\u5316\u8a08\u6578\u5668\uff0c\u7136\u5f8c\u4f7f\u7528INCR\u547d\u4ee4\u4f86\u81ea\u589e\u8a08\u6578\u5668\u3002\u9019\u6a23\uff0c\u6bcf\u6b21\u8abf\u7528INCR\u6642\uff0cRedis\u6703\u81ea\u52d5\u8fd4\u56de\u7576\u524d\u7684\u6d41\u6c34\u865f\u3002<\/p>\n<h2 id=\"%e9%ab%98%e6%95%88%e8%ae%80%e5%8f%96%e6%b5%81%e6%b0%b4%e8%99%9f%e7%9a%84%e5%af%a6%e7%8f%be-bpvdpypSPE\">\u9ad8\u6548\u8b80\u53d6\u6d41\u6c34\u865f\u7684\u5be6\u73fe<\/h2>\n<p>\u70ba\u4e86\u63d0\u9ad8\u6d41\u6c34\u865f\u7684\u8b80\u53d6\u6548\u7387\uff0c\u53ef\u4ee5\u8003\u616e\u4ee5\u4e0b\u5e7e\u7a2e\u65b9\u6cd5\uff1a<\/p>\n<h3 id=\"1-%e4%bd%bf%e7%94%a8%e7%ae%a1%e9%81%93%e6%8a%80%e8%a1%93-bpvdpypSPE\">1. \u4f7f\u7528\u7ba1\u9053\u6280\u8853<\/h3>\n<p>\u5728\u9700\u8981\u6279\u91cf\u751f\u6210\u6d41\u6c34\u865f\u7684\u60c5\u6cc1\u4e0b\uff0c\u53ef\u4ee5\u4f7f\u7528Redis\u7684\u7ba1\u9053\u6280\u8853\u4f86\u6e1b\u5c11\u7db2\u7d61\u5ef6\u9072\u3002\u901a\u904e\u5c07\u591a\u500b\u547d\u4ee4\u6253\u5305\u767c\u9001\uff0c\u53ef\u4ee5\u986f\u8457\u63d0\u9ad8\u6027\u80fd\u3002<\/p>\n<pre><code>pipeline = redis_client.pipeline()\nfor i in range(100):\n    pipeline.incr('order:counter')\nresults = pipeline.execute()\n<\/code><\/pre>\n<h3 id=\"2-%e4%bd%bf%e7%94%a8lua%e8%85%b3%e6%9c%ac-bpvdpypSPE\">2. \u4f7f\u7528Lua\u8173\u672c<\/h3>\n<p>Redis\u652f\u6301Lua\u8173\u672c\uff0c\u53ef\u4ee5\u5c07\u591a\u500b\u64cd\u4f5c\u5c01\u88dd\u5728\u4e00\u500b\u539f\u5b50\u64cd\u4f5c\u4e2d\uff0c\u9032\u4e00\u6b65\u63d0\u9ad8\u6027\u80fd\u548c\u5b89\u5168\u6027\u3002<\/p>\n<pre><code>lua_script = \"\"\"\n    local counter = redis.call('INCR', 'order:counter')\n    return counter\n\"\"\"\nresult = redis_client.eval(lua_script, 0)\n<\/code><\/pre>\n<h3 id=\"3-%e5%88%86%e5%b8%83%e5%bc%8f%e7%92%b0%e5%a2%83%e4%b8%ad%e7%9a%84%e6%b5%81%e6%b0%b4%e8%99%9f%e7%ae%a1%e7%90%86-bpvdpypSPE\">3. \u5206\u5e03\u5f0f\u74b0\u5883\u4e2d\u7684\u6d41\u6c34\u865f\u7ba1\u7406<\/h3>\n<p>\u5728\u5206\u5e03\u5f0f\u7cfb\u7d71\u4e2d\uff0c\u53ef\u80fd\u9700\u8981\u8de8\u591a\u500b\u670d\u52d9\u5668\u751f\u6210\u6d41\u6c34\u865f\u3002\u9019\u6642\u53ef\u4ee5\u8003\u616e\u4f7f\u7528Redis\u7684\u5206\u5e03\u5f0f\u9396\u4f86\u78ba\u4fdd\u6d41\u6c34\u865f\u7684\u552f\u4e00\u6027\u3002<\/p>\n<pre><code>if redis.call('SETNX', 'lock:order', 1) then\n    local counter = redis.call('INCR', 'order:counter')\n    redis.call('DEL', 'lock:order')\n    return counter\nend\n<\/code><\/pre>\n<h2 id=\"%e7%b5%90%e8%ab%96-bpvdpypSPE\">\u7d50\u8ad6<\/h2>\n<p>Redis\u4f5c\u70ba\u4e00\u7a2e\u9ad8\u6548\u7684\u6578\u64da\u5b58\u5132\u89e3\u6c7a\u65b9\u6848\uff0c\u80fd\u5920\u6709\u6548\u5730\u5be6\u73fe\u6d41\u6c34\u865f\u7684\u751f\u6210\u548c\u7ba1\u7406\u3002\u901a\u904e\u4f7f\u7528\u81ea\u589e\u9375\u3001\u7ba1\u9053\u6280\u8853\u3001Lua\u8173\u672c\u4ee5\u53ca\u5206\u5e03\u5f0f\u9396\u7b49\u65b9\u6cd5\uff0c\u53ef\u4ee5\u5728\u4e0d\u540c\u7684\u5834\u666f\u4e2d\u5be6\u73fe\u9ad8\u6548\u7684\u6d41\u6c34\u865f\u8b80\u53d6\u548c\u751f\u6210\u3002\u9019\u4e9b\u6280\u8853\u4e0d\u50c5\u63d0\u9ad8\u4e86\u7cfb\u7d71\u7684\u6027\u80fd\uff0c\u9084\u78ba\u4fdd\u4e86\u6578\u64da\u7684\u4e00\u81f4\u6027\u548c\u552f\u4e00\u6027\u3002<\/p>\n<p>\u5982\u679c\u60a8\u6b63\u5728\u5c0b\u627e\u9ad8\u6548\u7684\u6578\u64da\u5b58\u5132\u89e3\u6c7a\u65b9\u6848\uff0c\u8003\u616e\u4f7f\u7528<a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a>\u4f86\u90e8\u7f72\u60a8\u7684Redis\u670d\u52d9\uff0c\u4eab\u53d7\u66f4\u5feb\u7684\u6578\u64da\u8b80\u53d6\u548c\u8655\u7406\u901f\u5ea6\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u63a2\u7d22\u5982\u4f55\u5229\u7528Redis\u5be6\u73fe\u9ad8\u6548\u7684\u6d41\u6c34\u865f\u8b80\u53d6\uff0c\u63d0\u5347\u7cfb\u7d71\u6027\u80fd\u8207\u6578\u64da\u8655\u7406\u901f\u5ea6\uff0c\u7c21\u5316\u958b\u767c\u6d41\u7a0b\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-128563","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/128563","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=128563"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/128563\/revisions"}],"predecessor-version":[{"id":128564,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/128563\/revisions\/128564"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=128563"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=128563"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=128563"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}