{"id":167631,"date":"2024-11-06T03:09:24","date_gmt":"2024-11-05T19:09:24","guid":{"rendered":"https:\/\/server.hk\/cnblog\/167631\/"},"modified":"2024-11-06T03:09:25","modified_gmt":"2024-11-05T19:09:25","slug":"%e5%88%a9%e7%94%a8redis%e5%af%a6%e7%8f%be%e9%9b%bb%e5%ad%90%e5%9c%8d%e6%ac%84%e7%9a%84%e5%88%a4%e6%96%b7%ef%bc%88redis%e9%9b%bb%e5%ad%90%e5%9c%8d%e6%ac%84%e5%88%a4%e6%96%b7%ef%bc%89","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/167631\/","title":{"rendered":"\u5229\u7528Redis\u5be6\u73fe\u96fb\u5b50\u570d\u6b04\u7684\u5224\u65b7\uff08redis\u96fb\u5b50\u570d\u6b04\u5224\u65b7\uff09"},"content":{"rendered":"<h1 id=\"%e5%88%a9%e7%94%a8redis%e5%af%a6%e7%8f%be%e9%9b%bb%e5%ad%90%e5%9c%8d%e6%ac%84%e7%9a%84%e5%88%a4%e6%96%b7%ef%bc%88redis%e9%9b%bb%e5%ad%90%e5%9c%8d%e6%ac%84%e5%88%a4%e6%96%b7%ef%bc%89-opNgZsjLIa\">\u5229\u7528Redis\u5be6\u73fe\u96fb\u5b50\u570d\u6b04\u7684\u5224\u65b7\uff08redis\u96fb\u5b50\u570d\u6b04\u5224\u65b7\uff09<\/h1>\n<p>\u96fb\u5b50\u570d\u6b04\u6280\u8853\u5728\u7269\u806f\u7db2\uff08IoT\uff09\u548c\u5730\u7406\u4f4d\u7f6e\u670d\u52d9\u4e2d\u8d8a\u4f86\u8d8a\u53d7\u5230\u91cd\u8996\u3002\u5b83\u80fd\u5920\u6839\u64da\u7528\u6236\u7684\u5730\u7406\u4f4d\u7f6e\u4f86\u89f8\u767c\u7279\u5b9a\u7684\u884c\u70ba\u6216\u8b66\u5831\u3002Redis\u4f5c\u70ba\u4e00\u7a2e\u9ad8\u6548\u7684\u6578\u64da\u7d50\u69cb\u5b58\u5132\u7cfb\u7d71\uff0c\u56e0\u5176\u5feb\u901f\u7684\u8b80\u5beb\u6027\u80fd\u548c\u8c50\u5bcc\u7684\u6578\u64da\u7d50\u69cb\uff0c\u6210\u70ba\u5be6\u73fe\u96fb\u5b50\u570d\u6b04\u5224\u65b7\u7684\u7406\u60f3\u9078\u64c7\u3002\u672c\u6587\u5c07\u63a2\u8a0e\u5982\u4f55\u5229\u7528Redis\u4f86\u5be6\u73fe\u96fb\u5b50\u570d\u6b04\u7684\u5224\u65b7\u3002<\/p>\n<h2 id=\"%e4%bb%80%e9%ba%bc%e6%98%af%e9%9b%bb%e5%ad%90%e5%9c%8d%e6%ac%84%ef%bc%9f-opNgZsjLIa\">\u4ec0\u9ebc\u662f\u96fb\u5b50\u570d\u6b04\uff1f<\/h2>\n<p>\u96fb\u5b50\u570d\u6b04\u662f\u4e00\u7a2e\u865b\u64ec\u7684\u908a\u754c\uff0c\u7576\u8a2d\u5099\u9032\u5165\u6216\u96e2\u958b\u9019\u500b\u908a\u754c\u6642\uff0c\u7cfb\u7d71\u53ef\u4ee5\u81ea\u52d5\u89f8\u767c\u76f8\u61c9\u7684\u884c\u70ba\u3002\u9019\u7a2e\u6280\u8853\u5ee3\u6cdb\u61c9\u7528\u65bc\u7269\u6d41\u8ffd\u8e64\u3001\u8cc7\u7522\u7ba1\u7406\u3001\u667a\u80fd\u5bb6\u5c45\u7b49\u9818\u57df\u3002\u96fb\u5b50\u570d\u6b04\u7684\u5be6\u73fe\u901a\u5e38\u4f9d\u8cf4\u65bcGPS\u3001Wi-Fi\u6216\u85cd\u7259\u7b49\u5b9a\u4f4d\u6280\u8853\u3002<\/p>\n<h2 id=\"redis%e7%9a%84%e7%89%b9%e9%bb%9e-opNgZsjLIa\">Redis\u7684\u7279\u9ede<\/h2>\n<p>Redis\u662f\u4e00\u7a2e\u958b\u6e90\u7684\u9375\u503c\u6578\u64da\u5eab\uff0c\u5177\u6709\u4ee5\u4e0b\u5e7e\u500b\u7279\u9ede\uff1a<\/p>\n<ul>\n<li><strong>\u9ad8\u6027\u80fd\uff1a<\/strong>Redis\u80fd\u5920\u4ee5\u6beb\u79d2\u7d1a\u7684\u901f\u5ea6\u8655\u7406\u6578\u64da\uff0c\u9069\u5408\u9700\u8981\u5feb\u901f\u97ff\u61c9\u7684\u61c9\u7528\u5834\u666f\u3002<\/li>\n<li><strong>\u652f\u6301\u591a\u7a2e\u6578\u64da\u7d50\u69cb\uff1a<\/strong>Redis\u4e0d\u50c5\u652f\u6301\u5b57\u7b26\u4e32\uff0c\u9084\u652f\u6301\u54c8\u5e0c\u3001\u5217\u8868\u3001\u96c6\u5408\u3001\u6709\u5e8f\u96c6\u5408\u7b49\u591a\u7a2e\u6578\u64da\u7d50\u69cb\uff0c\u9748\u6d3b\u6027\u9ad8\u3002<\/li>\n<li><strong>\u6301\u4e45\u5316\u9078\u9805\uff1a<\/strong>Redis\u63d0\u4f9b\u591a\u7a2e\u6301\u4e45\u5316\u6a5f\u5236\uff0c\u80fd\u5920\u5728\u7cfb\u7d71\u91cd\u555f\u5f8c\u6062\u5fa9\u6578\u64da\u3002<\/li>\n<\/ul>\n<h2 id=\"%e5%a6%82%e4%bd%95%e5%88%a9%e7%94%a8redis%e5%af%a6%e7%8f%be%e9%9b%bb%e5%ad%90%e5%9c%8d%e6%ac%84%e5%88%a4%e6%96%b7-opNgZsjLIa\">\u5982\u4f55\u5229\u7528Redis\u5be6\u73fe\u96fb\u5b50\u570d\u6b04\u5224\u65b7<\/h2>\n<p>\u5be6\u73fe\u96fb\u5b50\u570d\u6b04\u7684\u57fa\u672c\u601d\u8def\u662f\u5c07\u570d\u6b04\u7684\u5730\u7406\u7bc4\u570d\u5b58\u5132\u5728Redis\u4e2d\uff0c\u4e26\u6839\u64da\u7528\u6236\u7684\u5be6\u6642\u4f4d\u7f6e\u9032\u884c\u5224\u65b7\u3002\u4ee5\u4e0b\u662f\u5177\u9ad4\u7684\u5be6\u73fe\u6b65\u9a5f\uff1a<\/p>\n<h3 id=\"1-%e5%ae%9a%e7%be%a9%e9%9b%bb%e5%ad%90%e5%9c%8d%e6%ac%84-opNgZsjLIa\">1. \u5b9a\u7fa9\u96fb\u5b50\u570d\u6b04<\/h3>\n<p>\u9996\u5148\uff0c\u9700\u8981\u5b9a\u7fa9\u96fb\u5b50\u570d\u6b04\u7684\u7bc4\u570d\u3002\u9019\u53ef\u4ee5\u901a\u904e\u7d93\u7def\u5ea6\u4f86\u8868\u793a\u3002\u4f8b\u5982\uff0c\u5047\u8a2d\u6211\u5011\u8981\u5b9a\u7fa9\u4e00\u500b\u570d\u6b04\uff0c\u4e2d\u5fc3\u9ede\u70ba(22.3964, 114.1095)\uff0c\u534a\u5f91\u70ba100\u7c73\u3002<\/p>\n<h3 id=\"2-%e5%ad%98%e5%84%b2%e5%9c%8d%e6%ac%84%e4%bf%a1%e6%81%af-opNgZsjLIa\">2. \u5b58\u5132\u570d\u6b04\u4fe1\u606f<\/h3>\n<p>\u53ef\u4ee5\u4f7f\u7528Redis\u7684\u54c8\u5e0c\u7d50\u69cb\u4f86\u5b58\u5132\u570d\u6b04\u4fe1\u606f\uff1a<\/p>\n<pre><code>\nHMSET geofence:1 center_lat 22.3964 center_lon 114.1095 radius 100\n<\/code><\/pre>\n<h3 id=\"3-%e7%8d%b2%e5%8f%96%e7%94%a8%e6%88%b6%e4%bd%8d%e7%bd%ae-opNgZsjLIa\">3. \u7372\u53d6\u7528\u6236\u4f4d\u7f6e<\/h3>\n<p>\u7576\u7528\u6236\u79fb\u52d5\u6642\uff0c\u7cfb\u7d71\u9700\u8981\u4e0d\u65b7\u7372\u53d6\u7528\u6236\u7684\u5be6\u6642\u4f4d\u7f6e\u3002\u5047\u8a2d\u7528\u6236\u7684\u4f4d\u7f6e\u70ba(22.3960, 114.1090)\u3002<\/p>\n<h3 id=\"4-%e5%88%a4%e6%96%b7%e7%94%a8%e6%88%b6%e6%98%af%e5%90%a6%e9%80%b2%e5%85%a5%e5%9c%8d%e6%ac%84-opNgZsjLIa\">4. \u5224\u65b7\u7528\u6236\u662f\u5426\u9032\u5165\u570d\u6b04<\/h3>\n<p>\u53ef\u4ee5\u901a\u904e\u8a08\u7b97\u7528\u6236\u4f4d\u7f6e\u8207\u570d\u6b04\u4e2d\u5fc3\u7684\u8ddd\u96e2\u4f86\u5224\u65b7\u662f\u5426\u9032\u5165\u570d\u6b04\u3002\u8a08\u7b97\u8ddd\u96e2\u7684\u516c\u5f0f\u5982\u4e0b\uff1a<\/p>\n<pre><code>\ndistance = sqrt((user_lat - center_lat)^2 + (user_lon - center_lon)^2)\n<\/code><\/pre>\n<p>\u5982\u679c\u8ddd\u96e2\u5c0f\u65bc\u570d\u6b04\u7684\u534a\u5f91\uff0c\u5247\u7528\u6236\u9032\u5165\u4e86\u570d\u6b04\u3002<\/p>\n<h3 id=\"5-%e5%af%a6%e7%8f%be%e4%bb%a3%e7%a2%bc%e7%a4%ba%e4%be%8b-opNgZsjLIa\">5. \u5be6\u73fe\u4ee3\u78bc\u793a\u4f8b<\/h3>\n<p>\u4ee5\u4e0b\u662f\u4e00\u500b\u7c21\u55ae\u7684Python\u4ee3\u78bc\u793a\u4f8b\uff0c\u5c55\u793a\u5982\u4f55\u4f7f\u7528Redis\u4f86\u5224\u65b7\u7528\u6236\u662f\u5426\u9032\u5165\u96fb\u5b50\u570d\u6b04\uff1a<\/p>\n<pre><code>\nimport redis\nimport math\n\n# \u9023\u63a5Redis\nr = redis.Redis(host='localhost', port=6379, db=0)\n\n# \u7372\u53d6\u570d\u6b04\u4fe1\u606f\ngeofence = r.hgetall('geofence:1')\ncenter_lat = float(geofence[b'center_lat'])\ncenter_lon = float(geofence[b'center_lon'])\nradius = float(geofence[b'radius'])\n\n# \u7528\u6236\u4f4d\u7f6e\nuser_lat = 22.3960\nuser_lon = 114.1090\n\n# \u8a08\u7b97\u8ddd\u96e2\ndistance = math.sqrt((user_lat - center_lat) ** 2 + (user_lon - center_lon) ** 2)\n\n# \u5224\u65b7\u662f\u5426\u9032\u5165\u570d\u6b04\nif distance &lt; radius:\n    print(&quot;\u7528\u6236\u5df2\u9032\u5165\u96fb\u5b50\u570d\u6b04&quot;)\nelse:\n    print(&quot;\u7528\u6236\u672a\u9032\u5165\u96fb\u5b50\u570d\u6b04&quot;)\n<\/code><\/pre>\n<h2 id=\"%e7%b8%bd%e7%b5%90-opNgZsjLIa\">\u7e3d\u7d50<\/h2>\n<p>\u5229\u7528Redis\u5be6\u73fe\u96fb\u5b50\u570d\u6b04\u7684\u5224\u65b7\u662f\u4e00\u500b\u9ad8\u6548\u4e14\u9748\u6d3b\u7684\u89e3\u6c7a\u65b9\u6848\u3002\u901a\u904e\u7c21\u55ae\u7684\u6578\u64da\u7d50\u69cb\u548c\u8a08\u7b97\uff0c\u6211\u5011\u53ef\u4ee5\u5feb\u901f\u5224\u65b7\u7528\u6236\u7684\u4f4d\u7f6e\u662f\u5426\u5728\u6307\u5b9a\u7684\u570d\u6b04\u5167\u3002\u9019\u7a2e\u6280\u8853\u5728\u8a31\u591a\u61c9\u7528\u5834\u666f\u4e2d\u90fd\u5177\u6709\u5ee3\u6cdb\u7684\u61c9\u7528\u6f5b\u529b\u3002<\/p>\n<p>\u5982\u679c\u60a8\u5c0d\u65bc\u5982\u4f55\u5728\u60a8\u7684\u9805\u76ee\u4e2d\u4f7f\u7528Redis\u6216\u5176\u4ed6\u6280\u8853\u6709\u8208\u8da3\uff0c\u6b61\u8fce\u8a2a\u554f\u6211\u5011\u7684\u7db2\u7ad9\u4e86\u89e3\u66f4\u591a\u8cc7\u8a0a\uff0c\u63a2\u7d22\u6211\u5011\u7684<a href=\"https:\/\/server.hk\">VPS<\/a> \u89e3\u6c7a\u65b9\u6848\uff0c\u52a9\u60a8\u5be6\u73fe\u66f4\u9ad8\u6548\u7684\u61c9\u7528\u958b\u767c\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u63a2\u7d22\u5982\u4f55\u5229\u7528Redis\u5be6\u73fe\u96fb\u5b50\u570d\u6b04\u5224\u65b7\uff0c\u63d0\u5347\u5730\u7406\u4f4d\u7f6e\u76e3\u63a7\u6548\u7387\uff0c\u78ba\u4fdd\u5b89\u5168\u8207\u7ba1\u7406\u7684\u6700\u4f73\u89e3\u6c7a\u65b9\u6848\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-167631","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/167631","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=167631"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/167631\/revisions"}],"predecessor-version":[{"id":167632,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/167631\/revisions\/167632"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=167631"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=167631"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=167631"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}