{"id":182568,"date":"2024-11-09T23:32:23","date_gmt":"2024-11-09T15:32:23","guid":{"rendered":"https:\/\/server.hk\/cnblog\/182568\/"},"modified":"2024-11-09T23:32:24","modified_gmt":"2024-11-09T15:32:24","slug":"%e6%99%82%e5%ba%8f%e6%95%b8%e6%93%9a%e5%ba%ab%e6%8a%80%e8%a1%93%e9%ab%94%e7%b3%bb%ef%bc%8d%e6%99%82%e5%ba%8f%e6%95%b8%e6%93%9a%e5%ad%98%e5%84%b2%e6%a8%a1%e5%9e%8b%e8%a8%ad%e8%a8%88","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/182568\/","title":{"rendered":"\u6642\u5e8f\u6578\u64da\u5eab\u6280\u8853\u9ad4\u7cfb\uff0d\u6642\u5e8f\u6578\u64da\u5b58\u5132\u6a21\u578b\u8a2d\u8a08"},"content":{"rendered":"<h1 id=\"%e6%99%82%e5%ba%8f%e6%95%b8%e6%93%9a%e5%ba%ab%e6%8a%80%e8%a1%93%e9%ab%94%e7%b3%bb%ef%bc%8d%e6%99%82%e5%ba%8f%e6%95%b8%e6%93%9a%e5%ad%98%e5%84%b2%e6%a8%a1%e5%9e%8b%e8%a8%ad%e8%a8%88-aZvRpYHtsn\">\u6642\u5e8f\u6578\u64da\u5eab\u6280\u8853\u9ad4\u7cfb\uff0d\u6642\u5e8f\u6578\u64da\u5b58\u5132\u6a21\u578b\u8a2d\u8a08<\/h1>\n<p>\u96a8\u8457\u7269\u806f\u7db2\uff08IoT\uff09\u3001\u5927\u6578\u64da\u548c\u667a\u80fd\u8a2d\u5099\u7684\u5feb\u901f\u767c\u5c55\uff0c\u6642\u5e8f\u6578\u64da\u7684\u751f\u6210\u901f\u5ea6\u548c\u6578\u91cf\u90fd\u5728\u4e0d\u65b7\u589e\u52a0\u3002\u6642\u5e8f\u6578\u64da\u5eab\uff08Time Series Database, TSDB\uff09\u5c08\u9580\u7528\u65bc\u5b58\u5132\u548c\u67e5\u8a62\u9019\u985e\u6578\u64da\uff0c\u4e26\u4e14\u5728\u6027\u80fd\u548c\u6548\u7387\u4e0a\u5177\u6709\u986f\u8457\u512a\u52e2\u3002\u672c\u6587\u5c07\u63a2\u8a0e\u6642\u5e8f\u6578\u64da\u5eab\u7684\u6280\u8853\u9ad4\u7cfb\u53ca\u5176\u5b58\u5132\u6a21\u578b\u8a2d\u8a08\u3002<\/p>\n<h2 id=\"%e6%99%82%e5%ba%8f%e6%95%b8%e6%93%9a%e7%9a%84%e7%89%b9%e6%80%a7-aZvRpYHtsn\">\u6642\u5e8f\u6578\u64da\u7684\u7279\u6027<\/h2>\n<p>\u6642\u5e8f\u6578\u64da\u662f\u6307\u96a8\u8457\u6642\u9593\u8b8a\u5316\u800c\u6536\u96c6\u7684\u6578\u64da\uff0c\u901a\u5e38\u5305\u62ec\u6642\u9593\u6233\u548c\u76f8\u61c9\u7684\u6578\u503c\u3002\u9019\u985e\u6578\u64da\u7684\u7279\u6027\u5305\u62ec\uff1a<\/p>\n<ul>\n<li><strong>\u6642\u9593\u5e8f\u5217\u6027\uff1a<\/strong>\u6578\u64da\u9ede\u662f\u6309\u6642\u9593\u9806\u5e8f\u6392\u5217\u7684\uff0c\u9019\u4f7f\u5f97\u6642\u9593\u6233\u6210\u70ba\u4e00\u500b\u91cd\u8981\u7684\u67e5\u8a62\u689d\u4ef6\u3002<\/li>\n<li><strong>\u9ad8\u983b\u7387\u66f4\u65b0\uff1a<\/strong>\u6642\u5e8f\u6578\u64da\u901a\u5e38\u4ee5\u9ad8\u983b\u7387\u751f\u6210\uff0c\u4f8b\u5982\u6bcf\u79d2\u9418\u6216\u6bcf\u6beb\u79d2\u3002<\/li>\n<li><strong>\u6578\u64da\u91cf\u9f90\u5927\uff1a<\/strong>\u96a8\u8457\u6642\u9593\u7684\u63a8\u79fb\uff0c\u6578\u64da\u91cf\u6703\u8fc5\u901f\u589e\u9577\uff0c\u9019\u5c0d\u5b58\u5132\u548c\u67e5\u8a62\u63d0\u51fa\u4e86\u6311\u6230\u3002<\/li>\n<\/ul>\n<h2 id=\"%e6%99%82%e5%ba%8f%e6%95%b8%e6%93%9a%e5%ba%ab%e7%9a%84%e5%ad%98%e5%84%b2%e6%a8%a1%e5%9e%8b%e8%a8%ad%e8%a8%88-aZvRpYHtsn\">\u6642\u5e8f\u6578\u64da\u5eab\u7684\u5b58\u5132\u6a21\u578b\u8a2d\u8a08<\/h2>\n<p>\u6642\u5e8f\u6578\u64da\u5eab\u7684\u5b58\u5132\u6a21\u578b\u8a2d\u8a08\u9700\u8981\u8003\u616e\u6578\u64da\u7684\u9ad8\u6548\u5b58\u5132\u3001\u5feb\u901f\u67e5\u8a62\u548c\u6578\u64da\u58d3\u7e2e\u7b49\u56e0\u7d20\u3002\u4ee5\u4e0b\u662f\u5e7e\u7a2e\u5e38\u898b\u7684\u5b58\u5132\u6a21\u578b\u8a2d\u8a08\uff1a<\/p>\n<h3 id=\"1-%e5%88%97%e5%bc%8f%e5%ad%98%e5%84%b2-aZvRpYHtsn\">1. \u5217\u5f0f\u5b58\u5132<\/h3>\n<p>\u5217\u5f0f\u5b58\u5132\u662f\u6642\u5e8f\u6578\u64da\u5eab\u4e2d\u5e38\u7528\u7684\u4e00\u7a2e\u5b58\u5132\u65b9\u5f0f\u3002\u8207\u884c\u5f0f\u5b58\u5132\u4e0d\u540c\uff0c\u5217\u5f0f\u5b58\u5132\u5c07\u540c\u4e00\u5217\u7684\u6578\u64da\u5b58\u653e\u5728\u4e00\u8d77\uff0c\u9019\u6a23\u53ef\u4ee5\u63d0\u9ad8\u67e5\u8a62\u6548\u7387\uff0c\u7279\u5225\u662f\u5728\u9700\u8981\u805a\u5408\u8a08\u7b97\u7684\u60c5\u6cc1\u4e0b\u3002\u4f8b\u5982\uff0c\u5c0d\u65bc\u4e00\u500b\u5305\u542b\u591a\u500b\u50b3\u611f\u5668\u6578\u64da\u7684\u6642\u5e8f\u6578\u64da\u5eab\uff0c\u5217\u5f0f\u5b58\u5132\u53ef\u4ee5\u4f7f\u5f97\u5c0d\u67d0\u4e00\u7279\u5b9a\u50b3\u611f\u5668\u7684\u67e5\u8a62\u66f4\u52a0\u9ad8\u6548\u3002<\/p>\n<pre><code>\nSELECT AVG(value) FROM sensor_data WHERE sensor_id = 'sensor_1' AND time BETWEEN '2023-01-01' AND '2023-01-31';\n<\/code><\/pre>\n<h3 id=\"2-%e6%95%b8%e6%93%9a%e5%88%86%e5%8d%80-aZvRpYHtsn\">2. \u6578\u64da\u5206\u5340<\/h3>\n<p>\u6578\u64da\u5206\u5340\u662f\u5c07\u6578\u64da\u6839\u64da\u6642\u9593\u6216\u5176\u4ed6\u7dad\u5ea6\u5283\u5206\u70ba\u4e0d\u540c\u7684\u5340\u57df\u3002\u9019\u6a23\u53ef\u4ee5\u63d0\u9ad8\u67e5\u8a62\u6027\u80fd\uff0c\u56e0\u70ba\u67e5\u8a62\u53ea\u9700\u91dd\u5c0d\u76f8\u95dc\u7684\u6578\u64da\u5340\u57df\u9032\u884c\u64cd\u4f5c\u3002\u4f8b\u5982\uff0c\u53ef\u4ee5\u5c07\u6578\u64da\u6309\u5929\u3001\u6708\u6216\u5e74\u9032\u884c\u5206\u5340\uff0c\u9019\u6a23\u5728\u67e5\u8a62\u7279\u5b9a\u6642\u9593\u7bc4\u570d\u5167\u7684\u6578\u64da\u6642\uff0c\u53ef\u4ee5\u5feb\u901f\u5b9a\u4f4d\u5230\u76f8\u61c9\u7684\u5206\u5340\u3002<\/p>\n<h3 id=\"3-%e6%95%b8%e6%93%9a%e5%a3%93%e7%b8%ae-aZvRpYHtsn\">3. \u6578\u64da\u58d3\u7e2e<\/h3>\n<p>\u7531\u65bc\u6642\u5e8f\u6578\u64da\u7684\u7279\u6027\uff0c\u6578\u64da\u91cf\u901a\u5e38\u975e\u5e38\u9f90\u5927\uff0c\u56e0\u6b64\u6578\u64da\u58d3\u7e2e\u6280\u8853\u5728\u6642\u5e8f\u6578\u64da\u5eab\u4e2d\u81f3\u95dc\u91cd\u8981\u3002\u5e38\u898b\u7684\u58d3\u7e2e\u7b97\u6cd5\u5305\u62ec\uff1a<\/p>\n<ul>\n<li><strong>\u5dee\u5206\u7de8\u78bc\uff1a<\/strong>\u53ea\u5b58\u5132\u76f8\u9130\u6578\u64da\u9ede\u4e4b\u9593\u7684\u5dee\u503c\uff0c\u5f9e\u800c\u6e1b\u5c11\u5b58\u5132\u7a7a\u9593\u3002<\/li>\n<li><strong>Run-Length Encoding (RLE)\uff1a<\/strong>\u5c0d\u65bc\u91cd\u8907\u7684\u6578\u64da\u503c\uff0c\u4f7f\u7528\u7c21\u55ae\u7684\u8a08\u6578\u4f86\u8868\u793a\u3002<\/li>\n<li><strong>\u6642\u9593\u5e8f\u5217\u5c08\u7528\u58d3\u7e2e\u7b97\u6cd5\uff1a<\/strong>\u5982Facebook\u7684Gorilla\u7b97\u6cd5\uff0c\u5c08\u9580\u91dd\u5c0d\u6642\u5e8f\u6578\u64da\u9032\u884c\u512a\u5316\u3002<\/li>\n<\/ul>\n<h2 id=\"%e6%99%82%e5%ba%8f%e6%95%b8%e6%93%9a%e5%ba%ab%e7%9a%84%e6%87%89%e7%94%a8%e5%a0%b4%e6%99%af-aZvRpYHtsn\">\u6642\u5e8f\u6578\u64da\u5eab\u7684\u61c9\u7528\u5834\u666f<\/h2>\n<p>\u6642\u5e8f\u6578\u64da\u5eab\u5728\u8a31\u591a\u9818\u57df\u90fd\u6709\u5ee3\u6cdb\u7684\u61c9\u7528\uff0c\u5305\u62ec\uff1a<\/p>\n<ul>\n<li><strong>\u7269\u806f\u7db2\uff1a<\/strong>\u6536\u96c6\u548c\u5206\u6790\u4f86\u81ea\u5404\u7a2e\u50b3\u611f\u5668\u7684\u6578\u64da\u3002<\/li>\n<li><strong>\u91d1\u878d\u5e02\u5834\uff1a<\/strong>\u5be6\u6642\u76e3\u63a7\u80a1\u7968\u50f9\u683c\u548c\u4ea4\u6613\u91cf\u3002<\/li>\n<li><strong>\u904b\u71df\u76e3\u63a7\uff1a<\/strong>\u76e3\u63a7\u4f3a\u670d\u5668\u6027\u80fd\u548c\u61c9\u7528\u7a0b\u5e8f\u72c0\u614b\u3002<\/li>\n<\/ul>\n<h2 id=\"%e7%b5%90%e8%ab%96-aZvRpYHtsn\">\u7d50\u8ad6<\/h2>\n<p>\u6642\u5e8f\u6578\u64da\u5eab\u6280\u8853\u9ad4\u7cfb\u7684\u8a2d\u8a08\u9700\u8981\u8003\u616e\u591a\u7a2e\u56e0\u7d20\uff0c\u5305\u62ec\u6578\u64da\u7684\u5b58\u5132\u6a21\u578b\u3001\u67e5\u8a62\u6027\u80fd\u548c\u6578\u64da\u58d3\u7e2e\u7b49\u3002\u96a8\u8457\u6642\u5e8f\u6578\u64da\u7684\u61c9\u7528\u8d8a\u4f86\u8d8a\u5ee3\u6cdb\uff0c\u9078\u64c7\u5408\u9069\u7684\u6642\u5e8f\u6578\u64da\u5eab\u89e3\u6c7a\u65b9\u6848\u5c07\u6210\u70ba\u4f01\u696d\u6578\u64da\u7ba1\u7406\u7684\u91cd\u8981\u4e00\u74b0\u3002\u5c0d\u65bc\u9700\u8981\u9ad8\u6548\u8655\u7406\u6642\u5e8f\u6578\u64da\u7684\u4f01\u696d\uff0c\u9078\u64c7\u5408\u9069\u7684 <a href=\"https:\/\/server.hk\">VPS<\/a> \u6216 <a href=\"https:\/\/server.hk\">\u9999\u6e2f\u4f3a\u670d\u5668<\/a> \u4f86\u90e8\u7f72\u6642\u5e8f\u6578\u64da\u5eab\u5c07\u662f\u660e\u667a\u4e4b\u8209\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u63a2\u7d22\u6642\u5e8f\u6578\u64da\u5eab\u6280\u8853\u9ad4\u7cfb\uff0c\u6df1\u5165\u4e86\u89e3\u6642\u5e8f\u6578\u64da\u5b58\u5132\u6a21\u578b\u8a2d\u8a08\u7684\u539f\u5247\u8207\u61c9\u7528\uff0c\u63d0\u5347\u6578\u64da\u7ba1\u7406\u6548\u7387\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-182568","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/182568","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=182568"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/182568\/revisions"}],"predecessor-version":[{"id":182569,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/182568\/revisions\/182569"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=182568"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=182568"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=182568"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}