{"id":111,"date":"2019-07-09T09:09:35","date_gmt":"2019-07-09T09:09:35","guid":{"rendered":"http:\/\/www.taosdata.com.cn:88\/blog\/?p=111"},"modified":"2022-05-13T01:49:38","modified_gmt":"2022-05-13T01:49:38","slug":"%e4%b8%ba%e4%bb%80%e4%b9%88%e7%89%a9%e8%81%94%e7%bd%91%e5%a4%a7%e6%95%b0%e6%8d%ae%e5%b9%b3%e5%8f%b0%ef%bc%8c%e4%bd%bf%e7%94%a8tdengine%ef%bc%8c%e5%8f%af%e4%b8%8d%e8%a6%81redis-kafka-spark%e7%ad%89","status":"publish","type":"post","link":"https:\/\/www.taosdata.com\/tdengine-engineering\/111.html","title":{"rendered":"\u4e3a\u4ec0\u4e48\u7269\u8054\u7f51\u5927\u6570\u636e\u5e73\u53f0\uff0c\u4f7f\u7528TDengine\uff0c\u53ef\u4ee5\u4e0d\u8981Redis\u3001Kafka\u548cSpark\u7b49\u8f6f\u4ef6\uff1f"},"content":{"rendered":"\n

TDengine\u662f\u4e00\u9ad8\u6548\u7684\u65f6\u5e8f\u7a7a\u95f4\u5927\u6570\u636e\u5904\u7406\u5f15\u64ce\uff0c\u56e0\u4e3a\u5145\u5206\u5229\u7528\u7269\u8054\u7f51\u3001\u8f66\u8054\u7f51\u3001\u5de5\u4e1a\u4e92\u8054\u7f51\u7b49\u573a\u666f\u7684\u6570\u636e\u7279\u70b9\u5e76\u505a\u4e86\u5f88\u591a\u4f18\u5316\uff0c\u56e0\u6b64\u6027\u80fd\u4e0a\u8fdc\u80dc\u901a\u7528\u7684\u5927\u6570\u636e\u5e73\u53f0\u3002\u4f46TDengine\u7684\u6838\u5fc3\u529f\u80fd\u662f\u65f6\u5e8f\u6570\u636e\u5e93<\/a>\uff08Time-Series Database\uff09\uff0c\u800c\u5927\u6570\u636e\u5904\u7406\u5e73\u53f0\u5f80\u5f80\u8fd8\u9700\u8981\u6709\u6d88\u606f\u961f\u5217\u3001\u7f13\u5b58\u3001\u6d41\u5f0f\u8ba1\u7b97\u7b49\u529f\u80fd\uff0c\u600e\u4e48\u80fd\u4e0d\u8981Redis\u3001Kafak\u548cSpark\u8fd9\u4e9b\u8f6f\u4ef6\u4e86\u5462\uff1f\u672c\u6587\u5c06\u7ed9\u51fa\u8be6\u7ec6\u89e3\u7b54\u3002<\/p>\n\n\n\n

\u6d88\u606f\u961f\u5217<\/h4>\n\n\n\n

\u4e0e\u4e92\u8054\u7f51\u5e94\u7528\u4e0d\u4e00\u6837\u7684\u662f\uff0c\u7269\u8054\u7f51\u573a\u666f\u4e2d\uff0c\u53ea\u8981\u6307\u5b9a\u8054\u7f51\u8bbe\u5907\u6570\u91cf\uff0c\u6570\u636e\u91c7\u96c6\u9891\u6b21\uff0c\u7cfb\u7edf\u6240\u9700\u8981\u7684\u6d41\u91cf\u662f\u53ef\u8f83\u4e3a\u51c6\u786e\u4f30\u7b97\u51fa\u6765\u7684\uff0c\u6d41\u91cf\u662f\u8f83\u4e3a\u5e73\u7a33\u7684\u3002\u800c\u4e92\u8054\u7f51\u573a\u666f\u4e2d\uff0c\u6d41\u91cf\u4e0d\u5e73\u7a33\uff0c\u6bd4\u5982\u53cc11\u7684\u65f6\u5019\uff0c\u7535\u5546\u7684\u6d41\u91cf\u53ef\u4ee5\u51e0\u5341\u500d\u7684\u53d8\u5316\u3002\u540c\u65f6\uff0c\u7269\u8054\u7f51\u8bbe\u5907\u90fd\u6709\u4e00\u5b9a\u7684\u6570\u636e\u7f13\u5b58\u80fd\u529b\uff0c\u4e0d\u80fd\u4ec5\u4ec5\u4f9d\u9760\u4e91\u7aef\u7684\u7f13\u5b58\u6765\u89e3\u51b3\u3002\u56e0\u4e3a\u5373\u4f7f\u6574\u4e2a\u7cfb\u7edf\u90fd\u5de5\u4f5c\u6b63\u5e38\uff0c\u4f46\u7f51\u7edc\u4efb\u4f55\u90e8\u5206\u90fd\u53ef\u80fd\u51fa\u73b0\u4e2d\u65ad\uff0c\u6570\u636e\u5c31\u65e0\u6cd5\u4f20\u8f93\uff0c\u7269\u8054\u7f51\u8bbe\u5907\u5fc5\u987b\u6709\u80fd\u529b\u628a\u6570\u636e\u5148\u7f13\u5b58\u8d77\u6765\uff0c\u56e0\u6b64\u7269\u8054\u7f51\u5e73\u53f0\u5bf9\u6d88\u606f\u961f\u5217\u7684\u9700\u6c42\u6ca1\u6709\u90a3\u4e48\u5f3a\u70c8\u3002\u800cTDengine\u5185\u90e8\u5b9e\u73b0\u4e86\u4e00\u7b80\u5355\u7684\u6d88\u606f\u961f\u5217\uff0c\u4efb\u4f55\u6536\u5230\u7684\u6d88\u606f\u90fd\u4f1a\u5199\u8fdbWAL\u65e5\u5fd7\uff0c\u53ea\u8981\u56de\u590d\u786e\u8ba4\u4e86\u7684\u6d88\u606f\uff0c\u5c31\u4e00\u5b9a\u4e0d\u4f1a\u4e22\u5931\u3002\u540c\u65f6TDengine\u63d0\u4f9b\u8ba2\u9605\u529f\u80fd\uff0c\u7528\u6237\u53ef\u4ee5\u8ba2\u9605\u539f\u59cb\u6570\u636e\uff0c\u4e00\u4e2a\u6570\u636e\u5b50\u96c6\u3001\u65f6\u95f4\u8f74\u4e0a\u805a\u5408\u8ba1\u7b97\u7684\u7ed3\u679c\uff0c\u6216\u662f\u591a\u6761\u65f6\u95f4\u7ebf\u5b9a\u65f6\u805a\u5408\u7684\u7ed3\u679c\uff0c\u8fd9\u6837\u5c31\u4e0d\u9700\u8981\u4f7f\u7528Kafka\u7b49\u7c7b\u4f3c\u7684\u6d88\u606f\u961f\u5217\u8f6f\u4ef6\u3002\u4f7f\u7528TDengine<\/a>,\u5c06\u6570\u636e\u5199\u5165\u6d88\u606f\u961f\u5217\uff0c\u5c31\u662f\u6807\u51c6\u7684SQL\ninsert\u6307\u4ee4,\u8ba2\u9605\u6570\u636e\uff0cC\/C++\u8bed\u8a00\u7684\u63a5\u53e3\u662f\uff1a<\/p>\n\n\n\n

taos_subscribe(char *host, char *user, char *pass, char *db, char *table, long time, int mseconds)<\/code><\/p>\n\n\n\n

\u8fd9\u4e2aAPI\u91cc\u7684\u53c2\u6570\u662f\u94fe\u63a5\u6570\u636e\u5e93\u6240\u9700\u8981\u7684IP\u5730\u5740\u3001\u7528\u6237\u540d\u3001\u5bc6\u7801\u3001\u6570\u636e\u5e93\u4ee5\u53ca\u8868\u7684\u540d\u5b57\uff0c\u4f46\u53c2\u6570mseconds\u63a7\u5236\u4e86\u591a\u5feb\u8fd4\u56de\u4e00\u6b21\u6570\u636e\u7ed9\u5e94\u7528\uff0c\u53c2\u6570time\u662f\u6307\u79bb\u73b0\u5728\u591a\u957f\u65f6\u95f4\u4e4b\u524d\u7684\u6570\u636e\u9700\u8981\u8fd4\u56de\u7ed9\u5e94\u7528\uff0c\u5982\u679c\u6ca1\u6709\u8fd4\u56de\u8fc7\u7684\u8bdd\u3002\u5176\u4ed6\u8bed\u8a00\u7684API\u53ef\u4ee5\u53c2\u8003TDengine\u7684\u7528\u6237\u624b\u518c\u3002<\/p>\n\n\n\n

\u7f13\u5b58<\/h4>\n\n\n\n

TDengine\u5bf9\u6570\u636e\u5e93\u5206\u914d\u4e86\u56fa\u5b9a\u7684\u5185\u5b58\u6c60\uff0c\u65b0\u63d2\u5165\u7684\u6570\u636e\uff0c\u4f1a\u5148\u5199\u5165\u5185\u5b58\u6c60\u3002\u6bcf\u4e2a\u6570\u636e\u91c7\u96c6\u8bbe\u5907\u6216\u662f\u6bcf\u5f20\u8868\uff0c\u90fd\u4f1a\u4ece\u5185\u5b58\u6c60\u4e2d\u5206\u914d\u5230\u4e00\u4e2a\u6216\u591a\u4e2a\u6570\u636e\u5757\u3002\u5bf9\u4e8e\u4e92\u8054\u7f51\u5e94\u7528\uff0c\u9700\u8981\u7f13\u5b58\u7684\u6570\u636e\u5f80\u5f80\u662f\u7528\u6237\u8bfb\u53d6\u9891\u6b21\u8f83\u9ad8\u7684\u6570\u636e\uff0c\u53d6\u51b3\u4e8e\u7528\u6237\u884c\u4e3a\u3002\u6bd4\u5982\u67d0\u5934\u6761\u6587\u7ae0\u6216\u5fae\u535a\uff0c\u4e00\u5929\u4e4b\u540e\u8fd8\u5f88\u6709\u70ed\u5ea6\uff0c\u9700\u8981\u7f13\u5b58\u624d\u884c\u3002\u800c\u7269\u8054\u7f51\u6570\u636e\uff0c\u7edd\u5927\u90e8\u5206\u60c5\u51b5\u4e0b\uff0c\u521a\u521a\u91c7\u96c6\u7684\u6570\u636e\u624d\u662f\u70ed\u6570\u636e\uff0c\u5386\u53f2\u6570\u636e\u4e00\u822c\u60c5\u51b5\u4e0b\u90fd\u662f\u51b7\u6570\u636e\u3002\u56e0\u6b64TDengine\u6309\u7167\u5148\u8fdb\u5148\u51fa\u7684\u539f\u5219\u5bf9\u5185\u5b58\u6c60\u8fdb\u884c\u7ba1\u7406\uff0c\u5185\u5b58\u4e0d\u8db3\u65f6\uff0c\u8001\u7684\u6570\u636e\u4f1a\u88ab\u6301\u4e45\u5316\u5b58\u50a8\uff0c\u800c\u5185\u5b58\u91cc\u7684\u8001\u6570\u636e\u4f1a\u88ab\u6700\u65b0\u7684\u8986\u76d6\u6389\u3002TDengine\u8fd8\u4fdd\u8bc1\u4e86\u4efb\u4f55\u4e00\u53f0\u8bbe\u5907\u6700\u540e\u4e00\u6761\u8bb0\u5f55\u4e00\u5b9a\u5728\u5185\u5b58\u4e2d\uff0c\u5982\u679c\u5e94\u7528\u8981\u83b7\u53d6\u6bcf\u4e2a\u8bbe\u5907\u7684\u6700\u65b0\u6570\u636e\u6216\u72b6\u6001\uff0c\u90fd\u5c06\u4ece\u5185\u5b58\u91cc\u76f4\u63a5\u83b7\u53d6\u3002\u7cfb\u7edf\u63d0\u4f9b\u4e86\u4e00\u4e2a\u7279\u6b8a\u7684\u51fd\u6570SQL\nlast_row\u4e13\u95e8\u7528\u6765\u8fd4\u56de\u6700\u540e\u4e00\u6761\u8bb0\u5f55\u3002\u5982\u679c\u4f7f\u7528TDengine\u8d85\u7ea7\u8868\uff0c\u8fd8\u53ef\u4ee5\u5feb\u901f\u8fd4\u56de\u6240\u6709\u8bbe\u5907\u6216\u4e00\u7ec4\u8bbe\u5907\u7684\u6700\u540e\u4e00\u6761\u8bb0\u5f55\uff0c\u4fbf\u4e8e\u5e94\u7528\u663e\u793a\u7cfb\u7edf\u5b9e\u65f6\u72b6\u6001\u3002\u6bd4\u5982\u67e5\u8be2\u6240\u6709\u5317\u4eac\u7684\u6e29\u5ea6\u4f20\u611f\u5668\u7684\u6700\u65b0\u6e29\u5ea6\u503c\uff0c\u4f7f\u7528\u4e0b\u9762\u7684SQL\u5373\u53ef\uff1a<\/p>\n\n\n\n

  select last_row(*) from thermometers where location=\u2019beijing\u2019<\/code><\/p>\n\n\n\n

\u8fd9\u6837\u7684\u8bbe\u8ba1\u8ba9\u7cfb\u7edf\u53ef\u4ee5\u4e0d\u518d\u9700\u8981Redis\u8fd9\u7c7b\u8f6f\u4ef6\u3002<\/p>\n\n\n\n

\u6d41\u5f0f\u8ba1\u7b97<\/h4>\n\n\n\n

\u7269\u8054\u7f51\u6570\u636e\u662f\u4e00\u4e2a\u6d41\u6570\u636e\uff0c\u9700\u8981\u5b9e\u65f6\u6d41\u5f0f\u8ba1\u7b97\u6765\u8fdb\u884c\u5404\u79cd\u9884\u8b66\u3001\u9884\u6d4b\u6216\u751f\u6210\u5b9e\u65f6\u62a5\u8868\u3002\u57fa\u4e8e\u6ed1\u52a8\u7a97\u53e3\uff0cTDengine\u540e\u53f0\u53ef\u5b9a\u65f6\u7684\u62c9\u8d77\u67e5\u8be2\u8ba1\u7b97\uff0c\u63d0\u4f9b\u4e86\u4e00\u7b80\u5316\u7684\u6d41\u5f0f\u8ba1\u7b97\uff0c\u4fbf\u4e8e\u505a\u5404\u79cd\u5b9e\u65f6\u7684\u7edf\u8ba1\u805a\u5408\u64cd\u4f5c\u3002\u6bd4\u5982\uff0c\u67d0\u4e2a\u6e29\u5ea6\u4f20\u611f\u5668\u6bcf\u969410\u79d2\u949f\u91c7\u96c6\u4e00\u6b21\u6e29\u5ea6\uff0c\u4f46\u7cfb\u7edf\u9700\u8981\u6bcf\u96941\u5206\u949f\u8ba1\u7b97\u4e00\u4e0b\u521a\u8fc7\u53bb\u7684\u4e09\u5206\u949f\u7684\u6e29\u5ea6\u5e73\u5747\u503c\uff0cTDengine\u91cc\u5c31\u53ef\u4ee5\u4f7f\u7528\u5982\u4e0bSQL\u8bed\u53e5\u5b9e\u73b0\uff1a<\/p>\n\n\n\n

select\navg(degree) from thermometer interval(3m) sliding(1m)<\/p>\n\n\n\n

\u5176\u4e2d\u7684\u9009\u9879interval\u662f\u6307\u6ed1\u52a8\u7a97\u53e3\u7684\u65f6\u95f4\u957f\u5ea6\uff0csliding\u662f\u6307\u7a97\u53e3\u591a\u5feb\u6ed1\u52a8\u4e00\u6b21\u3002\u8fd9\u6837\u5bf9\u4e8e\u4e00\u822c\u7684\u7269\u8054\u7f51\u573a\u666f\uff0c\u4e0d\u518d\u9700\u8981\u4f7f\u7528Spark\u7b49\u7c7b\u578b\u7684\u6d41\u5f0f\u8ba1\u7b97\u8f6f\u4ef6\u3002<\/p>\n\n\n\n

\u5168\u6808\u7684\u6570\u636e\u5904\u7406\u5f15\u64ce<\/h4>\n\n\n\n

\u7efc\u4e0a\u6240\u8ff0\uff0cTDengine\u63d0\u4f9b\u4e86\u5927\u6570\u636e\u5904\u7406\u6240\u9700\u8981\u7684\u7f13\u5b58\u3001\u6d88\u606f\u961f\u5217\u3001\u6d41\u5f0f\u8ba1\u7b97\u7b49\u7cfb\u5217\u529f\u80fd\u3002\u4f46\u4e00\u4e2a\u7269\u8054\u7f51\u3001\u8f66\u8054\u7f51\u5927\u6570\u636e\u5e73\u53f0\uff0c\u5f80\u5f80\u8fd8\u6709\u5f88\u591a\u4e1a\u52a1\u6570\u636e\u9700\u8981\u5904\u7406\u3002\u8fd9\u4e9b\u4e1a\u52a1\u6570\u636e\u5305\u62ec\u4eba\u5458\u3001\u8bbe\u5907\u7684\u7ba1\u7406\u6570\u636e\uff0c\u4ea4\u6613\u8bb0\u5f55\u7b49\u7b49\uff0c\u8fd9\u4e9b\u6570\u636e\u4e0d\u662f\u65f6\u5e8f\u7684\uff0c\u800c\u4e14\u5f80\u5f80\u6709\u590d\u6742\u7684\u5173\u7cfb\u67e5\u8be2\uff0c\u65e0\u6cd5\u7531TDengine\u5904\u7406\uff0c\u8fd8\u9700\u8981\u4f7f\u7528\u4f20\u7edf\u7684\u5173\u7cfb\u578b\u6570\u636e\u5e93,\u6bd4\u5982MySQL\u6765\u5904\u7406\u3002\u53ea\u4e0d\u8fc7\uff0c\u8fd9\u4e9b\u4e1a\u52a1\u6570\u636e\u7684\u91cf\u90fd\u4e0d\u5927\uff0c\u6839\u672c\u4e0d\u9700\u8981\u5927\u6570\u636e\u6280\u672f\u6765\u5904\u7406\u3002<\/p>\n\n\n\n

\u5728\u5178\u578b\u7684\u7269\u8054\u7f51\u3001\u8f66\u8054\u7f51\u573a\u666f\u91cc\uff0c\u91c7\u96c6\u7684\u6570\u636e\u91cf\u5360\u6709\u6574\u4e2a\u7cfb\u7edf\u7684\u6570\u636e\u91cf\u768499%\u4ee5\u4e0a\uff0c\u4f7f\u7528TDengine\uff0c\u5c31\u80fd\u5f88\u597d\u7684\u89e3\u51b3\u6574\u4e2a\u5e73\u53f0\u7684\u5927\u6570\u636e\u95ee\u9898\uff0c\u5b8c\u5168\u53ef\u629b\u5f03\u6389Kafka\u3001HDFS\u3001HBase\u3001Spark\u548cRedis\u7b49\u4e00\u5927\u5806\u8f6f\u4ef6\uff0c\u5927\u5e45\u7b80\u5316\u6570\u636e\u5e73\u53f0\u7684\u8bbe\u8ba1\uff0c\u964d\u4f4e\u7814\u53d1\u6210\u672c\u5927\uff0c\u964d\u4f4e\u8fd0\u7ef4\u95e8\u69db\u3002\u800c\u4e14\u7cfb\u7edf\u5c06\u66f4\u52a0\u5065\u58ee\uff0c\u6570\u636e\u7684\u4e00\u81f4\u6027\u66f4\u6709\u4fdd\u8bc1\u3002<\/p>\n\n\n\n

\u6700\u540e\u503c\u5f97\u4e00\u63d0\u7684\u662f\uff0c\u5bf9\u4e8e\u79c1\u6709\u5316\u90e8\u7f72\u7684\u7269\u8054\u7f51\u3001\u8f66\u8054\u7f51\u5e73\u53f0\uff0c\u56e0\u4e3aTDengine\u90e8\u7f72\u7b80\u5355\uff0c\u589e\u52a0\u4e00\u4e2a\u8282\u70b9\u51e0\u79d2\u641e\u5b9a\uff0c\u65e0\u5386\u53f2\u6570\u636e\u5b9e\u65f6\u6570\u636e\u4e4b\u5206\uff0c\u6570\u636e\u5907\u4efd\u6062\u590d\u5168\u90e8\u81ea\u52a8\uff0c\u76f8\u5bf9\u4e8e\u901a\u7528\u7684\u5927\u6570\u636e\u5e73\u53f0\u800c\u8a00\uff0c\u5c06\u5927\u5e45\u8282\u7701\u73b0\u573a\u5b9e\u65bd\u548c\u540e\u7eed\u7684\u7ef4\u62a4\u6210\u672c\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"

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