{"id":46882,"date":"2023-04-08T04:49:20","date_gmt":"2023-03-26T13:24:03","guid":{"rendered":"https:\/\/www.silicloud.com\/zh\/blog\/%e5%b0%86%e6%95%b0%e6%8d%ae%e6%b5%81%e6%b0%b4%e7%ba%bf%e5%bc%95%e5%85%a5%e4%b8%9a%e5%8a%a1%e7%b3%bb%e7%bb%9f%e4%bb%a5%e7%a1%ae%e4%bf%9d%e4%b8%80%e8%87%b4%e6%80%a7\/"},"modified":"2024-04-29T22:29:22","modified_gmt":"2024-04-29T14:29:22","slug":"%e5%b0%86%e6%95%b0%e6%8d%ae%e6%b5%81%e6%b0%b4%e7%ba%bf%e5%bc%95%e5%85%a5%e4%b8%9a%e5%8a%a1%e7%b3%bb%e7%bb%9f%e4%bb%a5%e7%a1%ae%e4%bf%9d%e4%b8%80%e8%87%b4%e6%80%a7","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/zh\/blog\/%e5%b0%86%e6%95%b0%e6%8d%ae%e6%b5%81%e6%b0%b4%e7%ba%bf%e5%bc%95%e5%85%a5%e4%b8%9a%e5%8a%a1%e7%b3%bb%e7%bb%9f%e4%bb%a5%e7%a1%ae%e4%bf%9d%e4%b8%80%e8%87%b4%e6%80%a7\/","title":{"rendered":"\u5c06\u6570\u636e\u6d41\u6c34\u7ebf\u5f15\u5165\u4e1a\u52a1\u7cfb\u7edf\u4ee5\u786e\u4fdd\u4e00\u81f4\u6027"},"content":{"rendered":"

\u603b\u7ed3<\/h2>\n
\"poc.jpg\"<\/div>\n

\u6211\u5c06\u4ecb\u7ecd\u5c06\u6570\u636e\u7ba1\u9053\u6784\u5efa\u6280\u672f\u5806\u6808\u5e94\u7528\u4e8e\u4e1a\u52a1\u7cfb\u7edf\u6784\u5efa\u7684\u6982\u5ff5\u9a8c\u8bc1\u3002
\n\u6211\u4e0d\u662f\u6570\u636e\u57fa\u7840\u6280\u672f\u4e13\u5bb6\uff0c\u6240\u4ee5\u53ef\u80fd\u4f1a\u6709\u9519\u8bef\u7684\u63cf\u8ff0\u3002\u5982\u679c\u60a8\u6ce8\u610f\u5230\u4e86\uff0c\u8bf7\u6307\u51fa\uff0c\u6211\u5c06\u4e0d\u80dc\u611f\u6fc0\u3002<\/p>\n

\u6570\u636e\u7ba1\u9053\u53ef\u80fd\u7ed9\u4eba\u7559\u4e0b\u4e86\u4ec5\u7528\u4e8e\u6570\u636e\u5206\u6790\u7b49\u7528\u9014\u7684\u5370\u8c61\uff0c\u4f46\u6211\u8ba4\u4e3a\u5b83\u5728\u4e1a\u52a1\u7cfb\u7edf\u4e2d\u4e5f\u53ef\u4ee5\u6709\u6548\u89e3\u51b3\u63d0\u9ad8\u591a\u6570\u636e\u5b58\u50a8\uff08\u5982RDB\u548c\u641c\u7d22\u5f15\u64ce\uff09\u7684\u6570\u636e\u4e00\u81f4\u6027\u4ee5\u53ca\u63d0\u9ad8\u6545\u969c\u97e7\u6027\u7684\u95ee\u9898\u3002\u5728\u89e3\u91ca\u8fd9\u4e2a\u95ee\u9898\u4e4b\u524d\uff0c\u9996\u5148\u6211\u5c06\u628a\u672c\u6587\u6240\u6d89\u53ca\u7684\u4ea7\u54c1\u5f52\u7c7b\u4e3a\u4ee3\u8868\u6570\u636e\u57fa\u7840\u8bbe\u65bd\u6280\u672f\u6982\u5ff5ETL – Extract, Transform, Load\u7684\u8981\u7d20\u5e76\u8fdb\u884c\u4ecb\u7ecd\u3002<\/p>\n

\u63d0\u53d6 – Debezium<\/h3>\n

Debezium \u662f\u7531 Red Hat \u5927\u91cf\u8d21\u732e\u7684\u53d8\u66f4\u6570\u636e\u6355\u83b7\uff08Change Data Capture\uff0c\u4ee5\u4e0b\u7b80\u79f0CDC\uff09\u4ea7\u54c1\u3002
\nCDC \u662f\u4e00\u79cd\u6280\u672f\uff0c\u7528\u4e8e\u63d0\u53d6\u5173\u7cfb\u578b\u6570\u636e\u5e93\uff08RDB\uff09\u7684\u53d8\u66f4\u3002\u53ef\u4ee5\u5c06ETL\u4e2d\u7684E\uff08\u62bd\u53d6\uff09\u9650\u5b9a\u4e3a\u4ec5\u63d0\u53d6\u53d8\u66f4\u7684\u5dee\u5f02\u6982\u5ff5\u3002
\n\u7531\u4e8e\u62bd\u53d6\u76ee\u6807\u88ab\u9650\u5b9a\u4e3a\u5dee\u5f02\uff0c\u6240\u4ee5\u76f8\u6bd4\u4e8e\u5b8c\u6574\u6570\u636e\u7684\u8f6c\u50a8\uff0c\u81ea\u7136\u800c\u7136\u5730\u66f4\u8f7b\u91cf\uff0c\u6709\u52a9\u4e8e\u63d0\u9ad8\u6574\u4e2a\u6570\u636e\u7ba1\u9053\u7684\u6548\u7387\u30021, 2
\n\u7279\u522b\u662f\uff0cDebezium \u662f\u901a\u8fc7\u76d1\u63a7\u7528\u4e8eRDB\u590d\u5236\u7684\u4e8c\u8fdb\u5236\u65e5\u5fd7\u5b9e\u73b0\u7684\u4f4e\u8d1f\u8f7d\u3001\u4f4e\u5ef6\u8fdf\u7684CDC\uff0c\u5c06RDB\u7684\u66f4\u65b0\u8f6c\u6362\u4e3aApache Kafka\u7684\u4e8b\u4ef6\u6d41\u3002<\/p>\n

\u8f6c\u6362 – ksqlDB<\/h3>\n

\u81ea\u7136\u800c\u7136\u5730\uff0c\u7531\u4e8eExtract\u662f\u589e\u91cf\u548c\u5b9e\u65f6\u7684\uff0cTransform\u7684\u4e0b\u4e00\u6b65\u5e94\u8be5\u662f\u6d41\u5904\u7406\u800c\u4e0d\u662f\u5168\u6570\u636e\u6279\u5904\u7406\u3002
\nksqlDB\u662f\u4e00\u4e2a\u53ef\u4ee5\u7528\u7c7b\u4f3cSQL\u8bed\u6cd5\u63cf\u8ff0Kafka\u6d41\u5904\u7406\u7684\u4ea7\u54c1\u3002\u5b83\u7684\u7279\u70b9\u662f\u53ef\u4ee5\u50cf\u58f0\u660e\u6027\u5730\u5b9e\u73b0ETL\u4e2d\u7684T\uff0c\u5373Transform\u5b9a\u4e49RDB\u89c6\u56fe\u3002<\/p>\n

\u52a0\u8f7d – Kafka Connect\uff08\u63a5\u6536\u5668\u8fde\u63a5\u5668\uff09<\/h3>\n

\u6700\u540e\u4e00\u5757\u62fc\u56fe\u662fETL\u4e2d\u7684L\uff0cLoad\u3002
\nKafka Connect\u662f\u8fde\u63a5Kafka\u548c\u5176\u4ed6\u6570\u636e\u6e90\u4ee5\u5b9e\u73b0\u5b9e\u65f6\u4f20\u8f93\u7684\u6846\u67b6\u30024
\n\u4eceKafka\u53d1\u9001\u5230\u5176\u4ed6\u5730\u65b9\u7684Connect\u79f0\u4e3aSink Connector\uff0c\u5e76\u4e14\u5bf9\u4e8eElasticsearch\u3001Amazon S3\u3001Google BigQuery\u7b49\u5404\u79cd\u6570\u636e\u6e90\uff0c\u5df2\u7ecf\u53d1\u5e03\u4e86\u53ef\u4ee5\u6b63\u5e38\u4f7f\u7528\u7684\u5b9e\u73b0\u30025<\/p>\n

\u901a\u8fc7\u5c06\u8fd9\u4e9b\u4ea7\u54c1\u7ec4\u5408\u5728\u4e00\u8d77\uff0c\u53ef\u4ee5\u4f7f\u7528\u975e\u5e38\u5c11\u7684\u4ee3\u7801\u91cf\u6784\u5efa\u6d41\u5904\u7406\u6570\u636e\u7ba1\u9053\u3002<\/p>\n

\u4e00\u4e2a\u5173\u4e8e\u6e38\u620f\u8bc4\u8bba\u7f51\u7ad9\u53ca\u5176\u9762\u4e34\u7684\u95ee\u9898\u3002<\/h2>\n

\u6211\u4eec\u4ee5\u6e38\u620f\u8bc4\u8bba\u7f51\u7ad9\u4f5c\u4e3a\u5bfc\u5165\u60c5\u5883\u3002\u7528\u6237\u53ef\u4ee5\u8fdb\u884c\u6e38\u620f\u8bc4\u8bba\u7684\u53d1\u8868\uff0c\u5e76\u80fd\u591f\u901a\u8fc7\u6807\u9898\u3001\u8bc4\u8bba\u5185\u5bb9\u3001\u5e73\u5747\u8bc4\u5206\u7b49\u8fdb\u884c\u641c\u7d22\u3002<\/p>\n

\"usecase.jpg\"<\/div>\n

\u7528\u6237\u53ef\u4ee5\u901a\u8fc7\u4ee5\u4e0bER\u56fe\u4e2d\u663e\u793a\u7684\u8868\u683c\u8bbe\u8ba1\u7684\u5173\u7cfb\u6570\u636e\u5e93\uff08RDB\uff09\u6765\u63d0\u4ea4\u8bc4\u8bba\u3002<\/p>\n

\"erd.png\"<\/div>\n

RDB \u5728\u5168\u6587\u641c\u7d22\u50cf\u8bc4\u8bba\u4e4b\u7c7b\u7684\u6587\u672c\u6216\u5728\u6570\u5b57\u9879\u4e2d\u641c\u7d22\u4efb\u610f\u5217\u7684\u6761\u4ef6\u65b9\u9762\u5e76\u4e0d\u9002\u5408\u3002
\n\u6211\u4eec\u5c06\u4f7f\u7528\u4ee5\u4e0b\u5e26\u6709\u7d22\u5f15\u7684\u641c\u7d22\u5f15\u64ce\u6765\u5b9e\u73b0\u641c\u7d22\u529f\u80fd\u3002<\/p>\n

\"search-index.png\"<\/div>\n

\u90a3\u4e48\uff0c\u5728\u6784\u5efa\u8fd9\u4e2a\u7f51\u7ad9\u65f6\u6709\u54ea\u4e9b\u6311\u6218\u5462\uff1f<\/p>\n

\u6700\u521d\u7684\u6311\u6218 – \u4e00\u81f4\u6027\u548c\u8010\u969c\u6027 – \u4e00\u81f4\u6027\uff0c\u6301\u4e45\u5ea6<\/h3>\n

\u6211\u5011\u8003\u616e\u4ee5\u4e0b\u7684\u4ee3\u78bc\uff1a\u5148\u5c07\u8a55\u8ad6\u4fdd\u5b58\u5728RDB\u4e2d\uff0c\u7136\u5f8c\u518d\u4fdd\u5b58\u5728\u641c\u7d22\u5f15\u64ce\u4e2d\u3002<\/p>\n

def<\/span> create<\/span>\r\n  # 1) \u30ec\u30d3\u30e5\u30fc\u3092 RDB \u306b\u4fdd\u5b58<\/span>\r\n  review<\/span> =<\/span> Review<\/span>.<\/span>create<\/span>(<\/span>params<\/span>)<\/span>\r\n  # 2) \u30ec\u30d3\u30e5\u30fc\u3092\u691c\u7d22\u30a8\u30f3\u30b8\u30f3\u306b\u4fdd\u5b58<\/span>\r\n  review<\/span>.<\/span>update_search_engine<\/span>\r\nend<\/span>\r\n<\/code><\/pre>\n
(1) \u548c (2) \u4e4b\u95f4\u53d1\u751f\u8fdb\u7a0b\u5d29\u6e83\u65f6\uff0cRDB\u548c\u641c\u7d22\u5f15\u64ce\u7684\u6570\u636e\u5c06\u51fa\u73b0\u4e0d\u4e00\u81f4\u3002
\n(1) h\u00e9 (2) zh\u012b f\u0101 ku\u00ec sh\u00ed, RDB h\u00e9 su\u01d2 de sh\u00f9 j\u00f9 ch\u016b b\u00f9 y\u00ed zh\u00ec.<\/p>\n
\"fault.jpg\"<\/div>\n
\u5b9e\u9645\u4e0a\uff0c\u7531\u4e8e\u540c\u65f6\u540c\u6b65\u5904\u7406RDB\u548c\u641c\u7d22\u5f15\u64ce\u5f80\u5f80\u4f1a\u5bfc\u81f4\u5ef6\u8fdf\u589e\u5927\uff0c\u6240\u4ee5\u66f4\u65b0\u641c\u7d22\u5f15\u64ce\u7684\u4f8b\u5b50\u901a\u5e38\u4f1a\u88ab\u5b9e\u73b0\u4e3a\u7c7b\u4f3c\u4e8e\u5ef6\u8fdf\u4f5c\u4e1a\uff08Delayed Job\uff09\u7684\u5f02\u6b65\u5904\u7406\u3002\u4e0d\u8fc7\uff0c\u8981\u5728\u672c\u8d28\u4e0a\u7ef4\u6301RDB\u548c\u6d88\u606f\u53d1\u5e03\u7684\u4e00\u81f4\u6027\u4ecd\u7136\u662f\u4e00\u4e2a\u96be\u9898\uff0c\u76ee\u524d\u8fd8\u6ca1\u6709\u89e3\u51b3\u3002\uff08\u5373\u4f7f\u6709\u4eba\u4eceRDB\u7684CLI\u76f4\u63a5\u66f4\u65b0\u6570\u636e\uff0c\u4e00\u81f4\u6027\u4e5f\u4f1a\u4e27\u5931\uff0c\u5bf9\u5427……\uff09<\/p>\n
\u4eceRDB\u7684\u6570\u636e\u4e2d\u5bfc\u51fa\u641c\u7d22\u5f15\u64ce\u7684\u6570\u636e\u89e3\u51b3\u65b9\u6848<\/h3>\n
\u4e0d\u91c7\u7528\u540c\u65f6\u4fdd\u6301\u5173\u7cfb\u6570\u636e\u5e93\uff08RDB\uff09\u548c\u641c\u7d22\u5f15\u64ce\u7684\u4e00\u81f4\u6027\u7684\u5206\u5e03\u5f0f\u4e8b\u52a1\uff0c\u800c\u662f\u5b9a\u671f\u68c0\u6d4b\u5e76\u53cd\u6620\u5173\u7cfb\u6570\u636e\u5e93\u548c\u641c\u7d22\u5f15\u64ce\u4e4b\u95f4\u7684\u5dee\u5f02\uff0c\u8fd9\u79cd\u65b9\u5f0f\u5982\u4f55\uff1f<\/p>\n
\u7531\u4e8e\u5c06\u5173\u7cfb\u6570\u636e\u5e93\uff08RDB\uff09\u6570\u636e\u4f5c\u4e3a”\u771f\u5b9e”\uff08\u67d0\u4e00\u65f6\u523b\uff09\u6765\u66f4\u65b0\u641c\u7d22\u5f15\u64ce\uff0c\u53ef\u4ee5\u4fdd\u8bc1\u7ed3\u679c\u4e00\u81f4\u6027\u6536\u655b\u5230\u76f8\u540c\u7684\u7ed3\u679c\u3002\uff08\u66f4\u65b0\u987a\u5e8f\u53ef\u80fd\u4f1a\u53d1\u751f\u53d8\u5316\u3002\uff09<\/p>\n
\u5728\u6570\u636e\u5bfc\u5411\u5e94\u7528\u7a0b\u5e8f\u8bbe\u8ba1\u4e2d\uff0c\u6709\u4e00\u79cd\u5c06\u7cfb\u7edf\u548c\u6570\u636e\u5206\u7c7b\u4e3a\u201c\u8bb0\u5f55\u7cfb\u7edf\uff08System of record\uff09\u201d\u548c\u201c\u6d3e\u751f\u6570\u636e\u201d\u7684\u601d\u60f3\u3002\u5f53\u5c06\u5176\u5e94\u7528\u5230\u8fd9\u4e2a\u4e3b\u9898\u65f6\uff0c\u8bc4\u8bba\u53d1\u5e03\u529f\u80fd\u88ab\u5f52\u7c7b\u4e3a\u201c\u8bb0\u5f55\u7cfb\u7edf\u201d\uff0c\u800c\u8bc4\u8bba\u641c\u7d22\u529f\u80fd\u88ab\u5f52\u7c7b\u4e3a\u201c\u6d3e\u751f\u6570\u636e\u7cfb\u7edf\u201d\u3002<\/p>\n
\u65b0\u7684\u6311\u6230 – \u5ef6\u9072 – \u5ef6\u8fdf<\/h3>\n
\u7136\u800c\uff0c\u7531\u4e8e\u5173\u7cfb\u6570\u636e\u5e93\uff08RDB\uff09\u66f4\u65b0\u5230\u641c\u7d22\u5f15\u64ce\u53cd\u6620\u7684\u5ef6\u8fdf\u589e\u5927\uff0c\u51fa\u73b0\u4e86\u65b0\u7684\u95ee\u9898\u3002
\n\u5728\u672c\u6b21\u4e3b\u9898\u4e2d\uff0c\u5f53\u6709\u5927\u91cf\uff08\u4f8b\u59821,000\u4e2a\uff09\u8bc4\u8bba\u88ab\u63d0\u4ea4\u5230\u4e00\u4e2a\u6e38\u620f\u4e2d\u65f6\uff0c\u5dee\u522b\u68c0\u6d4b\u53ef\u80fd\u9700\u8981\u82b1\u8d39\u5f88\u957f\u65f6\u95f4\u3002<\/p>\n
\u80fd\u5426\u5c06\u89e3\u51b3\u65b0\u95ee\u9898\u7684\u65b9\u6848 – \u5c06RDB\u66f4\u65b0\u786e\u5b9a\u4e3a\u4e8b\u4ef6\u5316?<\/h3>\n
\u5982\u679c\u80fd\u591f\u5b9e\u65f6\u68c0\u6d4bRDB\u7684\u66f4\u65b0\uff0c\u90a3\u4e48\u5dee\u5f02\u68c0\u6d4b\u7684\u5ef6\u8fdf\u95ee\u9898\u5f88\u53ef\u80fd\u4f1a\u5f97\u5230\u89e3\u51b3\u3002\u662f\u5426\u53ef\u4ee5\u5728\u76f4\u63a5\u66f4\u65b0RDB\u65f6\uff0c\u6355\u6349\u5230\u7c7b\u4f3c\u4e8eRails\u4e2dActiveRecord\u7684after_save\u56de\u8c03\u4e8b\u4ef6\u5462\uff1f<\/p>\n
\u8fd9\u6b63\u662f\u5f15\u5165CDC\u8d77\u70b9\u6570\u636e\u7ba1\u9053\u6280\u672f\u7684\u52a8\u673a\u3002<\/p>\n
\u6982\u5ff5\u9a8c\u8bc1<\/h2>\n
\"poc.jpg\"<\/div>\n
    \n
  1. \n
      \u8bc4\u8bba\u53d1\u5e03\u529f\u80fd\uff08\u8bb0\u5f55\u7cfb\u7edf\uff09\u4f1a\u66f4\u65b0MySQL\u7684reviews\u8868<\/ol>\n<\/li>\n<\/ol>\n
       <\/p>\n
        \n
      1. \n
          \u4f7f\u7528Debezium\u5c06MySQL\u7684\u66f4\u65b0\u4e8b\u4ef6\u8f6c\u6362\u4e3aKafka\u6d88\u606f<\/ol>\n<\/li>\n<\/ol>\n
           <\/p>\n
            \n
          1. \n
              \u901a\u8fc7ksqlDB\u5904\u7406Kafka\u6d88\u606f\u5e76\u5c06\u5176\u8f6c\u6362\u4e3a\u641c\u7d22\u5f15\u64ce\u7d22\u5f15<\/ol>\n<\/li>\n<\/ol>\n
               <\/p>\n
                \n
              1. \n
                  \u4f7f\u7528Kafka Connect\u5c06\u641c\u7d22\u5f15\u64ce\u7d22\u5f15\u540c\u6b65\u5230Elasticsearch<\/ol>\n<\/li>\n<\/ol>\n
                   <\/p>\n
                    \u8bc4\u8bba\u641c\u7d22\u529f\u80fd\u4f7f\u7528Elasticsearch\u8fdb\u884c\u641c\u7d22\uff08\u6d3e\u751f\u6570\u636e\u7cfb\u7edf\uff09<\/ol>\n
                    \u5b9e\u65bd\u6982\u8ff0<\/h3>\n
                    \u6211\u5011\u4f7f\u7528 Docker Compose \u9032\u884c\u4e86\u5be6\u73fe\u3002
                    \n\u7a0b\u5f0f\u78bc\u53ef\u4ee5\u5728 weakboson\/etl-applyed-app \u4e2d\u627e\u5230\u3002\u53ea\u9700\u9032\u884c git \u514b\u9686\u548c\u4e00\u4e9b\u64cd\u4f5c\u5373\u53ef\u91cd\u73fe PoC\u3002<\/p>\n
                    \u4ece\u7ec8\u7aef1\u542f\u52a8\u5bb9\u5668\u3002<\/p>\n
                    $ <\/span>docker-compose up\r\n<\/code><\/pre>\n
                    \u5f53\u6240\u6709\u5bb9\u5668\u6210\u529f\u542f\u52a8\u540e\uff0c\u5c06\u4f1a\u5982\u4e0b\u6240\u793a\u3002<\/p>\n
                    $ <\/span>docker-compose ps\r\n     Name                    Command               State                       Ports\r\n---------------------------------------------------------------------------------------------------------<\/span>\r\nbroker            \/etc\/confluent\/docker\/run        Up      0.0.0.0:29092->29092\/tcp, 9092\/tcp\r\nelasticsearch     \/usr\/local\/bin\/docker-entr ...   Up      0.0.0.0:9200->9200\/tcp, 0.0.0.0:9300->9300\/tcp\r\nkibana            \/usr\/local\/bin\/dumb-init - ...   Up      0.0.0.0:5601->5601\/tcp\r\nksqldb-cli        \/bin\/sh                          Up\r\nksqldb-server     \/usr\/bin\/docker\/run              Up      0.0.0.0:8088->8088\/tcp\r\nmysql             docker-entrypoint.sh mysqld      Up      0.0.0.0:3306->3306\/tcp, 33060\/tcp\r\nrails             \/bin\/bash                        Up      0.0.0.0:3000->3000\/tcp\r\nschema-registry   \/etc\/confluent\/docker\/run        Up      0.0.0.0:8081->8081\/tcp\r\nzookeeper         \/etc\/confluent\/docker\/run        Up      0.0.0.0:2181->2181\/tcp, 2888\/tcp, 3888\/tcp\r\n<\/code><\/pre>\n
                    \u4ece\u7ec8\u7aef2\u901a\u8fc7Rails\u6267\u884cMySQL\u7684\u521d\u59cb\u6570\u636e\u6784\u5efa\u3002<\/p>\n
                    $ <\/span>docker exec<\/span> -it<\/span> -u<\/span> ${<\/span>UID<\/span>}<\/span>:${<\/span>GID<\/span>}<\/span> rails bash\r\n# \u30b3\u30f3\u30c6\u30ca\u5185\u3067<\/span>\r\nbundle exec <\/span>rake db:create\r\nbundle exec <\/span>rake db:migrate\r\nbundle exec <\/span>rake db:reset\r\n<\/code><\/pre>\n
                    \u5728PoC\u7684\u8bf4\u660e\u56fe\u4e2d\uff0c\u6211\u4eec\u5c06ETL\u7684\u6bcf\u4e2a\u8fc7\u7a0b\u8fdb\u884c\u5206\u7c7b\u548c\u6574\u7406\uff0c\u4f46\u5b9e\u9645\u4e0a\uff0c\u6211\u4eec\u5c06Debezium\u548cKafka Connect\u4ee5\u5d4c\u5165\u5f0f\u6a21\u5f0f\u5b89\u88c5\u5728\u4f4d\u4e8e\u4e2d\u5fc3\u4f4d\u7f6e\u7684ksqlDB\u5bb9\u5668\u4e0a\u7684\u914d\u7f6e\u4e2d\u3002
                    \n\u5728\u5f00\u53d1\u9636\u6bb5\uff0cksqlDB\u53ef\u4ee5\u901a\u8fc7ksqlDB\u7684\u63a5\u53e3\u8f7b\u677e\u7ba1\u7406Kafka Connect\uff0c\u8fd9\u4e5f\u662fksqlDB\u7684\u4e00\u4e2a\u4f18\u70b9\u4e4b\u4e00\u3002<\/p>\n
                    \u63a5\u4e0b\u6765\uff0c\u5c06\u901a\u8fc7 ksqlDB \u7684\u547d\u4ee4\u884c\u754c\u9762\u8fdb\u884c\u914d\u7f6e\u3002<\/p>\n
                    1. \u63d0\u53d6\u4e00\u90e8\u5206<\/h3>\n
                    \u4ece\u73b0\u5728\u5f00\u59cb\uff0c\u51e0\u4e4e\u6240\u6709\u7684\u64cd\u4f5c\u90fd\u5c06\u901a\u8fc7 ksqlDB \u7684\u547d\u4ee4\u884c\u754c\u9762\uff08CLI\uff09\u6765\u5b8c\u6210\u3002
                    \n\u5728\u7ec8\u7aef3\u4e0a\u542f\u52a8 ksqlDB \u7684\u547d\u4ee4\u884c\u754c\u9762\uff08CLI\uff09\u3002<\/p>\n
                    $ <\/span>docker exec<\/span> -it<\/span> ksqldb-cli ksql http:\/\/ksqldb-server:8088\r\n<\/code><\/pre>\n
                    \u4e3a\u4e86\u5e94\u5bf9\u4efb\u4f55\u6f5c\u5728\u7684\u5931\u8d25\uff0c\u6211\u4f1a\u5c06\u8bbe\u5b9a\u8bbe\u4e3a\u201c\u91cd\u65b0\u5f00\u59cb\u5c31\u4ece\u6700\u5f00\u59cb\u505a\u8d77\u201d\u3002<\/p>\n
                    ksql<\/span>><\/span> SET<\/span> 'auto.offset.reset'<\/span> =<\/span> 'earliest'<\/span>;<\/span>\r\n<\/code><\/pre>\n
                    \u4e0b\u9762\u662f\u4e00\u79cd\u53ef\u80fd\u7684\u4e2d\u6587\u7ffb\u8bd1\uff1a
                    \n\u63a5\u4e0b\u6765\uff0c\u6211\u4eec\u5c06\u914d\u7f6eDebezium\uff0c\u5c06MySQL\u7684\u66f4\u65b0\u4e8b\u4ef6\u4f20\u8f93\u5230Kafka\u7684\u6d88\u606f\u4e2d\u3002<\/p>\n
                    ksql<\/span>><\/span> CREATE<\/span> SOURCE<\/span> CONNECTOR<\/span> `my-service-reader`<\/span> WITH<\/span> (<\/span>\r\n    'connector.class'<\/span> =<\/span> 'io.debezium.connector.mysql.MySqlConnector'<\/span>,<\/span>\r\n    'database.hostname'<\/span> =<\/span> 'mysql'<\/span>,<\/span>\r\n    'database.port'<\/span> =<\/span> '3306'<\/span>,<\/span>\r\n    'database.user'<\/span> =<\/span> 'root'<\/span>,<\/span>\r\n    'database.password'<\/span> =<\/span> 'my-root-pw'<\/span>,<\/span>\r\n    'database.allowPublicKeyRetrieval'<\/span> =<\/span> 'true'<\/span>,<\/span>\r\n    'database.server.id'<\/span> =<\/span> '1'<\/span>,<\/span>\r\n    'database.server.name'<\/span> =<\/span> 'my-service-db'<\/span>,<\/span>\r\n    'database.whitelist'<\/span> =<\/span> 'my-service'<\/span>,<\/span>\r\n    'database.history.kafka.bootstrap.servers'<\/span> =<\/span> 'broker:9092'<\/span>,<\/span>\r\n    'database.history.kafka.topic'<\/span> =<\/span> 'my-service'<\/span>,<\/span>\r\n    'include.schema.changes'<\/span> =<\/span> 'false'<\/span>\r\n);<\/span>\r\n<\/code><\/pre>\n
                    \u5f53MySQL\u8868\u6210\u529f\u8bbe\u7f6e\u540e\uff0c\u76f8\u5e94\u7684Kafka\u4e3b\u9898\u5c06\u88ab\u751f\u6210\uff0c\u5e76\u4e14\u53ef\u4ee5\u5c06\u8bb0\u5f55\u4f5c\u4e3a\u521d\u59cb\u72b6\u6001\u7684\u6d88\u606f\u8fdb\u884c\u786e\u8ba4\u3002<\/p>\n
                    ksql<\/span>><\/span> show<\/span> topics<\/span>;<\/span>\r\n Kafka<\/span> Topic<\/span>                                   |<\/span> Partitions<\/span> |<\/span> Partition<\/span> Replicas<\/span>\r\n---------------------------------------------------------------------------------<\/span>\r\n default_ksql_processing_log<\/span>                   |<\/span> 1<\/span>          |<\/span> 1<\/span>\r\n ksql<\/span>-<\/span>connect<\/span>-<\/span>configs<\/span>                          |<\/span> 1<\/span>          |<\/span> 1<\/span>\r\n ksql<\/span>-<\/span>connect<\/span>-<\/span>offsets<\/span>                          |<\/span> 25<\/span>         |<\/span> 1<\/span>\r\n ksql<\/span>-<\/span>connect<\/span>-<\/span>statuses<\/span>                         |<\/span> 5<\/span>          |<\/span> 1<\/span>\r\n my<\/span>-<\/span>service<\/span>                                    |<\/span> 1<\/span>          |<\/span> 1<\/span>\r\n my<\/span>-<\/span>service<\/span>-<\/span>db<\/span>.<\/span>my<\/span>-<\/span>service<\/span>.<\/span>ar_internal_metadata<\/span> |<\/span> 1<\/span>          |<\/span> 1<\/span>\r\n my<\/span>-<\/span>service<\/span>-<\/span>db<\/span>.<\/span>my<\/span>-<\/span>service<\/span>.<\/span>games<\/span>                |<\/span> 1<\/span>          |<\/span> 1<\/span>\r\n my<\/span>-<\/span>service<\/span>-<\/span>db<\/span>.<\/span>my<\/span>-<\/span>service<\/span>.<\/span>reviews<\/span>              |<\/span> 1<\/span>          |<\/span> 1<\/span>\r\n my<\/span>-<\/span>service<\/span>-<\/span>db<\/span>.<\/span>my<\/span>-<\/span>service<\/span>.<\/span>schema_migrations<\/span>    |<\/span> 1<\/span>          |<\/span> 1<\/span>\r\n---------------------------------------------------------------------------------<\/span>\r\n<\/code><\/pre>\n
                    ksqlDB CLI \u53ef\u4ee5\u76f4\u63a5\u67e5\u770bKafka\u4e3b\u9898\u7684\u5185\u5bb9\u3002<\/p>\n
                    ksql<\/span>><\/span> PRINT<\/span> 'my-service-db.my-service.reviews'<\/span> FROM<\/span> BEGINNING<\/span>;<\/span>\r\n<\/code><\/pre>\n
                    1.5. \u5728\u4ecb\u7ecdksqlDB\u4e4b\u524d\u8fdb\u884c\u8f6c\u6362\u6982\u8ff0\u3002<\/h3>\n
                    ksqlDB \u7684\u57fa\u672c\u5bf9\u8c61\u662f\u6d41\uff08STREAM\uff09\u548c\u8868\uff08TABLE\uff09\u3002
                    \n\u6d41\u662f\u7c7b\u4f3c\u8bbf\u95ee\u65e5\u5fd7\u7684\u4e0d\u53ef\u53d8\u6570\u636e\uff0c\u800c\u8868\u5219\u7c7b\u4f3c\u4e8e\u53ef\u53d8\u6570\u636e\u7684\u5173\u7cfb\u6570\u636e\u5e93\u8868\u3002\u8fd9\u4e24\u8005\u90fd\u53ef\u4ee5\u4eceKafka\u4e3b\u9898\u4e2d\u521b\u5efa\u3002\u4ee5\u4e0b\u662f\u5b9a\u4e49\u6d41\u7684\u8bed\u6cd5\u3002<\/p>\n
                    ksql<\/span>><\/span> CREATE<\/span> STREAM<\/span> s<\/span> WITH<\/span> (<\/span>\r\n  kafka_topic<\/span> =<\/span> 'some-topic'<\/span>,<\/span>\r\n  value_format<\/span> =<\/span> 'avro'<\/span>\r\n);<\/span>\r\n<\/code><\/pre>\n
                    \u6b64\u5916\uff0c\u4f5c\u4e3aTransform\u8fc7\u7a0b\u7684\u6838\u5fc3\uff0c\u8fd8\u53ef\u4ee5\u4ece\u6d41\u4e2d\u62bd\u53d6\u6216\u6c47\u603b\u90e8\u5206\u5185\u5bb9\uff0c\u5b9a\u4e49\u65b0\u7684\u6d41\u6216\u8868\u683c\u3002<\/p>\n
                    ksql<\/span>><\/span> CREATE<\/span> STREAM<\/span> s2<\/span> AS<\/span>\r\n  SELECT<\/span> s1<\/span>.<\/span>id<\/span>,<\/span>\r\n         sum<\/span>(<\/span>s1<\/span>.<\/span>price<\/span>)<\/span>\r\n  FROM<\/span> s1<\/span>\r\n  GROUP<\/span> BY<\/span> s1<\/span>.<\/span>id<\/span>;<\/span>\r\n<\/code><\/pre>\n
                    \u5c06\u5176\u901a\u8fc7 SQL \u58f0\u660e\u5f0f\u5730\u5b9a\u4e49\u4e3a ksqlDB \u7684 Transform \u5b9e\u73b0\u3002<\/p>\n
                    \u5728\u9898\u6750\u4e3a\u6e38\u620f\u7684\u7f51\u7ad9\u4e0a\uff0c\u5e0c\u671b\u80fd\u591f\u6839\u636e\u6bcf\u4e2a\u6e38\u620f\u7684\u8bc4\u4ef7\u751f\u6210\u53ef\u53d8\u7684\u641c\u7d22\u7d22\u5f15\uff0c\u6700\u7ec8\u751f\u6210\u7684\u7ed3\u679c\u5c06\u6210\u4e3a\u4e00\u4e2a\u8868\u683c\u3002
                    \n(\u8fd9\u6837\u7684\u8868\u683c\u79f0\u4e3a\u201cMaterialized View\u201d\u3002\u8fd9\u610f\u5473\u7740\u805a\u5408\u67e5\u8be2\u7684\u7ed3\u679c\u88ab\u7f13\u5b58\u8d77\u6765\uff0c\u5373\u5177\u6709\u5b9e\u4f53\u3002)<\/p>\n
                    \u987a\u4fbf\u8bf4\u4e00\u4e0b\uff0c\u6211\u66fe\u7ecf\u9677\u5165\u56f0\u5883\u5e76\u82b1\u8d39\u4e86\u4e00\u4e9b\u65f6\u95f4\u624d\u7406\u89e3\uff0c\u6839\u636e\u672c\u6b21\u7684\u8981\u6c42\uff0c\u56e0\u4e3a\u6b63\u672c\u7684\u6570\u636e\u5b58\u50a8\u662f RDB\uff0c\u6240\u4ee5\u5e94\u8be5\u4ece Kafka \u4e3b\u9898\u521b\u5efa\u7c7b\u4f3c\u4e8e\u8868\u7684\u4e1c\u897f\u3002\u7136\u800c\uff0c\u901a\u8fc7 CDC \u8f6c\u53d1\u5230 Kafka \u7684\u662f\u201cRDB \u66f4\u65b0\u4e8b\u4ef6\u6d41\u201d\uff0c\u6240\u4ee5\u9996\u5148\u5e94\u521b\u5efa\u6d41\u3002
                    \n\u4f60\u53ef\u80fd\u4f1a\u60f3\u201c\u6d41\u4e2d\u65e0\u6cd5\u66f4\u65b0\u8bb0\u5f55\uff0c\u8fd9\u53ef\u80fd\u4f1a\u5e26\u6765\u9ebb\u70e6\u2026\u2026\u201d\uff0c\u4f46\u901a\u8fc7\u4ee5\u201c\u6700\u65b0\u503c\uff08LATEST\uff09\u805a\u5408 RDB \u952e\u7684 CDC \u4e8b\u4ef6\u6d41\u201d\u4e3a\u57fa\u7840\u6765\u5b9a\u4e49\u8868\uff0c\u53ef\u4ee5\u89e3\u51b3\u8fd9\u4e2a\u95ee\u9898\u3002\uff08\u6211\u660e\u767d\u4e86\u3002\uff09<\/p>\n
                    2. \u8f6c\u53d8\u4e00\u4e9b\u4e1c\u897f<\/h3>\n
                    \u6240\u4ee5\uff0c\u6211\u5011\u5c07\u5f9e\u5b9a\u7fa9\u8a55\u8ad6\u548c\u904a\u6232\u7684\u6d41\u548c\u8868\u958b\u59cb\u3002\u7531\u65bc\u6709\u76f8\u4f3c\u540d\u7a31\u7684\u6d41\u548c\u8868\u51fa\u73fe\uff0c\u6211\u5011\u9075\u5faa\u5f9e s_ \u958b\u59cb\u547d\u540d\u6d41\uff0c\u5f9e t_ \u958b\u59cb\u547d\u540d\u8868\u7684\u7d04\u5b9a\u3002\u6700\u7d42\u6211\u5011\u671f\u671b\u7684\u7269\u5316\u8996\u5716\u5c07\u4ee5 v_ \u958b\u982d\u547d\u540d\u3002<\/p>\n
                      \n
                    1. \n
                        \u5b9a\u4e49t_games\u548ct_reviews<\/ol>\n<\/li>\n<\/ol>\n
                        \u5b9a\u4e49\u4e00\u4e2a\u901a\u8fc7game_id\u5bf9t_reviews\u8fdb\u884c\u6c47\u603b\u7684t_review_summaries\u8868\u3002\u8be5\u8868\u8fd8\u6ca1\u6709\u6e38\u620f\u6807\u9898\u3002<\/p>\n
                        \u901a\u8fc7JOIN t_review_summaries\u548ct_games\u8868\uff0c\u5b9a\u4e49\u53ef\u4ee5\u641c\u7d22\u6e38\u620f\u6807\u9898\u7684v_game_review_index\u3002<\/p>\n
                        t_games\u548ct_reviews\u7684\u5b9a\u4e49\u3002<\/h4>\n
                        \u9996\u5148\uff0c\u6211\u4eec\u5c06Kafka\u7684\u6d88\u606f\u76f4\u63a5\u5b9a\u4e49\u4e3a\u6d41\u3002<\/p>\n
                        ksql<\/span>><\/span> CREATE<\/span> STREAM<\/span> s_games<\/span> WITH<\/span> (<\/span>\r\n    kafka_topic<\/span> =<\/span> 'my-service-db.my-service.games'<\/span>,<\/span>\r\n    value_format<\/span> =<\/span> 'avro'<\/span>\r\n);<\/span>\r\n<\/code><\/pre>\n
                        \u63a5\u4e0b\u6765\uff0c\u6211\u4eec\u5c06\u4ee5\u6700\u65b0\u7684 s_games \u8fdb\u884c\u8ba1\u7b97\uff0c\u6765\u5b9a\u4e49 t_games\u3002
                        \nCDC \u4e8b\u4ef6\u7684\u7ed3\u6784\u662f\u5728\u540d\u4e3a before \u7684\u7236\u5c42\u6b21\u4e0b\u6709 RDB \u5217\u7684\u7ed3\u6784\uff0c\u5728\u66f4\u65b0\u4e4b\u524d\u79f0\u4e3a before\uff0c\u5728\u66f4\u65b0\u4e4b\u540e\u79f0\u4e3a after\uff0c\u53ef\u4ee5\u4f7f\u7528\u7bad\u5934\u8fd0\u7b97\u7b26\u6307\u5b9a\u4e3a after->title\u3002<\/p>\n
                        ksql<\/span>><\/span> CREATE<\/span> TABLE<\/span> t_games<\/span> AS<\/span>\r\n  SELECT<\/span> after<\/span>-><\/span>id<\/span> as<\/span> game_id<\/span>,<\/span>\r\n         latest_by_offset<\/span>(<\/span>after<\/span>-><\/span>title<\/span>)<\/span> AS<\/span> title<\/span>\r\n  FROM<\/span> s_games<\/span>\r\n  GROUP<\/span> BY<\/span> after<\/span>-><\/span>id<\/span>\r\n  EMIT<\/span> CHANGES<\/span>;<\/span>\r\n<\/code><\/pre>\n
                        \u8ba9\u6211\u4eec\u5148\u786e\u8ba4\u4e00\u4e0b\u76ee\u524d\u7684\u5b9e\u73b0\u662f\u5426\u6b63\u5e38\u8fd0\u884c\u3002
                        \n\u5bf9\u4e8eksqlDB\u7684\u8868\uff0c\u60a8\u53ef\u4ee5\u6267\u884c\u4e24\u79cd\u67e5\u8be2\uff1a\u4e00\u79cd\u662f\u201c\u6301\u7eed\u4ece\u670d\u52a1\u5668\u8fd4\u56de\u66f4\u65b0\u7684\u884c\u7684\u63a8\u9001\u67e5\u8be2\u201d\uff0c\u53e6\u4e00\u79cd\u662f\u201c\u901a\u8fc7\u952e\u6307\u5b9a\u4e00\u6b21\u6027\u7ed3\u675f\u7684\u62c9\u53d6\u67e5\u8be2\u201d\u3002<\/p>\n
                        \u9996\u5148\u662f\u6307\u5b9a\u5173\u952e\u5b57\u7684\u67e5\u8be2\u3002<\/p>\n
                        ksql<\/span>><\/span> SELECT<\/span> *<\/span> FROM<\/span> t_games<\/span> WHERE<\/span> game_id<\/span> =<\/span> 1<\/span>;<\/span>\r\n+<\/span>-----------------------------+-----------------------------------------+<\/span>\r\n|<\/span>GAME_ID<\/span>                      |<\/span>TITLE<\/span>                                    |<\/span>\r\n+<\/span>-----------------------------+-----------------------------------------+<\/span>\r\n|<\/span>1<\/span>                            |<\/span>DARK<\/span> SOULS<\/span>                               |<\/span>\r\nQuery<\/span> terminated<\/span>\r\n<\/code><\/pre>\n
                        1\u4ef6\u9000\u56de\u5e76\u7ed3\u675f\u3002<\/p>\n
                        \u5f53\u6b21\u4e3a\u63a8\u9001\u67e5\u8be2\uff0c\u5f85 t_games \u7684\u5168\u90e8\u6570\u636e\u8fd4\u56de\u540e\uff0c\u8fdb\u5165\u7b49\u5f85\u72b6\u6001\u3002<\/p>\n
                        ksql<\/span>><\/span> SELECT<\/span> *<\/span> FROM<\/span> t_games<\/span> EMIT<\/span> CHANGES<\/span>;<\/span>\r\n+<\/span>-----------------------------+----------------------------------------------+<\/span>\r\n|<\/span>GAME_ID<\/span>                      |<\/span>TITLE<\/span>                                         |<\/span>\r\n+<\/span>-----------------------------+----------------------------------------------+<\/span>\r\n|<\/span>1<\/span>                            |<\/span>DARK<\/span> SOULS<\/span>                                    |<\/span>\r\n|<\/span>2<\/span>                            |<\/span>Bloodborne<\/span>                                    |<\/span>\r\n|<\/span>3<\/span>                            |<\/span>SEKIRO<\/span>:<\/span> SHADOWS<\/span> DIE<\/span> TWICE<\/span> |<\/span> \u96bb\u72fc<\/span>               |<\/span>\r\n\r\nPress<\/span> CTRL<\/span>-<\/span>C<\/span> to<\/span> interrupt<\/span>\r\n<\/code><\/pre>\n
                        \u8ba9\u6211\u4eec\u6253\u5f00\u4e00\u4e2a\u65b0\u7684\u7ec8\u7aef\uff0c\u5e76\u5728 Rails \u5bb9\u5668\u4e2d\u542f\u52a8 Rails \u63a7\u5236\u53f0\uff0c\u5c1d\u8bd5\u521b\u5efa\u6216\u66f4\u65b0\u4efb\u610f\u559c\u6b22\u7684\u6e38\u620f\u8bc4\u4ef7\u3002<\/p>\n
                        \u5728\u6b64\u65f6\u70b9\u4e0a\uff0c\u5373\u4f7f\u4e0d\u8fdb\u884c\u8f6c\u6362\uff0c\u4e5f\u53ef\u4ee5\u786e\u8ba4\u5230\u4ee5\u4e8b\u4ef6\u9a71\u52a8\u7684\u65b9\u5f0f\u6d41\u52a8\u7684 RDB \u66f4\u65b0\u975e\u5e38\u6709\u8da3\u3002<\/p>\n
                        \u8981\u7ed3\u675f\u63a8\u9001\u67e5\u8be2\uff0c\u8bf7\u6309\u4e0bCtrl + C\u3002<\/p>\n
                        \u4e0e t_games \u76f8\u540c\uff0c\u6211\u4eec\u4e5f\u5b9a\u4e49\u4e86 t_reviews\u3002<\/p>\n
                        ksql<\/span>><\/span> CREATE<\/span> STREAM<\/span> s_reviews<\/span> WITH<\/span> (<\/span>\r\n    kafka_topic<\/span> =<\/span> 'my-service-db.my-service.reviews'<\/span>,<\/span>\r\n    value_format<\/span> =<\/span> 'avro'<\/span>\r\n);<\/span>\r\n\r\nksql<\/span>><\/span> CREATE<\/span> TABLE<\/span> t_reviews<\/span> AS<\/span>\r\n  SELECT<\/span> after<\/span>-><\/span>id<\/span> AS<\/span> review_id<\/span>,<\/span>\r\n         latest_by_offset<\/span>(<\/span>after<\/span>-><\/span>game_id<\/span>)<\/span> AS<\/span> game_id<\/span>,<\/span>\r\n         latest_by_offset<\/span>(<\/span>after<\/span>-><\/span>score<\/span>)<\/span> AS<\/span> score<\/span>,<\/span>\r\n         latest_by_offset<\/span>(<\/span>after<\/span>-><\/span>comment<\/span>)<\/span> AS<\/span> comment<\/span>\r\n  FROM<\/span> s_reviews<\/span>\r\n  GROUP<\/span> BY<\/span> after<\/span>-><\/span>id<\/span>\r\n  EMIT<\/span> CHANGES<\/span>;<\/span>\r\n<\/code><\/pre>\n
                        \u6c47\u603b\u7ed3\u679c\u5b9a\u4e49\u4e3a t_review_summaries\u3002<\/h4>\n
                        \u6211\u4f1a\u4f7f\u7528\u4ee5\u4e0b\u7684t_reviews\u6765\u5b9a\u4e49t_review_summaries\u7684\u6c47\u603b\u7ed3\u679c\u3002
                        \n\u4f60\u4f1a\u53d1\u73b0\u53ef\u4ee5\u76f4\u89c2\u5730\u5199\u6210\u7c7b\u4f3c\u4ee5\u4e0b\u7684SQL\u4ee3\u7801\u3002<\/p>\n
                        ksql<\/span>><\/span> CREATE<\/span> TABLE<\/span> t_review_summaries<\/span> AS<\/span>\r\n  SELECT<\/span> game_id<\/span>,<\/span>\r\n         avg<\/span>(<\/span>score<\/span>)<\/span> AS<\/span> avg_score<\/span>,<\/span>\r\n         count<\/span>(<\/span>review_id<\/span>)<\/span> AS<\/span> cnt<\/span>,<\/span>\r\n         collect_list<\/span>(<\/span>comment<\/span>)<\/span> AS<\/span> comments<\/span>\r\n  FROM<\/span> t_reviews<\/span>\r\n  GROUP<\/span> BY<\/span> game_id<\/span>\r\n  EMIT<\/span> CHANGES<\/span>;<\/span>\r\n<\/code><\/pre>\n
                        \u5b9a\u4e49\u4e00\u4e2a\u5305\u542b\u6e38\u620f\u6807\u9898\u7684 v_game_review_index<\/h4>\n
                        \u53ea\u9700\u8981\u52a0\u5165\u5373\u53ef\u3002<\/p>\n
                        ksql<\/span>><\/span> CREATE<\/span> TABLE<\/span> v_game_review_index<\/span> AS<\/span>\r\n  SELECT<\/span> r<\/span>.<\/span>game_id<\/span> AS<\/span> game_id<\/span>,<\/span>\r\n         g<\/span>.<\/span>title<\/span> AS<\/span> title<\/span>,<\/span>\r\n         r<\/span>.<\/span>cnt<\/span> AS<\/span> cnt<\/span>,<\/span>\r\n         r<\/span>.<\/span>avg_score<\/span> AS<\/span> avg_score<\/span>,<\/span>\r\n         r<\/span>.<\/span>comments<\/span> AS<\/span> comments<\/span>\r\n  FROM<\/span> t_review_summaries<\/span> AS<\/span> r<\/span>\r\n  JOIN<\/span> t_games<\/span> AS<\/span> g<\/span>\r\n  ON<\/span> r<\/span>.<\/span>game_id<\/span> =<\/span> g<\/span>.<\/span>game_id<\/span>\r\n  EMIT<\/span> CHANGES<\/span>;<\/span>\r\n<\/code><\/pre>\n
                        \u5728\u8fd9\u4e2a\u5b9e\u4f8b\u89c6\u56fe\u4e0a\u53d1\u51fa\u63a8\u9001\u67e5\u8be2\u540e\uff0c\u8ba9\u6211\u4eec\u5728Rails\u63a7\u5236\u53f0\u4e0a\u5c1d\u8bd5\u4e00\u4e9b\u64cd\u4f5c\u3002
                        \n\u60a8\u5e94\u8be5\u80fd\u591f\u786e\u8ba4\u66f4\u65b0\u7ed3\u679c\u662f\u5b9e\u65f6\u8fd4\u56de\u7684\u3002<\/p>\n
                        ksql<\/span>><\/span> SELECT<\/span> *<\/span> FROM<\/span> v_game_review_index<\/span> EMIT<\/span> CHANGES<\/span>;<\/span>\r\n+<\/span>----------------+--------------------------------+------+--------------+--------------------------------------------------------+<\/span>\r\n|<\/span>GAME_ID<\/span>         |<\/span>TITLE<\/span>                           |<\/span>CNT<\/span>   |<\/span>AVG_SCORE<\/span>     |<\/span>COMMENTS<\/span>                                                |<\/span>\r\n+<\/span>----------------+--------------------------------+------+--------------+--------------------------------------------------------+<\/span>\r\n|<\/span>1<\/span>               |<\/span>DARK<\/span> SOULS<\/span>                      |<\/span>3<\/span>     |<\/span>6<\/span>.<\/span>0<\/span>           |<\/span>[<\/span>\u6700\u9ad8<\/span>,<\/span> Demons<\/span> Souls<\/span> \u3088\u308a\u3082\u3063\u3055\u308a\u3057\u3066\u3044\u308b<\/span>,<\/span> \u30d8\u30eb\u30d7\u30df\u30fc<\/span>]<\/span>   |<\/span>\r\n|<\/span>2<\/span>               |<\/span>Bloodborne<\/span>                      |<\/span>3<\/span>     |<\/span>7<\/span>.<\/span>0<\/span>           |<\/span>[<\/span>\u6700\u9ad8<\/span>,<\/span> \u8c9e\u5b50<\/span>,<\/span> \u8840\u6676\u6398\u308a\u304c\u5acc\u3060<\/span>]<\/span>                            |<\/span>\r\n|<\/span>3<\/span>               |<\/span>SEKIRO<\/span>:<\/span> SHADOWS<\/span> DIE<\/span> TWICE<\/span> |<\/span> \u96bb\u72fc<\/span> |<\/span>3<\/span>     |<\/span>6<\/span>.<\/span>0<\/span>           |<\/span>[<\/span>\u6700\u9ad8<\/span>,<\/span> \u96e3\u3057\u3059\u304e\u308b\u2026\u2026<\/span>,<\/span> \u8466\u540d\u4e00\u5fc3\u304c\u5012\u305b\u306a\u3044\u2026\u2026<\/span>]<\/span>             |<\/span>\r\n\r\nPress<\/span> CTRL<\/span>-<\/span>C<\/span> to<\/span> interrupt<\/span>\r\n<\/code><\/pre>\n
                        3. \u88c5\u8f7d\u90e8\u5206<\/h3>\n
                        \u5982\u679c\u4f7f\u7528Kafka Connect\uff08Sink Connector\uff09\u5c06\u6700\u540e\u901a\u8fc7Transform\u5b9a\u4e49\u7684\u7269\u5316\u89c6\u56fe\u6570\u636e\u52a0\u8f7d\u5230Elasticsearch\u4e2d\uff0c\u5219\u4efb\u52a1\u5b8c\u6210\u3002
                        \n\u4e0b\u9762\u7684\u8bed\u53e5\u5b9a\u4e49\u4e86\u5c06game_id\u4f5c\u4e3aElasticsearch\u7684_id\u8fdb\u884c\u540c\u6b65\u7684Kafka Connect\u3002<\/p>\n
                        ksql<\/span>><\/span> CREATE<\/span> SINK<\/span> CONNECTOR<\/span> `game-review-index-connect`<\/span> WITH<\/span>(<\/span>\r\n    'connector.class'<\/span>=<\/span>'io.confluent.connect.elasticsearch.ElasticsearchSinkConnector'<\/span>,<\/span>\r\n    'connection.url'<\/span>=<\/span>'http:\/\/elasticsearch:9200'<\/span>,<\/span>\r\n    'topics'<\/span>=<\/span>'V_GAME_REVIEW_INDEX'<\/span>,<\/span>\r\n    'key.ignore'<\/span> =<\/span> 'false'<\/span>,<\/span>\r\n    'type.name'<\/span> =<\/span> '_doc'<\/span>,<\/span>\r\n    'write.method'<\/span> =<\/span> 'upsert'<\/span>,<\/span>\r\n    'errors.tolerance'<\/span> =<\/span> 'all'<\/span>,<\/span>\r\n    'errors.deadletterqueue.topic.name'<\/span> =<\/span> 'V_GAME_REVIEW_INDEX_DEAD'<\/span>,<\/span>\r\n    'errors.deadletterqueue.topic.replication.factor'<\/span> =<\/span> '-1'<\/span>\r\n);<\/span>\r\n<\/code><\/pre>\n
                        \u9a8c\u8bc1\u884c\u52a8<\/h3>\n
                        \u8ba9\u6211\u4eec\u5c1d\u8bd5\u8fdb\u884c\u8fde\u7eed\u7684\u64cd\u4f5c\u9a8c\u8bc1\u3002
                        \n\u8bbf\u95eeKibana\uff0c\u7136\u540e\u64cd\u4f5cIndex Patterns \u2192 \u521b\u5efa\u7d22\u5f15\u6a21\u5f0f\uff0c\u4ee5\u521b\u5efa\u7d22\u5f15\u3002<\/p>\n
                        \u4ece\u521d\u59cb\u6570\u636e\u4e2d\u521b\u5efa\u7684\u7d22\u5f15\u5e94\u8be5\u5df2\u7ecf\u751f\u6210\u4e86\u3002<\/p>\n
                        \"search-1.png\"<\/div>\n
                        \u6211\u8ba4\u4e3a\u53ef\u4ee5\u901a\u8fc7\u8bbf\u95eeRails\u4e2d\u7684Game\u548cReview\u6a21\u578b\u5e76\u8fdb\u884c\u521b\u5efa\u3001\u66f4\u65b0\u6765\u786e\u8ba4\u641c\u7d22\u7d22\u5f15\u4e5f\u4f1a\u4ee5\u4f4e\u5ef6\u8fdf\u66f4\u65b0\u3002<\/p>\n
                        \"search-2.png\"<\/div>\n
                        \"search-3.png\"<\/div>\n
                        \u6700\u540e\u63ed\u6653<\/h2>\n
                        \u5b9e\u9645\u4e0a\uff0c\u8fd9\u4e2a PoC \u8bbe\u8ba1\u4e0e\u4e8b\u52a1\u6027\u6d88\u606f\u4f20\u9012\u7684\u95ee\u9898\u57df\u975e\u5e38\u76f8\u4f3c\uff0c\u5b83\u91c7\u7528\u4e86\u5fae\u670d\u52a1\u7684\u5b9e\u73b0\u6a21\u5f0f\u2014\u2014Transactional outbox\u3002\u8fc4\u4eca\u4e3a\u6b62\uff0c\u6211\u5728\u8fd9\u672c\u540d\u4e3a\u300a\u6570\u636e\u5bfc\u5411\u5e94\u7528\u7a0b\u5e8f\u8bbe\u8ba1\u300b\u7684\u53c2\u8003\u4e66\u4e2d\u591a\u6b21\u770b\u5230\u300c\u5728\u5fae\u670d\u52a1\u7684\u4e0a\u4e0b\u6587\u4e2d\u300d\u8fd9\u6837\u7684\u8868\u8ff0\uff0c\u6545\u610f\u8fdb\u884c\u4e86\u533a\u5206\uff0c\u4f46\u5b9e\u73b0\u5fae\u670d\u52a1\u5316\u7684\u65b9\u6cd5\u8bba\u5374\u5438\u6536\u4e86\u591a\u79cd\u8303\u5f0f\u5e76\u4e0d\u65ad\u53d1\u5c55\uff0c\u4f3c\u4e4e\u5e76\u6ca1\u6709\u592a\u591a\u5fc5\u8981\u8bbe\u7acb\u8fb9\u754c\u3002<\/p>\n
                        \u987a\u4fbf\u8bf4\u4e00\u53e5\uff0c\u8fd9\u4e2a PoC \u5b58\u5728\u4e00\u4e2a\u65e0\u6cd5\u907f\u514d\u7684\u4e0e\u5728\u751f\u4ea7\u73af\u5883\u4e2d\u6269\u5c55 Kafka \u76f8\u5173\u7684\u5206\u533a\u6d17\u724c\u95ee\u9898\u3002\u6211\u539f\u672c\u60f3\u8be6\u7ec6\u89e3\u91ca\u8fd9\u4e2a\u95ee\u9898\uff0c\u4f46\u4ec5\u4ec5\u89e3\u91ca\u4e00\u4e0b\u5c31\u53ef\u80fd\u5c06\u672c\u6587\u7684\u5185\u5bb9\u589e\u52a0\u4e00\u500d\u5de6\u53f3\uff0c\u6240\u4ee5\u6211\u6253\u7b97\u5c06\u89e3\u51b3\u65b9\u6848\u7684\u9a8c\u8bc1\u548c\u8be6\u7ec6\u8bf4\u660e\u63a8\u8fdf\u5230\u4ee5\u540e\u516c\u5f00\u3002<\/p>\n
                        \u660e\u5929\u5c06\u662f@gggk\u5148\u751f\u7684\u201c\u8fdb\u884cRails\u5e94\u7528\u6027\u80fd\u8c03\u67e5\u201d\u7684\u6d3b\u52a8\u3002\u656c\u8bf7\u671f\u5f85\uff01<\/p>\n
                        \n
                        \u4f7f\u7528\u66f4\u6539\u6570\u636e\u6355\u83b7\u6765\u4f18\u5316ETL\u8fc7\u7a0b\u7684\u65b9\u6cd5<\/p>\n
                        ksqlDB-\u7528\u4e8e\u6d41\u5904\u7406\u7684\u4e8b\u4ef6\u6d41\u6570\u636e\u5e93<\/p>\n
                        Kafka Connect – Confluent\u6587\u6863<\/p>\n
                        \u652f\u6301\u7684\u8fde\u63a5\u5668 – Confluent\u5e73\u53f05.5.0<\/p>\n
                        \u6570\u636e\u9a71\u52a8\u7684\u5e94\u7528\u7a0b\u5e8f\u8bbe\u8ba1 – O’Reilly\u7b2c3\u90e8\u5206<\/p>\n
                        ksqlDB\u4e0e\u5d4c\u5165\u5f0f\u8fde\u63a5<\/p>\n
                        \u4e8b\u52a1\u6027outbox – microservices.io<\/p>\n
                        \u6570\u636e\u9a71\u52a8\u7684\u5e94\u7528\u7a0b\u5e8f\u8bbe\u8ba1 – O’Reilly 12.2.2.4\u6d41\u5904\u7406\u5668\u548c\u670d\u52a1\u7b49\u591a\u4e2a\u90e8\u5206<\/p>\n
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