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src=\\\"http:\/\/www.weijingyun.com.cn\/wp-content\/uploads\/2020\/04\/event-300x88.png\\\" alt=\\\"\\\" width=\\\"539\\\" height=\\\"158\\\" \/><\/p>\n<p style=\\\"padding-left: 40px;\\\">Flink\u7684\u4ee5\u4e0b\u7279\u6027\u5b8c\u7f8e\u7684\u652f\u6301\u4e86\u4e8b\u4ef6\u9a71\u52a8\u578b\u5e94\u7528\uff1a<\/p>\n<ol>\n<li style=\\\"list-style-type: none;\\\">\n<ol>\n<li>\u9ad8\u6548\u7684\u72b6\u6001\u7ba1\u7406\uff1aFlink\u81ea\u5e26\u7684StateBackend\u53ef\u4ee5\u5f88\u597d\u7684\u5b58\u50a8\u4e2d\u95f4\u72b6\u6001\u4fe1\u606f\uff1b<\/li>\n<li>\u4e30\u5bcc\u7684\u7a97\u53e3\u652f\u6301\uff1aFlink\u652f\u6301\u5305\u542b\u6ed1\u52a8\u7a97\u53e3\u53ca\u5176\u4ed6\u7a97\u53e3\uff1b<\/li>\n<li>\u591a\u79cd\u65f6\u95f4\u8bed\u4e49\uff1aFlink\u652f\u6301EventTime\u3001ProcessingTime\u548cIngestionTime\uff1b<\/li>\n<li>\u4e0d\u540c\u7ea7\u522b\u7684\u5bb9\u9519\uff1aFlink\u652f\u6301At Least Once \u6216 Exactly Once \u5bb9\u9519\u7ea7\u522b\u3002<\/li>\n<\/ol>\n<\/li>\n<\/ol>\n<ul>\n<li><strong>\u5c0f\u7ed3<\/strong><\/li>\n<\/ul>\n<p style=\\\"padding-left: 40px;\\\">Apache Flink \u4ece\u5e95\u5c42\u652f\u6301\u4e86\u9488\u5bf9\u591a\u79cd\u4e0d\u540c\u573a\u666f\u7684\u5e94\u7528\u5f00\u53d1\u3002<\/p>\n<p style=\\\"padding-left: 40px;\\\">Flink \u7684\u4e3b\u8981\u7279\u6027\u5305\u62ec\uff1a\u6279\u6d41\u4e00\u4f53\u3001Exactly-Once\u3001\u5f3a\u5927\u7684\u72b6\u6001\u7ba1\u7406\u7b49\u3002\u540c\u65f6\uff0cFlink \u8fd8\u652f\u6301\u8fd0\u884c\u5728\u5305\u62ec YARN\u3001 Mesos\u3001Kubernetes \u5728\u5185\u7684\u591a\u79cd\u8d44\u6e90\u7ba1\u7406\u6846\u67b6\u4e0a\u3002\u963f\u91cc\u5df4\u5df4\u5df2\u7ecf\u7387\u5148\u5c06 Flink \u5728\u5168\u96c6\u56e2\u8fdb\u884c\u63a8\u5e7f\u4f7f\u7528\uff0c\u4e8b\u5b9e\u8bc1\u660e\uff0cFlink \u5df2\u7ecf\u53ef\u4ee5\u6269\u5c55\u5230\u6570\u5343\u6838\u5fc3\uff0c\u5176\u72b6\u6001\u53ef\u4ee5\u8fbe\u5230 TB \u7ea7\u522b\uff0c\u4e14\u4ecd\u80fd\u4fdd\u6301\u9ad8\u541e\u5410\u3001\u4f4e\u5ef6\u8fdf\u7684\u7279\u6027\u3002<br \/>\n\u56e0\u6b64\uff0cFlink \u5df2\u7ecf\u6210\u4e3a\u6211\u4eec\u5728\u5b9e\u65f6\u8ba1\u7b97\u7684\u9886\u57df\u7684\u7b2c\u4e00\u9009\u62e9\u3002<\/p>\n<p><strong>Flink \u7684\u67b6\u6784\u6a21\u578b<\/strong><\/p>\n<ul>\n<li><strong>Flink \u7684\u5206\u5c42\u6a21\u578b<\/strong><\/li>\n<\/ul>\n<p style=\\\"padding-left: 40px;\\\"><img class=\\\"wp-image-1031 aligncenter\\\" src=\\\"http:\/\/www.weijingyun.com.cn\/wp-content\/uploads\/2020\/04\/sql-300x126.png\\\" alt=\\\"\\\" width=\\\"445\\\" height=\\\"187\\\" \/><br \/>\nFlink \u81ea\u8eab\u63d0\u4f9b\u4e86\u4e0d\u540c\u7ea7\u522b\u7684\u62bd\u8c61\u6765\u652f\u6301\u6211\u4eec\u5f00\u53d1\u6d41\u5f0f\u6216\u8005\u6279\u91cf\u5904\u7406\u7a0b\u5e8f\uff0c\u4e0a\u56fe\u63cf\u8ff0\u4e86 Flink \u652f\u6301\u7684 4 \u79cd\u4e0d\u540c\u7ea7\u522b\u7684\u62bd\u8c61\u3002<\/p>\n<p style=\\\"padding-left: 40px;\\\">\u00a0 \u00a0 \u00a0 \u00a0 \u00a0\u5bf9\u4e8e\u6211\u4eec\u5f00\u53d1\u8005\u6765\u8bf4\uff0c\u5927\u591a\u6570\u5e94\u7528\u7a0b\u5e8f\u4e0d\u9700\u8981\u4e0a\u56fe\u4e2d\u7684\u6700\u4f4e\u7ea7\u522b\u7684Low-level\u62bd\u8c61\uff0c\u800c\u662f\u9488\u5bf9CoreAPI\u7f16\u7a0b\uff0c\u6bd4\u5982DataStreamAPI\uff08\u6709\u754c\/\u65e0\u754c\u6d41\uff09\u548cDDataSet API \uff08\u6709\u754c\u6570\u636e\u96c6\uff09\u3002\u8fd9\u4e9b\u6d41\u7545\u7684 API \u63d0\u4f9b\u4e86\u7528\u4e8e\u6570\u636e\u5904\u7406\u7684\u901a\u7528\u6784\u5efa\u5757\uff0c\u6bd4\u5982\u5404\u79cd\u5f62\u5f0f\u7528\u6237\u6307\u5b9a\u7684\u8f6c\u6362\u3001\u8fde\u63a5\u3001\u805a\u5408\u3001\u7a97\u53e3\u3001\u72b6\u6001\u7b49\u3002<\/p>\n<p style=\\\"padding-left: 40px;\\\">\u00a0 \u00a0 \u00a0TableAPI\u548cSQL\u662fFlink\u63d0\u4f9b\u7684\u66f4\u4e3a\u9ad8\u7ea7\u7684API\u64cd\u4f5c\uff0cFlinkSQL\u662fFlink\u5b9e\u65f6\u8ba1\u7b97\u4e3a\u7b80\u5316\u8ba1\u7b97\u6a21\u578b\uff0c\u964d\u4f4e\u7528\u6237\u4f7f\u7528\u5b9e\u65f6\u8ba1\u7b97\u95e8\u69db\u800c\u8bbe\u8ba1\u7684\u4e00\u5957\u7b26\u5408\u6807\u51c6SQL\u8bed\u4e49\u7684\u5f00\u53d1\u8bed\u8a00\u3002<\/p>\n<ul>\n<li><strong>Flink \u7684\u6570\u636e\u6d41\u6a21\u578b<\/strong><\/li>\n<\/ul>\n<p style=\\\"padding-left: 40px;\\\">\u00a0 \u00a0 \u00a0 \u00a0Flink \u7a0b\u5e8f\u7684\u57fa\u7840\u6784\u5efa\u6a21\u5757\u662f\u6d41\uff08Streams\uff09\u4e0e\u8f6c\u6362\uff08Transformations\uff09\uff0c\u6bcf\u4e00\u4e2a\u6570\u636e\u6d41\u8d77\u59cb\u4e8e\u4e00\u4e2a\u6216\u591a\u4e2a Source\uff0c\u5e76\u7ec8\u6b62\u4e8e\u4e00\u4e2a\u6216\u591a\u4e2a Sink\u3002\u6570\u636e\u6d41\u7c7b\u4f3c\u4e8e\u6709\u5411\u65e0\u73af\u56fe\uff08DAG\uff09\u3002<\/p>\n<p style=\\\"padding-left: 40px;\\\">\u6211\u4eec\u4ee5\u4e00\u4e2a\u6700\u7ecf\u5178\u7684 WordCount \u8ba1\u6570\u7a0b\u5e8f\u4e3e\u4f8b\uff1a<\/p>\n<p style=\\\"padding-left: 40px; text-align: left;\\\"><img class=\\\"wp-image-1032 aligncenter\\\" src=\\\"http:\/\/www.weijingyun.com.cn\/wp-content\/uploads\/2020\/04\/demo-300x241.png\\\" alt=\\\"\\\" width=\\\"522\\\" height=\\\"419\\\" \/><br \/>\n\u5728\u4e0a\u56fe\u4e2d\uff0c\u7a0b\u5e8f\u6d88\u8d39 Kafka \u6570\u636e\uff0c\u8fd9\u4fbf\u662f\u6211\u4eec\u7684 Source \u90e8\u5206\u3002\u7136\u540e\u7ecf\u8fc7 Map\u3001Keyby\u3001TimeWindow \u7b49\u65b9\u6cd5\u8fdb\u884c\u903b\u8f91\u8ba1\u7b97\uff0c\u8be5\u90e8\u5206\u5c31\u662f\u6211\u4eec\u7684 Transformation \u8f6c\u6362\u90e8\u5206\uff0c\u800c\u5176\u4e2d\u7684 Map\u3001Keyby\u3001TimeWindow \u7b49\u65b9\u6cd5\u88ab\u79f0\u4e3a\u7b97\u5b50\u3002\u901a\u5e38\uff0c\u7a0b\u5e8f\u4e2d\u7684\u8f6c\u6362\u4e0e\u6570\u636e\u6d41\u4e2d\u7684\u7b97\u5b50\u4e4b\u95f4\u5b58\u5728\u5bf9\u5e94\u5173\u7cfb\uff0c\u6709\u65f6\u4e00\u4e2a\u8f6c\u6362\u53ef\u80fd\u5305\u542b\u591a\u4e2a\u8f6c\u6362\u7b97\u5b50\u3002<\/p>\n<p style=\\\"padding-left: 40px;\\\">\u00a0 \u00a0 \u00a0 \u00a0\u6700\u540e\uff0c\u7ecf\u8fc7\u8ba1\u7b97\u7684\u6570\u636e\u4f1a\u88ab\u5199\u5165\u5230\u6211\u4eec\u6267\u884c\u7684\u6587\u4ef6\u4e2d\uff0c\u8fd9\u4fbf\u662f\u6211\u4eec\u7684 Sink \u90e8\u5206\u3002<\/p>\n<p style=\\\"padding-left: 40px;\\\">\u00a0 \u00a0 \u00a0 \u5b9e\u9645\u4e0a\u9762\u5bf9\u590d\u6742\u7684\u751f\u4ea7\u73af\u5883\uff0cFlink \u4efb\u52a1\u5927\u90fd\u662f\u5e76\u884c\u8fdb\u884c\u548c\u5206\u5e03\u5728\u5404\u4e2a\u8ba1\u7b97\u8282\u70b9\u4e0a\u3002\u5728 Flink \u4efb\u52a1\u6267\u884c\u671f\u95f4\uff0c\u6bcf\u4e00\u4e2a\u6570\u636e\u6d41\u90fd\u4f1a\u6709\u591a\u4e2a\u5206\u533a\uff0c\u5e76\u4e14\u6bcf\u4e2a\u7b97\u5b50\u90fd\u6709\u591a\u4e2a\u7b97\u5b50\u4efb\u52a1\u5e76\u884c\u8fdb\u884c\u3002\u7b97\u5b50\u5b50\u4efb\u52a1\u7684\u6570\u91cf\u662f\u8be5\u7279\u5b9a\u7b97\u5b50\u7684\u5e76\u884c\u5ea6\uff08Parallelism\uff09\uff0c\u5bf9\u5e76\u884c\u5ea6\u7684\u8bbe\u7f6e\u662f Flink \u4efb\u52a1\u8fdb\u884c\u8c03\u4f18\u7684\u91cd\u8981\u624b\u6bb5\uff0c\u6211\u4eec\u4f1a\u5728\u540e\u9762\u7684\u8bfe\u7a0b\u4e2d\u8be6\u7ec6\u8bb2\u89e3\u3002<\/p>\n<p style=\\\"padding-left: 40px;\\\"><img class=\\\" wp-image-1033 aligncenter\\\" src=\\\"http:\/\/www.weijingyun.com.cn\/wp-content\/uploads\/2020\/04\/streaming-300x200.png\\\" alt=\\\"\\\" width=\\\"438\\\" height=\\\"292\\\" \/><br \/>\n\u4ece\u4e0a\u56fe\u4e2d\u53ef\u4ee5\u770b\u5230\uff0c\u5728\u4e0a\u9762\u7684 map \u548c keyBy\/window \u4e4b\u95f4\uff0c\u4ee5\u53ca keyBy\/window \u548c Sink \u4e4b\u95f4\uff0c\u56e0\u4e3a\u5e76\u884c\u5ea6\u7684\u5dee\u5f02\uff0c\u6570\u636e\u6d41\u90fd\u8fdb\u884c\u4e86\u91cd\u65b0\u5206\u914d\u3002<\/p>\n<ul>\n<li><strong>Flink \u4e2d\u7684\u7a97\u53e3\u548c\u65f6\u95f4<\/strong><\/li>\n<\/ul>\n<p style=\\\"padding-left: 40px;\\\">\u00a0 \u00a0 \u00a0 \u00a0\u7a97\u53e3\u548c\u65f6\u95f4\u662f Flink \u4e2d\u7684\u6838\u5fc3\u6982\u5ff5\u4e4b\u4e00\u3002\u5728\u5b9e\u9645\u6210\u4ea7\u73af\u5883\u4e2d\uff0c\u5bf9\u6570\u636e\u6d41\u4e0a\u7684\u805a\u5408\u9700\u8981\u7531\u7a97\u53e3\u6765\u5212\u5b9a\u8303\u56f4\uff0c\u6bd4\u5982\u201c\u8ba1\u7b97\u8fc7\u53bb\u7684 5 \u5206\u949f\u201d\u6216\u8005\u201c\u6700\u540e 100 \u4e2a\u5143\u7d20\u7684\u548c\u201d\u3002<\/p>\n<p style=\\\"padding-left: 40px;\\\">\u00a0 \u00a0 \u00a0 \u00a0Flink \u652f\u6301\u4e86\u591a\u79cd\u7a97\u53e3\u6a21\u578b\u6bd4\u5982\u6eda\u52a8\u7a97\u53e3\uff08Tumbling Window\uff09\u3001\u6ed1\u52a8\u7a97\u53e3\uff08Sliding Window\uff09\u53ca\u4f1a\u8bdd\u7a97\u53e3\uff08Session Window\uff09\u7b49\u3002<\/p>\n<p style=\\\"padding-left: 40px;\\\">\u4e0b\u56fe\u5c55\u793a\u4e86 Flink \u652f\u6301\u7684\u591a\u79cd\u7a97\u53e3\u6a21\u578b\uff1a<\/p>\n<p><img class=\\\" wp-image-1034 aligncenter\\\" src=\\\"http:\/\/www.weijingyun.com.cn\/wp-content\/uploads\/2020\/04\/window-300x172.png\\\" alt=\\\"\\\" width=\\\"500\\\" height=\\\"287\\\" \/><\/p>\n<p style=\\\"padding-left: 40px;\\\">\u540c\u65f6\uff0cFlink \u652f\u6301\u4e86\u4e8b\u4ef6\u65f6\u95f4\uff08Event Time\uff09\u3001\u6444\u53d6\u65f6\u95f4\uff08Ingestion Time\uff09\u548c\u5904\u7406\u65f6\u95f4\uff08Processing Time\uff09\u4e09\u79cd\u65f6\u95f4\u8bed\u4e49\u7528\u6765\u6ee1\u8db3\u5b9e\u9645\u751f\u4ea7\u4e2d\u5bf9\u4e8e\u65f6\u95f4\u7684\u7279\u6b8a\u9700\u6c42\u3002<\/p>\n<p><img class=\\\"aligncenter wp-image-1035\\\" src=\\\"http:\/\/www.weijingyun.com.cn\/wp-content\/uploads\/2020\/04\/processiontime-300x147.png\\\" alt=\\\"\\\" 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