{"id":14579,"date":"2023-12-04T15:53:29","date_gmt":"2023-12-04T07:53:29","guid":{"rendered":"https:\/\/wx.kaifamiao.info\/?p=14579"},"modified":"2023-12-12T16:26:03","modified_gmt":"2023-12-12T08:26:03","slug":"kafka-zhong-ru-he-kong-zhi-xiao-fei-de-wei-zhi","status":"publish","type":"post","link":"http:\/\/wx.kaifamiao.info\/index.php\/2023\/12\/04\/kafka-zhong-ru-he-kong-zhi-xiao-fei-de-wei-zhi\/","title":{"rendered":"Kafka\u4e2d\u5982\u4f55\u63a7\u5236\u6d88\u8d39\u7684\u4f4d\u7f6e\uff1f"},"content":{"rendered":"<p>\u5728 Kafka \u4e2d\uff0c\u6d88\u8d39\u8005\uff08Consumer\uff09\u7684\u4f4d\u7f6e\u662f\u7531\u504f\u79fb\u91cf\uff08Offset\uff09\u6765\u63a7\u5236\u7684\u3002\u504f\u79fb\u91cf\u8868\u793a\u6d88\u8d39\u8005\u5728\u5206\u533a\u4e2d\u8bfb\u53d6\u7684\u6d88\u606f\u4f4d\u7f6e\uff0c\u7528\u4e8e\u8ffd\u8e2a\u6d88\u8d39\u8005\u5728\u4e3b\u9898\u7684\u5206\u533a\u4e2d\u7684\u8fdb\u5ea6\u3002Kafka \u63d0\u4f9b\u4e86\u51e0\u79cd\u673a\u5236\u6765\u63a7\u5236\u548c\u7ba1\u7406\u6d88\u8d39\u8005\u7684\u504f\u79fb\u91cf\uff1a<\/p>\n<ol>\n<li>\n<strong>\u624b\u52a8\u63d0\u4ea4\u504f\u79fb\u91cf\uff1a<\/strong><\/p>\n<ul>\n<li>\u6d88\u8d39\u8005\u53ef\u4ee5\u9009\u62e9\u624b\u52a8\u63d0\u4ea4\u504f\u79fb\u91cf\uff0c\u5373\u5728\u5904\u7406\u5b8c\u4e00\u6279\u6d88\u606f\u540e\u663e\u5f0f\u5730\u544a\u77e5 Kafka \u670d\u52a1\u5668\u5f53\u524d\u7684\u504f\u79fb\u91cf\u3002\u8fd9\u901a\u8fc7\u8c03\u7528 <code>commitSync<\/code> \u6216 <code>commitAsync<\/code> \u65b9\u6cd5\u6765\u5b9e\u73b0\u3002<\/li>\n<\/ul>\n<pre><code class=\"language-java\">consumer.commitSync(); \/\/ \u540c\u6b65\u63d0\u4ea4\n\/\/ \u6216\nconsumer.commitAsync(); \/\/ \u5f02\u6b65\u63d0\u4ea4\n<\/code><\/pre>\n<p>\u624b\u52a8\u63d0\u4ea4\u504f\u79fb\u91cf\u7ed9\u4e88\u4e86\u5f00\u53d1\u8005\u66f4\u591a\u7684\u63a7\u5236\u6743\uff0c\u4f46\u4e5f\u9700\u8981\u8c28\u614e\u5904\u7406\uff0c\u4ee5\u786e\u4fdd\u504f\u79fb\u91cf\u88ab\u6b63\u786e\u63d0\u4ea4\uff0c\u907f\u514d\u6570\u636e\u7684\u4e22\u5931\u6216\u91cd\u590d\u6d88\u8d39\u3002\n<\/li>\n<li>\n<strong>\u81ea\u52a8\u63d0\u4ea4\u504f\u79fb\u91cf\uff1a<\/strong><\/p>\n<ul>\n<li>\u6d88\u8d39\u8005\u53ef\u4ee5\u9009\u62e9\u8ba9 Kafka \u81ea\u52a8\u5b9a\u671f\u63d0\u4ea4\u504f\u79fb\u91cf\uff0c\u901a\u8fc7\u914d\u7f6e <code>enable.auto.commit<\/code> \u6765\u542f\u7528\u81ea\u52a8\u63d0\u4ea4\uff0c\u5e76\u8bbe\u7f6e <code>auto.commit.interval.ms<\/code> \u6765\u6307\u5b9a\u63d0\u4ea4\u7684\u65f6\u95f4\u95f4\u9694\u3002<\/li>\n<\/ul>\n<pre><code class=\"language-java\">properties.put(&quot;enable.auto.commit&quot;, &quot;true&quot;);\nproperties.put(&quot;auto.commit.interval.ms&quot;, &quot;1000&quot;); \/\/ \u63d0\u4ea4\u95f4\u9694\u4e3a1\u79d2\n<\/code><\/pre>\n<p>\u81ea\u52a8\u63d0\u4ea4\u504f\u79fb\u91cf\u51cf\u8f7b\u4e86\u5f00\u53d1\u8005\u7684\u8d1f\u62c5\uff0c\u4f46\u9700\u8981\u6ce8\u610f\u53ef\u80fd\u51fa\u73b0\u63d0\u4ea4\u5931\u8d25\u6216\u63d0\u4ea4\u9891\u7387\u8fc7\u4f4e\u7684\u60c5\u51b5\u3002\n<\/li>\n<li>\n<strong>\u504f\u79fb\u91cf\u91cd\u7f6e\uff1a<\/strong><\/p>\n<ul>\n<li>\u5f53\u6d88\u8d39\u8005\u53d1\u751f\u6545\u969c\u6216\u91cd\u65b0\u542f\u52a8\u65f6\uff0c\u53ef\u4ee5\u901a\u8fc7\u914d\u7f6e <code>auto.offset.reset<\/code> \u6765\u6307\u5b9a\u6d88\u8d39\u8005\u5728\u627e\u4e0d\u5230\u6709\u6548\u504f\u79fb\u91cf\u65f6\u7684\u884c\u4e3a\u3002\u53ef\u4ee5\u9009\u62e9\u4ece\u6700\u65e9\u7684\u504f\u79fb\u91cf\u5f00\u59cb\u6d88\u8d39\uff08<code>earliest<\/code>\uff09\u6216\u4ece\u6700\u65b0\u7684\u504f\u79fb\u91cf\u5f00\u59cb\u6d88\u8d39\uff08<code>latest<\/code>\uff09\u3002<\/li>\n<\/ul>\n<pre><code class=\"language-java\">properties.put(&quot;auto.offset.reset&quot;, &quot;earliest&quot;);\n<\/code><\/pre>\n<\/li>\n<li>\n<strong>seek \u65b9\u6cd5\uff1a<\/strong><\/p>\n<ul>\n<li>\u6d88\u8d39\u8005\u8fd8\u53ef\u4ee5\u4f7f\u7528 <code>seek<\/code> \u65b9\u6cd5\u6765\u624b\u52a8\u8bbe\u7f6e\u6d88\u8d39\u7684\u4f4d\u7f6e\uff0c\u5373\u8bbe\u7f6e\u8981\u8bfb\u53d6\u7684\u5206\u533a\u548c\u504f\u79fb\u91cf\u3002<\/li>\n<\/ul>\n<pre><code class=\"language-java\">consumer.seek(new TopicPartition(&quot;topicName&quot;, 0), 10); \/\/ \u4ece\u5206\u533a0\u7684\u504f\u79fb\u91cf10\u5f00\u59cb\u6d88\u8d39\n<\/code><\/pre>\n<\/li>\n<\/ol>\n<p>\u8fd9\u4e9b\u673a\u5236\u4f7f\u5f97\u6d88\u8d39\u8005\u80fd\u591f\u66f4\u7075\u6d3b\u5730\u63a7\u5236\u6d88\u8d39\u7684\u4f4d\u7f6e\uff0c\u4ece\u800c\u6ee1\u8db3\u4e0d\u540c\u573a\u666f\u4e0b\u7684\u9700\u6c42\u3002\u9009\u62e9\u9002\u5f53\u7684\u504f\u79fb\u91cf\u7ba1\u7406\u7b56\u7565\u53d6\u51b3\u4e8e\u5e94\u7528\u7a0b\u5e8f\u7684\u8981\u6c42\uff0c\u4ee5\u53ca\u5bf9\u6570\u636e\u4e00\u81f4\u6027\u548c\u53ef\u9760\u6027\u7684\u671f\u671b\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5728 Kafka \u4e2d\uff0c\u6d88\u8d39\u8005\uff08Consumer\uff09\u7684\u4f4d\u7f6e\u662f\u7531\u504f\u79fb\u91cf\uff08Offset\uff09\u6765\u63a7\u5236\u7684\u3002\u504f\u79fb\u91cf\u8868\u793a\u6d88\u8d39\u8005\u5728\u5206\u533a [&hellip;]<\/p>\n","protected":false},"author":9,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[122],"tags":[],"class_list":["post-14579","post","type-post","status-publish","format-standard","hentry","category-kafka"],"_links":{"self":[{"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts\/14579","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/users\/9"}],"replies":[{"embeddable":true,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/comments?post=14579"}],"version-history":[{"count":2,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts\/14579\/revisions"}],"predecessor-version":[{"id":47978,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts\/14579\/revisions\/47978"}],"wp:attachment":[{"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/media?parent=14579"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/categories?post=14579"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/tags?post=14579"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}