{"id":14499,"date":"2023-12-04T15:46:43","date_gmt":"2023-12-04T07:46:43","guid":{"rendered":"https:\/\/wx.kaifamiao.info\/?p=14499"},"modified":"2023-12-12T15:05:21","modified_gmt":"2023-12-12T07:05:21","slug":"kafka-bao-liu-ce-lue-yuoffset-zhi-dao-ma","status":"publish","type":"post","link":"http:\/\/wx.kaifamiao.info\/index.php\/2023\/12\/04\/kafka-bao-liu-ce-lue-yuoffset-zhi-dao-ma\/","title":{"rendered":"Kafka\u4fdd\u7559\u7b56\u7565\u4e0eOffset\u77e5\u9053\u5417\uff1f"},"content":{"rendered":"<p>\u5728Kafka\u4e2d\uff0c\u6709\u4e24\u4e2a\u4e0e\u6d88\u606f\u4fdd\u7559\u548c\u504f\u79fb\uff08Offset\uff09\u76f8\u5173\u7684\u91cd\u8981\u6982\u5ff5\uff1a\u4fdd\u7559\u7b56\u7565\uff08Retention Policy\uff09\u548c\u504f\u79fb\uff08Offset\uff09\u3002<\/p>\n<h3><a id=\"1%E4%BF%9D%E7%95%99%E7%AD%96%E7%95%A5%EF%BC%88-retention-policy%EF%BC%89%EF%BC%9A\" class=\"anchor\" aria-hidden=\"true\"><span class=\"octicon octicon-link\"><\/span><\/a>1. \u4fdd\u7559\u7b56\u7565\uff08Retention Policy\uff09\uff1a<\/h3>\n<p>Kafka\u7684\u6d88\u606f\u4fdd\u7559\u7b56\u7565\u5b9a\u4e49\u4e86\u6d88\u606f\u5728\u4e3b\u9898\uff08Topic\uff09\u4e2d\u5b58\u50a8\u7684\u65f6\u95f4\u671f\u9650\u3002\u5177\u4f53\u800c\u8a00\uff0c\u5b83\u89c4\u5b9a\u4e86\u6d88\u606f\u5728\u4e3b\u9898\u4e2d\u4fdd\u7559\u7684\u65f6\u957f\uff0c\u8d85\u8fc7\u8fd9\u4e2a\u65f6\u957f\u7684\u6d88\u606f\u5c06\u4f1a\u88ab\u5220\u9664\u3002\u6709\u4ee5\u4e0b\u51e0\u79cd\u5e38\u89c1\u7684\u4fdd\u7559\u7b56\u7565\uff1a<\/p>\n<ul>\n<li>\n<strong>\u5220\u9664\uff08Delete\uff09\uff1a<\/strong> \u8fd9\u662f\u9ed8\u8ba4\u7684\u4fdd\u7559\u7b56\u7565\u3002\u6839\u636e\u65f6\u95f4\u6216\u65e5\u5fd7\u5927\u5c0f\uff0cKafka\u4f1a\u5220\u9664\u65e7\u7684\u6d88\u606f\uff0c\u4ee5\u4fbf\u817e\u51fa\u7a7a\u95f4\u7ed9\u65b0\u7684\u6d88\u606f\u3002\n<\/li>\n<li>\n<strong>Compact\uff08\u538b\u7f29\uff09\uff1a<\/strong> \u8fd9\u4e2a\u7b56\u7565\u4f1a\u786e\u4fdd\u5728\u4e00\u4e2a\u7ed9\u5b9a\u7684\u5206\u533a\u4e2d\uff0c\u6bcf\u4e2a\u6d88\u606f\u7684\u952e\uff08Key\uff09\u90fd\u662f\u552f\u4e00\u7684\u3002\u8fd9\u6837\u53ef\u4ee5\u907f\u514d\u5b58\u50a8\u76f8\u540c\u952e\u7684\u591a\u4e2a\u6d88\u606f\uff0c\u53ea\u4fdd\u7559\u6700\u65b0\u7684\u6d88\u606f\u3002\n<\/li>\n<\/ul>\n<p>\u4fdd\u7559\u7b56\u7565\u53ef\u4ee5\u5728\u521b\u5efa\u4e3b\u9898\u65f6\u8fdb\u884c\u914d\u7f6e\uff0c\u4e5f\u53ef\u4ee5\u5728\u8fd0\u884c\u65f6\u901a\u8fc7\u4fee\u6539\u4e3b\u9898\u7684\u914d\u7f6e\u8fdb\u884c\u8c03\u6574\u3002<\/p>\n<h3><a id=\"2%E5%81%8F%E7%A7%BB%EF%BC%88-offset%EF%BC%89%EF%BC%9A\" class=\"anchor\" aria-hidden=\"true\"><span class=\"octicon octicon-link\"><\/span><\/a>2. \u504f\u79fb\uff08Offset\uff09\uff1a<\/h3>\n<p>\u5728Kafka\u4e2d\uff0c\u6bcf\u4e2a\u5206\u533a\u4e2d\u7684\u6bcf\u6761\u6d88\u606f\u90fd\u6709\u4e00\u4e2a\u552f\u4e00\u7684\u504f\u79fb\u91cf\uff08Offset\uff09\u3002\u504f\u79fb\u91cf\u662f\u4e00\u4e2a64\u4f4d\u7684\u6570\u5b57\uff0c\u7528\u4e8e\u6807\u8bc6\u5206\u533a\u4e2d\u6d88\u606f\u7684\u4f4d\u7f6e\u3002\u751f\u4ea7\u8005\u751f\u4ea7\u6d88\u606f\u65f6\uff0c\u6bcf\u4e2a\u6d88\u606f\u90fd\u4f1a\u88ab\u5206\u914d\u4e00\u4e2a\u65b0\u7684\u504f\u79fb\u91cf\u3002<\/p>\n<p>\u504f\u79fb\u91cf\u7684\u4e3b\u8981\u4f5c\u7528\u662f\u7528\u4e8e\u8ffd\u8e2a\u6d88\u8d39\u8005\u5728\u5206\u533a\u4e2d\u7684\u8bfb\u53d6\u4f4d\u7f6e\u3002\u6d88\u8d39\u8005\u901a\u8fc7\u7ef4\u62a4\u504f\u79fb\u91cf\u6765\u8bb0\u5f55\u5df2\u7ecf\u6d88\u8d39\u7684\u6d88\u606f\u4f4d\u7f6e\uff0c\u4ee5\u4fbf\u5728\u5b95\u673a\u6216\u91cd\u65b0\u542f\u52a8\u540e\u80fd\u591f\u7ee7\u7eed\u4ece\u4e0a\u6b21\u7684\u4f4d\u7f6e\u8bfb\u53d6\u6d88\u606f\u3002<\/p>\n<p>\u603b\u4f53\u800c\u8a00\uff0c\u4fdd\u7559\u7b56\u7565\u51b3\u5b9a\u4e86\u6d88\u606f\u5728\u4e3b\u9898\u4e2d\u7684\u751f\u547d\u5468\u671f\uff0c\u800c\u504f\u79fb\u91cf\u7528\u4e8e\u8ddf\u8e2a\u6d88\u8d39\u8005\u5728\u4e3b\u9898\u4e2d\u7684\u8bfb\u53d6\u4f4d\u7f6e\u3002\u8fd9\u4e24\u4e2a\u6982\u5ff5\u5728Kafka\u4e2d\u90fd\u662f\u5173\u952e\u7684\uff0c\u5bf9\u4e8e\u6d88\u606f\u7684\u7ba1\u7406\u548c\u6d88\u8d39\u8005\u7684\u53ef\u9760\u6027\u5177\u6709\u91cd\u8981\u610f\u4e49\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5728Kafka\u4e2d\uff0c\u6709\u4e24\u4e2a\u4e0e\u6d88\u606f\u4fdd\u7559\u548c\u504f\u79fb\uff08Offset\uff09\u76f8\u5173\u7684\u91cd\u8981\u6982\u5ff5\uff1a\u4fdd\u7559\u7b56\u7565\uff08Retention Polic [&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-14499","post","type-post","status-publish","format-standard","hentry","category-kafka"],"_links":{"self":[{"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts\/14499","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=14499"}],"version-history":[{"count":2,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts\/14499\/revisions"}],"predecessor-version":[{"id":47939,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts\/14499\/revisions\/47939"}],"wp:attachment":[{"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/media?parent=14499"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/categories?post=14499"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/tags?post=14499"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}