{"id":32568,"date":"2026-08-11T10:00:00","date_gmt":"2026-08-11T02:00:00","guid":{"rendered":"https:\/\/cn.hostease.com\/blog\/?p=32568"},"modified":"2026-08-16T17:49:44","modified_gmt":"2026-08-16T09:49:44","slug":"mariadb-replication-lag","status":"publish","type":"post","link":"https:\/\/cn.hostease.com\/blog\/guides\/mariadb-replication-lag\/","title":{"rendered":"MariaDB \u4e3b\u4ece\u590d\u5236\u5ef6\u8fdf\u6392\u67e5\uff1a\u4ece binlog \u5230\u53ea\u8bfb\u526f\u672c\u4e00\u81f4\u6027"},"content":{"rendered":"<p><img decoding=\"async\" src=\"https:\/\/cn.hostease.com\/blog\/wp-content\/uploads\/2026\/08\/mariadb-replication-lag-cover.webp\" alt=\"MariaDB \u590d\u5236\u5ef6\u8fdf\u6392\u67e5\u5c01\u9762\" loading=\"lazy\" \/><\/p>\n<p>\u8fd9\u7bc7\u6307\u5357\u5e2e\u52a9\u4f60\u7cfb\u7edf\u6392\u67e5 MariaDB\uff08\u4e00\u79cd\u5173\u7cfb\u578b\u6570\u636e\u5e93\uff09\u4e3b\u4ece\u590d\u5236\u5ef6\u8fdf\u95ee\u9898\uff1a\u4ece binlog\uff08\u4e8c\u8fdb\u5236\u65e5\u5fd7\uff09\u673a\u5236\u7406\u89e3\u5ef6\u8fdf\u6765\u6e90\uff0c\u5230\u68c0\u67e5\u590d\u5236\u7ebf\u7a0b\u72b6\u6001\u3001\u5224\u65ad\u53ea\u8bfb\u526f\u672c\u662f\u5426\u4e00\u81f4\uff0c\u518d\u5230\u4fee\u590d\u548c\u9a8c\u8bc1\u3002\u590d\u5236\u5ef6\u8fdf\u4e0d\u662f\u7b80\u5355\u8c03\u4e00\u4e2a\u53c2\u6570\u5c31\u80fd\u89e3\u51b3\uff0c\u9700\u8981\u533a\u5206\u662f\u5199\u5165\u7aef\u3001\u4f20\u8f93\u7aef\u8fd8\u662f\u56de\u653e\u7aef\u7684\u95ee\u9898\u3002<\/p>\n<p>\u5982\u679c\u4f60\u5df2\u7ecf\u5728\u7528 MariaDB \u505a\u8bfb\u5199\u5206\u79bb\uff0c\u590d\u5236\u5ef6\u8fdf\u76f4\u63a5\u5f71\u54cd\u53ea\u8bfb\u526f\u672c\u7684\u6570\u636e\u65b0\u9c9c\u5ea6\u3002Hostease \u4e2d\u6587\u535a\u5ba2\u7684 <a href=\"https:\/\/cn.hostease.com\/blog\/guides\/mysql-slow-query-analysis\/\">MySQL \u6162\u67e5\u8be2\u5206\u6790<\/a>\u8bb2\u4e86\u5355\u5e93\u67e5\u8be2\u4f18\u5316\uff0c\u672c\u6587\u5219\u805a\u7126\u4e3b\u4ece\u67b6\u6784\u4e0b\u7684\u590d\u5236\u5ef6\u8fdf\u3002\u4e24\u8005\u7ecf\u5e38\u9700\u8981\u914d\u5408\u6392\u67e5\uff1a\u6162\u67e5\u8be2\u62d6\u6162\u4e3b\u5e93\u5199\u5165\uff0c\u4f1a\u95f4\u63a5\u5bfc\u81f4 binlog \u4ea7\u751f\u901f\u5ea6\u8d85\u8fc7\u4ece\u5e93\u56de\u653e\u901f\u5ea6\u3002<\/p>\n<h2>\u4e00\u3001\u7406\u89e3 binlog \u4e0e\u590d\u5236\u94fe\u8def<\/h2>\n<p>MariaDB \u4e3b\u4ece\u590d\u5236\u4f9d\u8d56 binlog\u3002\u4e3b\u5e93\u6bcf\u6b21\u5199\u5165\u64cd\u4f5c\u90fd\u4f1a\u8bb0\u5f55\u5230 binlog\uff0c\u4ece\u5e93\u7684 IO \u7ebf\u7a0b\u62c9\u53d6 binlog \u5199\u5165\u672c\u5730 relay log\uff0c\u518d\u7531 SQL \u7ebf\u7a0b\u56de\u653e relay log \u5b8c\u6210\u6570\u636e\u540c\u6b65\u3002\u590d\u5236\u5ef6\u8fdf\u53ef\u80fd\u51fa\u73b0\u5728\u4e09\u4e2a\u73af\u8282\uff1a\u4e3b\u5e93\u4ea7\u751f binlog \u592a\u5feb\u3001\u7f51\u7edc\u4f20\u8f93\u6162\u3001\u4ece\u5e93\u56de\u653e\u6162\u3002<\/p>\n<ul>\n<li><strong>IO \u7ebf\u7a0b<\/strong>\uff1a\u4ece\u4e3b\u5e93\u62c9\u53d6 binlog\u3002\u5982\u679c\u7f51\u7edc\u5e26\u5bbd\u4e0d\u8db3\u6216\u4e3b\u5e93 binlog \u79ef\u538b\uff0cIO \u7ebf\u7a0b\u4f1a\u843d\u540e\u3002<\/li>\n<li><strong>SQL \u7ebf\u7a0b<\/strong>\uff1a\u56de\u653e relay log\u3002\u5982\u679c\u4ece\u5e93\u6267\u884c\u6162\u67e5\u8be2\u6216\u5927\u4e8b\u52a1\uff0cSQL \u7ebf\u7a0b\u4f1a\u79ef\u538b\u3002<\/li>\n<li><strong>Seconds_Behind_Master<\/strong>\uff1a\u4ece\u5e93\u843d\u540e\u4e3b\u5e93\u7684\u79d2\u6570\u3002\u8fd9\u4e2a\u6307\u6807\u662f\u6392\u67e5\u7684\u7b2c\u4e00\u5165\u53e3\u3002<\/li>\n<\/ul>\n<p><img decoding=\"async\" src=\"https:\/\/cn.hostease.com\/blog\/wp-content\/uploads\/2026\/08\/mariadb-replication-lag-flow.webp\" alt=\"\u590d\u5236\u94fe\u8def\u4e0e\u5ef6\u8fdf\u73af\u8282\" loading=\"lazy\" \/><\/p>\n<h2>\u4e8c\u3001\u68c0\u67e5\u590d\u5236\u72b6\u6001<\/h2>\n<p>\u7528 SHOW SLAVE STATUS \u67e5\u770b\u590d\u5236\u7ebf\u7a0b\u8fd0\u884c\u72b6\u6001\u548c\u5ef6\u8fdf\u6307\u6807\u3002<\/p>\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"bash\" data-enlighter-linenumbers=\"false\">SHOW SLAVE STATUS \\G<\/pre>\n<p>\u91cd\u70b9\u5173\u6ce8\u4ee5\u4e0b\u5b57\u6bb5\uff1aSlave_IO_Running \u548c Slave_SQL_Running \u90fd\u5e94\u4e3a Yes\uff1bSeconds_Behind_Master \u8868\u793a\u5ef6\u8fdf\u79d2\u6570\uff0c0 \u8868\u793a\u540c\u6b65\uff0c\u6570\u503c\u8d8a\u5927\u5ef6\u8fdf\u8d8a\u4e25\u91cd\uff1bLast_IO_Error \u548c Last_SQL_Error \u8bb0\u5f55\u6700\u8fd1\u7684\u9519\u8bef\u4fe1\u606f\u3002\u5982\u679c IO \u7ebf\u7a0b\u65ad\u4e86\uff0c\u901a\u5e38\u770b\u5230\u8fde\u63a5\u8d85\u65f6\u6216\u6743\u9650\u9519\u8bef\uff1b\u5982\u679c SQL \u7ebf\u7a0b\u62a5\u9519\uff0c\u901a\u5e38\u662f\u56de\u653e\u65f6\u9047\u5230\u7ea6\u675f\u51b2\u7a81\u6216\u8868\u4e0d\u5b58\u5728\u3002<\/p>\n<p>\u5982\u679c Seconds_Behind_Master \u6301\u7eed\u589e\u957f\u800c\u4e0d\u662f\u6ce2\u52a8\uff0c\u8bf4\u660e\u4ece\u5e93\u56de\u653e\u901f\u5ea6\u8ddf\u4e0d\u4e0a\u4e3b\u5e93\u5199\u5165\u901f\u5ea6\uff0c\u9700\u8981\u6392\u67e5\u56de\u653e\u74f6\u9888\u3002\u5982\u679c\u6570\u503c\u6ce2\u52a8\u4f46\u5076\u5c14\u56de\u5230 0\uff0c\u901a\u5e38\u662f\u7f51\u7edc\u95f4\u6b47\u6027\u5ef6\u8fdf\u3002<\/p>\n<h2>\u4e09\u3001\u533a\u5206\u4e09\u79cd\u5ef6\u8fdf\u6839\u56e0<\/h2>\n<p>\u7b2c\u4e00\u79cd\u662f\u4e3b\u5e93\u5199\u5165\u538b\u529b\u8fc7\u5927\u3002\u9ad8\u5e76\u53d1\u5199\u5165\u65f6 binlog \u4ea7\u751f\u901f\u5ea6\u5feb\u4e8e\u4ece\u5e93\u62c9\u53d6\u901f\u5ea6\uff0c\u5373\u4f7f\u7f51\u7edc\u548c\u4ece\u5e93\u90fd\u6b63\u5e38\u4e5f\u4f1a\u5ef6\u8fdf\u3002\u6392\u67e5\u65b9\u6cd5\u662f\u5728\u4e3b\u5e93\u76d1\u63a7 binlog \u4ea7\u751f\u901f\u7387\uff0c\u5982\u679c\u6bcf\u79d2\u4ea7\u751f\u5927\u91cf binlog \u4e8b\u4ef6\uff0c\u8bf4\u660e\u5199\u5165\u538b\u529b\u662f\u4e3b\u56e0\u3002\u8fd9\u7c7b\u95ee\u9898\u9700\u8981\u4ece\u5e94\u7528\u5c42\u51cf\u5c11\u5199\u5165\uff08\u5982\u6279\u91cf\u5199\u5165\u3001\u5408\u5e76\u66f4\u65b0\uff09\u6216\u589e\u52a0\u4ece\u5e93\u5206\u62c5\u8bfb\u538b\u529b\u3002<\/p>\n<p>\u7b2c\u4e8c\u79cd\u662f\u5927\u4e8b\u52a1\u56de\u653e\u6162\u3002\u4e00\u4e2a\u4e8b\u52a1\u5305\u542b\u4e0a\u4e07\u884c\u66f4\u65b0\u65f6\uff0cSQL \u7ebf\u7a0b\u9700\u8981\u9010\u884c\u56de\u653e\uff0c\u671f\u95f4\u65e0\u6cd5\u5904\u7406\u540e\u7eed\u4e8b\u52a1\u3002\u6392\u67e5\u65b9\u6cd5\u662f\u68c0\u67e5\u4ece\u5e93\u7684 relay log \u5927\u5c0f\uff0c\u5982\u679c\u5355\u4e2a relay log \u6587\u4ef6\u5f02\u5e38\u5927\uff0c\u901a\u5e38\u5305\u542b\u5927\u4e8b\u52a1\u3002\u4fee\u590d\u65b9\u6cd5\u662f\u5728\u5e94\u7528\u5c42\u62c6\u5206\u5927\u4e8b\u52a1\u4e3a\u5c0f\u6279\u6b21\u63d0\u4ea4\uff0c\u907f\u514d\u5355\u4e8b\u52a1\u9501\u5b9a\u592a\u4e45\u3002\u5982\u679c\u4f60\u505a\u8fc7 <a href=\"https:\/\/cn.hostease.com\/blog\/guides\/wordpress-database-cleanup-query-optimization\/\">WordPress \u6570\u636e\u5e93\u4f18\u5316<\/a>\uff0c\u5176\u4e2d\u6e05\u7406\u5197\u4f59\u6570\u636e\u7684\u64cd\u4f5c\u5982\u679c\u4e0d\u5206\u6279\u6267\u884c\uff0c\u4e5f\u4f1a\u4ea7\u751f\u5927\u4e8b\u52a1\u62d6\u6162\u590d\u5236\u3002<\/p>\n<p>\u7b2c\u4e09\u79cd\u662f\u4ece\u5e93\u56de\u653e\u67e5\u8be2\u6162\u3002SQL \u7ebf\u7a0b\u56de\u653e\u65f6\u5982\u679c\u9047\u5230\u65e0\u7d22\u5f15\u7684 UPDATE \u6216 DELETE\uff0c\u5355\u6761\u8bed\u53e5\u5c31\u53ef\u80fd\u8017\u65f6\u6570\u79d2\u3002\u6392\u67e5\u65b9\u6cd5\u662f\u5728\u4ece\u5e93\u5f00\u542f\u6162\u67e5\u8be2\u65e5\u5fd7\uff0c\u786e\u8ba4\u56de\u653e\u9636\u6bb5\u662f\u5426\u6709\u6162 SQL\u3002\u4fee\u590d\u65b9\u6cd5\u548c <a href=\"https:\/\/cn.hostease.com\/blog\/guides\/mysql-slow-query-analysis\/\">\u6162\u67e5\u8be2\u6cbb\u7406<\/a>\u4e00\u6837\uff1a\u7528 EXPLAIN \u5206\u6790\u6267\u884c\u8ba1\u5212\uff0c\u8865\u5145\u7f3a\u5931\u7d22\u5f15\u3002<\/p>\n<h2>\u56db\u3001\u5e76\u884c\u590d\u5236\u52a0\u901f\u56de\u653e<\/h2>\n<p>MariaDB 10.0+ \u652f\u6301\u5e76\u884c\u590d\u5236\uff08\u591a\u7ebf\u7a0b\u56de\u653e\uff09\u3002\u9ed8\u8ba4 SQL \u7ebf\u7a0b\u662f\u5355\u7ebf\u7a0b\u4e32\u884c\u56de\u653e\uff0c\u5f00\u542f\u5e76\u884c\u590d\u5236\u540e\u53ef\u4ee5\u6309\u6570\u636e\u5e93\u6216\u4e8b\u52a1\u7ec4\u5e76\u53d1\u56de\u653e\uff0c\u663e\u8457\u63d0\u5347\u541e\u5410\u3002<\/p>\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"bash\" data-enlighter-linenumbers=\"false\">SET GLOBAL slave_parallel_threads = 8;\nSET GLOBAL slave_parallel_mode = optimistic;\nSTOP SLAVE; START SLAVE;<\/pre>\n<p>\u5e76\u884c\u590d\u5236\u4e0d\u662f\u4e07\u80fd\u7684\u3002\u5982\u679c\u4e8b\u52a1\u4e4b\u95f4\u6709\u4f9d\u8d56\u5173\u7cfb\uff08\u5982\u540c\u4e00\u5f20\u8868\u7684\u8fde\u7eed\u66f4\u65b0\uff09\uff0c\u5e76\u884c\u5ea6\u6709\u9650\u3002optimistic \u6a21\u5f0f\u5141\u8bb8\u5e76\u53d1\u56de\u653e\u5e76\u5728\u51b2\u7a81\u65f6\u91cd\u8bd5\uff0c\u9002\u5408\u5927\u591a\u6570\u573a\u666f\u3002\u5f00\u542f\u540e\u8981\u76d1\u63a7 Seconds_Behind_Master \u662f\u5426\u4e0b\u964d\uff0c\u4ee5\u53ca\u662f\u5426\u51fa\u73b0\u56de\u653e\u51b2\u7a81\u9519\u8bef\u3002\u5982\u679c\u56de\u653e\u51b2\u7a81\u9891\u7e41\u51fa\u73b0\uff08\u8868\u73b0\u4e3a\u4ece\u5e93\u9519\u8bef\u65e5\u5fd7\u4e2d\u5927\u91cf deadlock \u6216 retry \u8bb0\u5f55\uff09\uff0c\u8bf4\u660e\u4e8b\u52a1\u4f9d\u8d56\u5ea6\u9ad8\uff0c\u6b64\u65f6\u5e94\u8be5\u964d\u56de conservative \u6a21\u5f0f\u6216\u51cf\u5c11\u5e76\u884c\u7ebf\u7a0b\u6570\uff0c\u800c\u4e0d\u662f\u76f2\u76ee\u8ffd\u6c42\u9ad8\u5e76\u53d1\u3002<\/p>\n<p>\u53e6\u5916\u8981\u6ce8\u610f\u4ece\u5e93\u786c\u4ef6\u914d\u7f6e\u3002\u5982\u679c\u4ece\u5e93 CPU \u6216\u78c1\u76d8\u6027\u80fd\u4f4e\u4e8e\u4e3b\u5e93\uff0c\u5373\u4f7f\u5f00\u542f\u5e76\u884c\u590d\u5236\u4e5f\u96be\u4ee5\u8ffd\u5e73\u3002\u4ece\u5e93\u7684 binlog \u56de\u653e\u672c\u8d28\u4e0a\u662f\u91cd\u653e\u5199\u64cd\u4f5c\uff0c\u5bf9\u78c1\u76d8 I\/O \u8981\u6c42\u548c\u4e3b\u5e93\u4e00\u6837\u9ad8\u3002\u5982\u679c\u4ece\u5e93\u7528\u7684\u662f\u673a\u68b0\u786c\u76d8\u800c\u4e3b\u5e93\u662f NVMe SSD\uff0c\u590d\u5236\u5ef6\u8fdf\u51e0\u4e4e\u4e0d\u53ef\u907f\u514d\u3002\u5efa\u8bae\u4ece\u5e93\u78c1\u76d8\u6027\u80fd\u4e0d\u4f4e\u4e8e\u4e3b\u5e93\uff0c\u5185\u5b58\u914d\u7f6e\u81f3\u5c11\u4e0e\u4e3b\u5e93\u76f8\u5f53\uff0c\u8fd9\u6837\u56de\u653e\u624d\u4e0d\u4f1a\u56e0\u786c\u4ef6\u74f6\u9888\u800c\u6301\u7eed\u843d\u540e\u3002<\/p>\n<h2>\u4e94\u3001\u53ea\u8bfb\u526f\u672c\u4e00\u81f4\u6027\u9a8c\u8bc1<\/h2>\n<p><img decoding=\"async\" src=\"https:\/\/cn.hostease.com\/blog\/wp-content\/uploads\/2026\/08\/mariadb-replication-lag-comparison.webp\" alt=\"\u5ef6\u8fdf\u6839\u56e0\u4e0e\u4fee\u590d\u5bf9\u6bd4\" loading=\"lazy\" \/><\/p>\n<p>\u4fee\u590d\u5ef6\u8fdf\u540e\u8981\u9a8c\u8bc1\u53ea\u8bfb\u526f\u672c\u6570\u636e\u4e0e\u4e3b\u5e93\u4e00\u81f4\u3002\u7528 <code>pt-table-checksum<\/code> \u5728\u4e3b\u5e93\u6821\u9a8c\u8868\u6570\u636e\uff0c\u6821\u9a8c\u7ed3\u679c\u8bb0\u5f55\u5230 percona \u5e93\uff0c\u4ece\u5e93\u590d\u5236\u8be5\u6821\u9a8c\u7ed3\u679c\u540e\u5bf9\u6bd4\u3002\u5982\u679c\u53d1\u73b0\u4e0d\u4e00\u81f4\uff0c\u7528 <code>pt-table-sync<\/code> \u4fee\u590d\u3002<\/p>\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"bash\" data-enlighter-linenumbers=\"false\">pt-table-checksum --host=master_host --databases=mydb\npt-table-sync --execute --print --sync-to-master h=slave_host,D=mydb,t=mytable<\/pre>\n<p>\u4e00\u81f4\u6027\u9a8c\u8bc1\u5e94\u8be5\u5728\u4f4e\u5cf0\u671f\u6267\u884c\uff0c\u56e0\u4e3a\u6821\u9a8c\u5de5\u5177\u672c\u8eab\u4f1a\u4ea7\u751f\u989d\u5916\u67e5\u8be2\u8d1f\u8f7d\u3002\u5982\u679c\u4f60\u5728\u505a <a href=\"https:\/\/cn.hostease.com\/blog\/guides\/container-security-hardening\/\">\u5bb9\u5668\u5b89\u5168\u52a0\u56fa<\/a>\u540e\u7684\u6570\u636e\u5e93\u8fc1\u79fb\u9a8c\u8bc1\uff0c\u590d\u5236\u4e00\u81f4\u6027\u68c0\u67e5\u662f\u786e\u8ba4\u8fc1\u79fb\u6ca1\u6709\u4e22\u6570\u636e\u7684\u91cd\u8981\u6b65\u9aa4\u3002<\/p>\n<h2>\u516d\u3001\u957f\u671f\u76d1\u63a7\u4e0e\u9884\u9632<\/h2>\n<p>\u590d\u5236\u5ef6\u8fdf\u95ee\u9898\u5bb9\u6613\u590d\u53d1\u3002\u5efa\u8bae\u957f\u671f\u76d1\u63a7 Seconds_Behind_Master\uff0c\u8bbe\u7f6e\u544a\u8b66\u9608\u503c\uff08\u5982\u8d85\u8fc7 60 \u79d2\u544a\u8b66\uff09\u3002\u540c\u65f6\u76d1\u63a7\u4e3b\u5e93 binlog \u79ef\u538b\u91cf\u548c\u4ece\u5e93 relay log \u79ef\u538b\u91cf\u3002\u5982\u679c\u5ef6\u8fdf\u53cd\u590d\u51fa\u73b0\uff0c\u4ece\u5e94\u7528\u5c42\u51cf\u5c11\u5927\u4e8b\u52a1\u548c\u70ed\u70b9\u5199\u5165\u662f\u6839\u672c\u89e3\u6cd5\uff0c\u5355\u7eaf\u8c03\u590d\u5236\u53c2\u6570\u53ea\u80fd\u7f13\u89e3\u4e0d\u80fd\u6839\u6cbb\u3002<\/p>\n<h2>\u603b\u7ed3<\/h2>\n<p>MariaDB \u4e3b\u4ece\u590d\u5236\u5ef6\u8fdf\u6392\u67e5\u8981\u533a\u5206\u4e09\u4e2a\u73af\u8282\uff1a\u4e3b\u5e93\u5199\u5165\u538b\u529b\u3001\u7f51\u7edc\u4f20\u8f93\u3001\u4ece\u5e93\u56de\u653e\u3002SHOW SLAVE STATUS \u662f\u7b2c\u4e00\u5165\u53e3\uff0cSeconds_Behind_Master \u6301\u7eed\u589e\u957f\u8bf4\u660e\u56de\u653e\u8ddf\u4e0d\u4e0a\u3002\u5927\u4e8b\u52a1\u548c\u65e0\u7d22\u5f15\u67e5\u8be2\u662f\u6700\u5e38\u89c1\u7684\u56de\u653e\u74f6\u9888\uff0c\u62c6\u5206\u4e8b\u52a1\u548c\u8865\u7d22\u5f15\u662f\u6839\u672c\u4fee\u590d\u3002\u5f00\u542f\u5e76\u884c\u590d\u5236\u53ef\u4ee5\u63d0\u5347\u56de\u653e\u541e\u5410\uff0c\u4f46\u4e8b\u52a1\u4f9d\u8d56\u4f1a\u9650\u5236\u5e76\u884c\u5ea6\u3002\u5bf9\u4e8e Hostease \u73af\u5883\u4e0a\u7684\u8bfb\u5199\u5206\u79bb\u67b6\u6784\uff0c\u5b9a\u671f\u76d1\u63a7\u590d\u5236\u5ef6\u8fdf\u548c\u505a\u4e00\u81f4\u6027\u6821\u9a8c\uff0c\u53ef\u4ee5\u907f\u514d\u53ea\u8bfb\u526f\u672c\u6570\u636e\u8fc7\u671f\u5f71\u54cd\u4e1a\u52a1\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u4ece binlog \u673a\u5236\u3001\u590d\u5236\u7ebf\u7a0b\u72b6\u6001\u5230\u53ea\u8bfb\u526f\u672c\u4e00\u81f4\u6027\uff0c\u7cfb\u7edf\u6392\u67e5 MariaDB 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