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                合規國際互聯網加速 OSASE為企業客戶提供高速穩定SD-WAN國際加速解決方案。 廣告
                ## **多線程復制** **MySQL5.5 及以前的復制:** 一般主從復制有三個線程且都是單線程: * Binlog Dump(主)? ‐‐> IO Thread(從)? ‐‐>? ? SQL Thread(從)。 而 master 這邊是通過并發線程提交,事務通過 LSN 寫入 binlog;但是 Slave 只有一個 IO 線程和 SQL 線程,是單線程, 所以在業務大的情況下就很容易造成主從延時。
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