dongyu5482 2011-01-21 09:32
浏览 83
已采纳

在PHP中将Firebird与MySQL同步

I have two databases, one is a Firebird database, other is a MySQL database.

Firebird database is the main one where the information changes. I have to synchronize those changes to the other MySQL database.

I have no control over the Firebird one - I can just SELECT from it. I cannot add triggers, events or similar. I have all the control on the MySQL database.

The synchronization has to be done through 'internet' as these two servers are not connected in any way and are on different locations.

Synchronization has to be done in PHP on the server that also hosts the MySQL database.

Currently I just go through every record (every 15 minutes), calculate the hash of the rows, compare two hashes and if they don't match, I update the whole row. It works but just seems very wrong and not optimized in any way.

Is there any other way to do this? I am missing something?

Thank you.

  • 写回答

1条回答 默认 最新

  • duandi1636 2011-01-21 10:09
    关注

    I have made the same thing once and I don't think there is a generaly better solution.

    You can only more or less optimize what you have so far. For example:

    • If some of the tables have a column with the "latest update" information, you can select only those that were changed since the last sync.
    • You can change the comparison mechanism - instead of comparing and updating whole rows, you can compare individual columns and on the MySQL side update only the changed ones. I believe that it would speed things up in case of MyISAM tables, but probably not if you use InnoDB.
    本回答被题主选为最佳回答 , 对您是否有帮助呢?
    评论

报告相同问题?

悬赏问题

  • ¥30 easy photo不能使用,求帮助
  • ¥15 c语言字符串单词入门问题报错
  • ¥30 我现在是双非人工智能专业不知道要不要转到软件工程专业
  • ¥15 请问12脉波整流机组的外特性曲线具体是如何推导
  • ¥15 abaqus里的python算法
  • ¥100 如何在思科模拟器中进入CEF模式
  • ¥15 Simulink 仿真如何使用MATLAB function模块获取到仿真过程中某一仿真时刻输入到模块的函数的值?
  • ¥50 关于#微信小程序#的问题:微信小程序支持h5实现webrtc h264 h265低延迟传输渲染,能付费帮我们解决一下吗
  • ¥20 请问ansys License manager 这个问题如何解决
  • ¥15 memory.limit()' is no longer supported