By user13333379 on Dec 22, 2009
Panthermedia is currently refactoring the entire application including the database and it's schema. Panthermedia needs some time to do this. Panthermedia decided to do a step by step mgration for all modules. They decided to follow an innovative approach:
- They created the new database tables in parallel to the existing ones
- The old tables got update triggers which maintain the correct state in the new tables for every "old" query going to the old tables
- The new tables got update triggers which maintain the correct state in the old tables. "New" queries use the new tables
- The application is now getting re factored in a step by step approach. More and more new components use the new tables
- Panthermedia is currently using MySQL 5.0.68 including master/master replication plus replication for backup purposes.
The current approach works like a charm. The questions is however if other members used this approach before. What are the up- and downsides?
Please let us know and start a discussion through the comment function!
Before I forget!:
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