How to make the two direct DBS update and write through the same cache?

Hello
Sorry for any fault of grammar since English is not my first language.
Our team is planning to migrate a project centered on the DB to the solution of database consistency. A problem that we face is that a large part of the business logic was implemented in DB stored procedures, which would take the time and effort to rewrite in the entity of consistency model. To for this transition process harmonious and progressive, is there a way to support the two BD update and write through on the same cache? In other words, I want that stored procedures will continue to manage the demand for legacy, after the update, update the web service (update) or (expel/get) the cache; While new logic of business on the same Entity (Cahce), I want to reach write-through. Is it achievable? Thank you!

Hello

So what you're really asking is a way to ensure that updates made directly to the DB of your existing system are pushed in cache coherence.

It is a common problem with a number of possible solutions according to your specific needs.

If you do not need data in cache, in other words, don't mind if it's a bit outdated, then you can use the expiry and refresh to come so that consistency will expire entries the cache and reading in that the DB to the need to hide.

If you need accurate data in the cache, it is when it changes on the DB you had to push as soon as possible in the cache, then you need another way. It depends probably the DB that you use and what functionality it provides to allow you to hang change tables.

The SIG London yesterday there was a presentation on the Oracle Golden Gate to do this kind of thing. I think that it is based on the use of the APP and of course an Oracle DB.

JK

Tags: Fusion Middleware

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