Few questions on FileCacheLoader

jaikiran Apr 19, 2006 7:38 AM

A few questions regarding FileCacheLoader:

- Does the location to which the FileCacheLoader stores, need to be cleaned out on every application restart?

- What happens if the drive is full. Is this taken care of? Looking into the code of FileCacheLoader, i believe IOException may occur on disk being full, right?

- Can FileCacheLoader be used in a production environment?

P.S. The reason behind using FileCacheLoader along with maintaining a eviction policy, is to avoid additional database queries that would be fired in case the object was evicted from cache because of over-capacity(number of nodes exceeding maxNodes).

1. Re: Few questions on FileCacheLoader

manik Apr 19, 2006 9:27 AM (in response to jaikiran)

"jaikiran" wrote:

- Does the location to which the FileCacheLoader stores, need to be cleaned out on every application restart?

Nope. If you do this you won't be persisting anything!

"jaikiran" wrote:

- What happens if the drive is full. Is this taken care of? Looking into the code of FileCacheLoader, i believe IOException may occur on disk being full, right?

Yes

"jaikiran" wrote:

- Can FileCacheLoader be used in a production environment?

I wouldn't recommend it! :-) File systems are inherently bad at dealing with concurrency and transactional integrity. I'd recommend BDBJE.
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2. Re: Few questions on FileCacheLoader

jaikiran Apr 19, 2006 5:31 PM (in response to jaikiran)

Thanks Manik for those answers.

-Jaikiran
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