Originally posted by Lasse Koskela:
1) How to make sure that the box doesn't go out of RAM? There's really no way of calculating the memory usage of an application accurately, which might lead to problems.
Yes, we monitor the disk space, hotswap disks, move to tapes, etc., but I don't see those "tools" available for Prevayler, for example? Besides, we can buy server disk space with a lot less than server memory so there's room to "play it safe" with HDs.
Originally posted by Ilja Preuss:
How do you make sure that your database doesn't go out of disk space?
In fact, I worked on and off for 2 years around a system that had pretty much everything in memory after a bit of warm-up. I'm not sure how many gigabytes it took but I would guess approximately 1GB in each box. It still wasn't too fast (although the biggest contributor to the slowness was the somewhat bulky ecommerce engine we had to put up with)
Think how fast JavaRanch would be if it was all in memory!
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