Would like to have your advices on use of cache.

Any precautions should be taken..

I got a problem on JMS with php cache turned on.

I cannot replicate the problem because the JMS system crashed already after I cleaned and stopped the cache during my troubleshooting to some problems which I think maybe related to the php cache.

JMS Behaviour after clearing and stopping the php cache

1. all administration back end remains normal

2. The master JMS and two slave sites' front cannot be connected again, the links just returns blank pages.

3. One slave siite front end still remains normal.

I'm now working on installing a brand new JMS again without php cache.

But use of cache is important for us to increase the speed.

May you provide any advices on use of php cahce?

Many thanks.

In JMS, instead of using a Symbolic Links to redirect to the master website directory, we have prefered create a real cache directory for each slave site to avoid potential data conflict between the cache of the different website..
I don't see what could cause the problem you report.
If you arrive to reproduce it and identify the conditions for which it occurs, report it again with those additional details.

I'm working on that.

For your information, before it crashed, I notice there is some overlapping between the front ends of Master and Slave sites. But this problem stopped after I turned on the SEF on Slave....

I also saw some configuration problem in slave site. I mean after I changed the setting of a slave site, it did not reflect the changes...

So I guess there may be some problem on the Cache...

So I decide to stop and clear the cache ...then I crashed.....

Now, I start it all over again...to see what would happen...

If I get anything, I will tell you..