Sharing data between two Web Apps
Hi,
I have got two web applications that share a MySQL database accessed by
Kodo JDO. I have tremendous difficulty to share the state that one web
application writes to the database with the second web application. The
data seems to stay in the cache of the first app and I have not found a
way to flush the data to the SQL database, so that the second can read it.
I do a refresh on the relevant object within the second app. The problem
seems to be flushing the cache of the first app.
Best regards
Wolfgang
PS: To Solarmetric: Thanks for this wonderfull technology. I am building a
complex database application, without having to learn SQL.
Hi Greg,
this:
properties.setProperty("kodo.DataCache", "false");
does not do the trick. There is no difference in behaviour. To use
kodo.RemoteCommitProvider I would need the performance pack at 900 bucks a
pop, which is not an option right now.
Best regards
Wolfgang
Greg Campbell wrote:
Hi Wolfgang,
Are you using Kodo's Datastore cache in both web apps? I suspect that what
is happening is that the data actually is being flushed to the database
appropriately (assuming that you commit your transactions), but that your
cache in your second app has stale data. Could you turn off the datastore
cache in both apps just test that hypothesis?
If your applications start to work as expected with the datacache off, then
you should check out (assuming you're using Kodo v. 3.1.3)
http://www.solarmetric.com/Software/Documentation/3.1.3/docs/ref_guide_event.html#ref_guide_event_conf
That section of doc describes how to get the datastore caches in the two
JVMs talking to each other.
Thanks,
Greg
"Wolfgang Kundrus" <[email protected]> wrote in message
news:ccli85$lae$[email protected]..
Hi,
I have got two web applications that share a MySQL database accessed by
Kodo JDO. I have tremendous difficulty to share the state that one web
application writes to the database with the second web application. The
data seems to stay in the cache of the first app and I have not found a
way to flush the data to the SQL database, so that the second can read it.
I do a refresh on the relevant object within the second app. The problem
seems to be flushing the cache of the first app.
Best regards
Wolfgang
PS: To Solarmetric: Thanks for this wonderfull technology. I am building a
complex database application, without having to learn SQL.
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