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Category Archives: Performance

The best 59$, a java developer can ever invest

Wednesday, June 17, 2009

If you don’t buy this now, you’re either dumb. Or just plainly stupid. For the impatient: it’s a small jar that lets you compile/run/deploy java instantly, like php. I’ts the real HOT DEPLOY that jvm lacks out of the box. No more restarting the server, ever again, even after reconfiguring Spring beans. I used this [...]

Also filed in Core Java | | Comments (3)

DBCP vs C3P0

Friday, April 25, 2008

I didn’t know there was a great debate going on between DBCP and C3P0 about 6 months ago going on. My new project is using C3P0 for connection pooling with JNDI-bindable datasources and I find it really annoying to have it configured that way in development. Anyway C3P0 is a project that’s new to me, [...]

Also filed in Database | | Comments (0)

The size of an object instance at runtime – pre Java 1.5

Tuesday, November 13, 2007

In Java 1.5, Sun provides us with a miracle method that is long overdue: long java.lang.instrument.Instrumentation.getObjectSize (Object objectToSize) However, this is still limited in that it only returns the total size of the Object, not the details about the Object size in regard to its composition. Enter monq.jar from Whatizit. There’s a Sizeof class in [...]

Also filed in Core Java | | Comments (2)