During a recent period of high traffic level on our site, we found we had several threads blocked on a particular component. We found that the component contained a synchronized block of code, which means only one request can be…
Month: June 2013
Inserting full objects into a database column
I have never seen the need for this, but I like to understand things in case I ever run across them “in the wild”. I did see it in a commercial ecommerce application in which the designers serialized an “Order”…
Cloudera Impala simple command line test
I am a big believer in simple command line examples. Connecting the dots is so much easier when you do this. There will be much more on this, but this should get you started. CLASSPATH is shown below. The absolute…