Poison messages are basically delivery deadlocks caused
by a continuous redelivery of a message to a JMS Queue or Topic. That
usually happens due to a code bug or configuration problems in the
project.
How to reproduce poison messages
The easiest way of reproducing the poison messages issue
is to create a Message Driven Bean and then to throw an exception in its
onMessage
method, like the...
Rule of thumb: Avoid to use {variables} as the first path of a
Jersey's @Path
I am working on the Arena PUJ Project, a RESTful web-service to
support PUJ competitions. We are in the early stages of the project but
we already got some resources published on the web. Let me show you a
few URL samples:
An insecure GET method to read all competitions promoted by a
JUG:
GET /{competition_id}/...
I have just two arguments to avoid using long as type of the primary keys of JPA Entities:
Integers IDs allow tables with ~2 billion records. Yes, you read well: max(Integer) = 2,147,483,647
the JPA pagination methods only accepts Integers Query setFirstResult(int startPosition) an Query setMaxResults(int maxResult)
Summary:only adopt data types long for your...
I am working out a new pet project, an online system to support PUJ Competitions. It is still a work under progress and I plan to start to blog some technical results here, but until that glorious free time I would give you a glimpse about what is keeping my blog so quiet :)
So, PUJ is an academic competition where undergraduate student submit their homeworks for the evaluation of...
