Documents in MongoDB have a unique object ID when they are created. How can we get around this to develop a more effective REST API when document lookups are involved?
It's easy to use Venn diagrams to explain JOINs, but when you think about it, they're not quite the right tool to use. That's where JOIN diagrams come in.
How many times have you reviewed a log file without the data key (secret decoder ring) that explains what everything means. When a user more informative and intuitive format like JSON or XML? It's not too hard to do and can be quite helpful. Here's an example.
If we still use the get() functionality on optionals, we're effectively opening ourselves to the same problems as null checks. Here's how we should properly use this new tool in our arsenal.
Packaging is one of the underrated features of Java. IDEs are so smart that it only takes a few clicks to reorganize the whole project. But we can do better! We can really benefit from a good package structure.
Red Hat, Eclipse, and Eurotech have announced Eclipse Kapua — an end-to-end open source IOT cloud platform that combines and enhances several current solutions.
Sometimes tackling a problem in a single query isn't the best approach. We have a look at a scenario where a CASE statement is needed in a GROUP BY clause. What's the best way to handle this?
