A Simple Plugin System for Web Applications
We need to make multiple web-based projects with a lot of shared functionality. For that, some sort of a plugin system would be a good option (as an alternative toContinue reading
Two Types of Deployment for Subsystems
During development you sometimes have a part of the system that is rarely changed, requires a lot of resources, has a lot of prerequisites to run, and/or takes a lotContinue reading
We Don’t Need That Documentation
“We must write more documentation”. Have you heard that? I have, many times in many companies. Most people feel guilty for not writing documentation and agree. I don’t. There areContinue reading
Templating For Java Web Applications
A while ago I asked the following question on stackoverflow: “Why would I use a template engine?”. I compared template engines to simple JSP includes. Although I didn’t particularly fancyContinue reading
Login Tokens In Email Links
Your system is probably sending some emails. Sometimes these emails contain links to the public part of the site, sometimes they have links to the authentication-protected part. Either way, ifContinue reading
Augmenting 3rd-Party Libraries
For every project I’ve participated in, there has been a need for augmenting some third-party library. A couple of reasons: there’s a bug there’s missing functionality there’s functionality that doesn’tContinue reading
How To Accept Bitcoin Payments
Bitcoin is gaining popularity, and last week I decided to implement it as a payment option for my computer-generated music service. Why I decided to do that is detailed hereContinue reading
Database Migrations And Java
There’s a trivial problem that every project has – keeping the database structure in sync with the application. That is, when your code relies on a new table or column,Continue reading
Caveats With MySQL Pagination
We’ve all done pagination – it’s sensible for both lists in the UI and for processing data in batches. “SELECT (columns) FROM table LIMIT X, Y”. Possibly “SELECT (columns) FROMContinue reading
Be Careful With Cache Managers
If you are using spring and JPA, it is very likely that you utilize ehcache (or another cache provider). And you do that in two separate scenarios: JPA 2nd levelContinue reading