Octopress, jekyll technologies

Octopress has generation of per tag index. By default it shows only post title. This works okay, until the moment when you will want to customize category_index.html and try to output some excerpt of post content too. You will face the issue that post content renders incorrectly. This is a problem in plugins/category_generator.rb plugin.

Git technologies

To create remote Git branch in IntelliJ idea one should:

Grails, jackson, json technologies

Optimizing Web application request processing time is an important stage of quality product development. While doing this part of the work on one of our products we noticed that the huge bottleneck was buried inside built-in JSON support in Grails. The problem was that built-in JSON parser that comes with Grails is surprisingly slow. Thats why we considered switching to using Java-based JSON parser instead.

Java, nosql, persistent queue technologies

Recently I had a task to develop the application which will have large work queue and which need to survive the restarts. The application need to be lightweight. After trying several different persistent engines for Java I''ve chosen to stick with Berkley DB Java edition. This persistent engine is pretty lightweight it is fast, optimized for multi-threaded usage and have no problems with reclaiming free space.

As I needed the fast persistent queue at a cost of possible data loss on system crash I've chosen non-transactional API for Berkley DB. With non-transactional API the great speed can be achieved for persistent queue at a price of loss of some data at system crash. The more data you allow to be lost the greater speed of the queue you will have. Though you can opt to sync to disk each operation on the queue and in that case your data loss will be minimal.

Grails, mongodb technologies

There is some twist to use more specific data storage engines than RDBMS. The mongodb is a modern feature-rich non-RDBMS database. It can be used with grails quite well, though some special care should be taken. In this post we will create base secure grails application powered by mongodb.