Tagged with Jörg Hoh

Ways to access your content with JCR (part 1)

If you are a developer and need to work with databases, you often relay on the features your framework offers you to get your work done easily. Working directly with JDBC and SQL is not really comfortable, writing “SELECT something FROM table” with lots of constraints can be tedious … The SQL language offers only [...]

CQ coding patterns: Sling vs JCR (part 2)

In the last posting I showed the benefits of Sling regarding resource access over plain JCR. But not only in resource access both frameworks offer similar functionality, but also in the important area of listening to changes in the repository. So today I want to compare JCR observation to Sling eventing. JCR observation is a [...]

CQ5 coding patterns: Sling vs JCR (part 1)

CQ5 as a complex framework is built on top of various other frameworks, on the server-side the most notably ones are JCR (with its implementation Apache Jackrabbit) and Apache Sling. Both are very powerful frameworks, but both of them have some overlap in functionality: reading data from the repository (Sling Resources vs JCR nodes/properties) notification [...]

“Concurrent users” and performance tests

A few years ago when I was still working in application management of a large website we often had the case, that the system was reported to be slow. Whenever we looked into the system with our tooling we did not found anything useful, and we weren’t able to explain this slowness. We had logs [...]

Creating MBeans for your CQ5 application

JMX is the de-facto standard for monitoring java processes and applications. A lot of monitoring systems have the ability to consume these data. By default CQ 5.5 has a number of MBeans, which offer runtime information about internal state. Most interesting ones are the MBeans about the repository state and the replication MBeans. But it [...]

CQ 5.5: Changes to the startup

Since already a month CQ 5.5  is out. See here for the major changes brought with this release. Amongst the hundreds of new features I would like to point out a single one, which is probably the most intersting features for admins and operation people. With CQ 5.5 the quickstart does no longer start a [...]

CRX 2.3: snapshot backup

About a year ago I wrote an improved version of backup for CRX 2.1 and CRX 2.2. The approach is to reduce the amount of data which is considered by the online backup mechanism. With CRX 2.3 this apprach can still be used, but now an even better way is available. A feature of the [...]


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