Joget DX Preview Release Available for Download

Check out Joget DX, the next generation successor to Joget Workflow for faster, simpler digital transformation.

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Identify Performance Bottlenecks

The saying from renowned computer scientist Donald Knuth goes:

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Once you have identified where the potential problems are, you can then start to look into optimizing each of the areas, described in the following sections.

 

Ensure Sufficient Java VM Memory Allocation

The platform runs on the Java VM (JVM), and depending on the size and complexity of your apps and usage, you might need to tune the JVM heap memory size to suit your environment. If the setting is too low, the system will run out of memory resulting in OutOfMemory errors. However if the setting is too high compared the amount of physical RAM available, there might be quite a lot of swapping, in addition to overheads in garbage collection.

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Some additional details are available at Deployment Best Practices#JavaVMConfiguration.


 

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Eliminate Resource Leakage (Memory, Database Connections, Files, Network, etc)

At the platform level, Joget Workflow has been optimized and tested to ensure that there are no resource leakages.

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The database connection usage can be monitored in your database server, or use the v6 Database Connection Monitoring and Leak Detection feature.


 

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Optimize your App and Database Queries

Joget Workflow has been thoroughly profiled and optimized to ensure that there is minimal overhead at the platform level. However, in enterprise apps that rely on dynamic data, each page request would require many database queries. Database calls are slow not just in query execution, but especially in network I/O. In most cases, database calls are the main performance bottlenecks that cause lengthy page response times and limit scalability.

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In the upcoming v6, there will be a new Userview Caching feature to optionally cache userview pages and menus for a significant performance boost.


 

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Tune the Database and Application Server


You should optimize custom SQL queries that are used in your app, as slow queries are very common bottlenecks. In MySQL for example, you can use the  EXPLAIN command  to help you determine the execution plan of your queries, and find ways to optimize them.

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If you use a lot of form grids with parent and child database tables, do add indexes to your foreign key child table. This will speed up retrieval of the child form records.

 

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Load Test your App and Server Sizing

There are many factors involved in determining the server specifications needed to run Joget Workflow effectively. These are some of the non-conclusive factors:

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To determine the actual requirement for your app and usage, it is best to perform load testing in your environment. There are many free and commercial load testing available, there is an article using the open source Apache JMeter tool at Joget Workflow Clustering and Performance Testing on Amazon Web Services (AWS)


 

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Introduce Clustering and Load Balancing

When you have optimized your apps, you can increase your server capacity as appropriate to handle increasing load (vertical scaling). You can also start to consider performing horizontal scaling i.e. to cluster or load balance your installation. This can not only handle increased load, but also offer high availability. Read more on this at Deployment Best Practices#ClusteringandLoadBalancing.

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