Java Batch Optimization

A major shipping monopoly in North America ported their Mainframe batch (25+) jobs to Java platform. This porting was done by one of the top 3 consulting companies of India. Because of the world-class architecture, selection of frameworks and code written by them, Jobs took 16:04 hours to complete. Batch jobs that were started at 6:00pm PST completed around 10:00am PST next day. Due to which business was suffering from couple of complications:

1. China operations who comes online during pacific night time, got hurt because batch jobs were still running.

2. Since Batch jobs are running till next day 10:00am, their next day US online transactions were also getting hurt.

As management started to feel the heat, they engaged me to help them out. As the famous saying goes: “If Technology goes beyond a point, it would start to appear like magic”. Such magic was performed.


Without causing any production defects, without making major intrusive changes to the application within *2 months* I was able to bring down the overall run time from 16:04 hours to 3:14 hours, which is 79.8% reduction. Stated in other words, before the optimization – you will have to wait till next day’s break-fast time to see the batch complete. After the optimization, on the same day’s dinner time you can see the batch to complete.

During this 2 months period new functional requirements were added to the batch jobs (because of their new business acquisition) and their traffic volume grew by 20%. Despite those hurdles this miracle was achieved.

If your application is also suffering from the midas touch of such Godly consulting companies, please don’t hesitate to reach me.

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