The Power and Perils of Parallel Streams


“If streams can be parallel, why not make them parallel all the time?” is a common question from developers getting introduced to Java 8 streams. In this talk we’ll take on three separate topics.

1. When to consider parallelization and when not to.

2. How to parallelize, how to decide on number of threads, and how to control the threads pool.

3. Learn about some common mistakes people make when using parallel streams.

The goal of this talk is for us to learn when and how to make good use of parallel streams.

Speaker: Venkat Subramaniam

Dr. Venkat Subramaniam is an award-winning author, founder of Agile Developer, Inc., creator of, and an instructional professor at the University of Houston.He has trained and mentored thousands of software developers in the US, Canada, Europe, and Asia, and is a regularly-invited speaker at several international conferences. Venkat helps his clients effectively apply and succeed with sustainable agile practices on their software projects.

Venkat is a (co)author of multiple technical books, including the 2007 Jolt Productivity award winning book Practices of an Agile Developer. You can find a list of his books at You can reach him by email at or on twitter at @venkat_s.