Throughput and latency: performance tuning made simple

Many of our previous topics have measured the behaviour of certain systems in terms of either latency or throughput. As…

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G1 vs CMS vs Parallel GC

This post is following up the experiment we ran exactly a year ago comparing the performance of different GC algorithms…

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What Garbage Collector are you using?

Our research labs are humming at full speed. With the recent injection of capital, we can only warrant that the…

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Would you dare to change HashMap implementation?

There are bold engineers working for the Oracle nowadays. I came to this conclusion when trying to nail down a…

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How is ThreadLocal implemented?

This is a follow-up to my last week post, where I explained the motivation behind ThreadLocal usage. From the post…

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Running out of memory without the OutOfMemoryError

This is actually a reincarnation of a post originally posted in ~2010. The flashback occurred when listening to our engineers…

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When and how to use a ThreadLocal

As our readers might already have guessed, I deal with memory leaks on a daily basis. A particular type of…

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How to use Asynchronous Servlets to improve performance

This post is going to describe a performance optimization technique applicable to a common problem related to modern webapps. Applications…

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Six Java features to stay away from

I have spent countless hours troubleshooting different applications. Via the experience I can draw a conclusion about several Java SE…

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