List/Grid Tag Archives: Performance

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Java Sequential IO Performance

Many applications record a series of events to file-based storage for later use. This can be anything from logging and auditing, through to keeping a transaction redo log in an event sourced design or its c ...
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Applying Back Pressure When Overloaded

How should a system respond when under sustained load? Should it keep accepting requests until its response times follow the deadly hockey stick, followed by a crash? All too often this is what happens unless a system is design ...
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Native C/C++ Like Performance For Java Object Serialization

Do you ever wish you could turn a Java object into a stream of bytes as fast as it can be done in a native language like C++? If you use standard Java Serialization you could be disappointed with the performance. Java Serializat ...
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Android Performance Tweaking: ParseArray Versus Hashmap

One of the more recent Android ADT updates added Android Lint. Lint will check your Android project for simples things that you can change to improve your app. Lint notifies you about things like:Unused resources Simple code ch ...
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Introduction to BTrace for Java applications

The aim of this article is to learn how to dynamically trace/observe running Java applications (JDK 6+) using BTrace without changing the code and configuration params of the applications. What is BTrace? BTrace is an open source ...
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HOWTO: Increase performance in your application

If there’s one thing that developers hate it’s seeing your piece of code becoming a performance hog. That piece of code that does it’s job beautifully, comes crashing down when there’s a load test. That definitely does ma ...
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Java High CPU troubleshooting guide – part 1

This article is part 1 of a series that will provide you with a comprehensive guide on how you can troubleshoot and identify root cause of Java high CPU problems. This guide is also applicable for standalone Java programs but de ...
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MongoDB performance testing

So, this morning I was hacking around in the mongo shell. I had come up with three different ways to aggregate the data I wanted, but wasn’t sure about which one I should subsequently port to code to use within my applicatio ...
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Application Performance and Antipatterns

Any application you pick up, there are some issues – big or small. There will be copy-paste code, mistakes, algorithms which could have better thought through. But what distinguishes an antipattern from these normal errors is th ...
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High Performance Webapps – Data URIs

I continue to write tips for perfomance optimization of websites. The last post was about jQuery objects. This post is about data URIs. Data URIs are an interesting concept on the Web. Read ” Data URIs explained” plea ...
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