List/Grid Tag Archives: Performance

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Dealing With Slow Resource Leaks

Finding resource leaks using Java-monitor Finding slow resource leaks is key to keeping your application servers up and running for very long times. Here I explain how I use Java-monitor ...
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Optimizing Java Serialization – Java vs XML vs JSON vs Kryo vs POF

Perhaps I’m naive, but I always thought Java serialization must surely be the fastest and most efficient way to serialize Java objects into binary form. After all, Java is on ...
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Batch Writing, and Dynamic vs Parametrized SQL, how well does your database perform?

One of the most effective database optimizations is batch writing. Batch writing is supported by most modern databases and part of the JDBC standard and is supported by most JPA providers. Normal ...
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Java 7 vs Groovy 2.1 Performance Comparison

I haven’t used Groovy for 2 years, since my last touch with Grails. I get stuck in (hard)core Enterprise Java, with some performance aspects in background. I’ve almost missed ...
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Performance tests for slow networks with tc

tl;dr: you can easily replicate slow network conditions which makes it easier to performance test them. Smartphones have made both mobile websites and apps that have to connect in mobile ...
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ArrayList Using Memory Mapped File

Introduction In-Memory computing is picking up due to affordable hardware, most of the data is kept in RAM to meet latency and throughput goal, but keeping data in RAM create Garbage ...
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C++ like Java for low latency

Overview Previously I wrote an article on C like Java.  This is term I had come across before. However, on reflection I thought C++ like Java is a better term as you still use OOP ...
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Reducing memory consumption by 20x

This is going to be another story sharing our recent experience with memory-related problems. The case is extracted from a recent customer support case, where we faced a badly behaving ...
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JVM Performance Magic Tricks

HotSpot, the JVM we all know and love, is the brain in which our Java and Scala juices flow. Over the years, it’s been improved and tweaked by more than a handful of engineers, and ...
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Improve Performance by caching and compression

Web page designs are becoming innovative with rich interface which involve extra code such as java scripts, css, and images etc. Most of the end-user response time tied-up in downloading ...
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