List/Grid Tag Archives: Performance

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Five easy steps to improve your database performance

January 30, 2015: Based on reader feedback, section 4 “Do you have enough database connections?” has been revised. Database access is a core feature of most applications. Based ...
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How to detect and diagnose slow code in production

One of the more difficult tasks that a developer faces is finding and diagnosing slow running code in production. Firstly how do you monitor your production code without slowing it ...
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Top 10 Easy Performance Optimisations in Java

There has been a lot of hype about the buzzword “web scale“, and people are going through lengths of reorganising their application architecture to get their systems to “scale”. But ...
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Top 10 Most Common Java Performance Problems

Java performance is an issue of interest for all Java application developers, since making an application fast is as important as making it functional. Steven Haines uses his personal ...
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JMH: How to setup and run a JMH benchmark

Health Warning! This post describes how to setup and run a simple JMH benchmark.  Micro benchmarks are notoriously difficult to get right and even when you do get them right (by using ...
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Java8 Sorting – Performance Pitfall

Java 8 brings all the goodness of lambdas to enable us to program using a declarative style. But is it really free? And should we be concerned about the price we have to pay for the ...
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First rule of performance optimisation

Let’s start with a system with no obvious performance bottlenecks.  By that I mean that there are no glaring algorithmic problems which are grinding your system to a halt.  e.g. ...
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Java performance tuning survey results (part IV)

This is the last post in series where we analyze the results of the Java Performance Tuning Survey we conducted in October 2014. If you have not read the first posts, I recommend to ...
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Java performance tuning survey results (part III)

This is the third post in a series where we analyze the results of a survey conducted in October 2014. If you have not already done so, I recommend to start with the first two posts ...
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Java performance tuning survey results (part II)

This is a second post in series where we analyze the results of the performance tuning survey conducted in October 2014. If you have not read the first part yet, we recommend to start ...
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