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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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Need micro caching? Memoization to the rescue

Caching solves wide sort of performance problems. There are many ways to integrate caching into our applications. For example when we use Spring there is easy to use @Cacheable support. ...
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Some Sentences about Java

There is nothing new in this article. I just collected some trivial statements which may not be trivial for some of the junior programmers programmers. Boring old stuff. If you happen ...
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Unit Testing exercise with FizzBuzz and Mockito

I sometimes use FizzBuzz to demonstrate the basics of unit testing to newbies. Although FizzBuzz is really simple problem, it can also be used to demonstrate more advanced unit testing ...
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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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ExecutorService – 10 tips and tricks

ExecutorService abstraction has been around since Java 5. We are talking about 2004 here. Just a quick reminder: both Java 5 and 6 are no longer supported, Java 7 won’t be in ...
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First Java 8 Experience

Like the rest of the world, I fell deeply in love with Slack. Why? Lot of reasons, but the main one is it provides a new means of really building the SDLC process around communication ...
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It’s All About Tests – Part 2

This is the second post of the series about testing. In the first part I explained about the mindset we need to have while developing with tests. Or, in better words, developing for ...
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A beginner’s guide to Java time zone handling

Basic time notions Most web applications have to support different time-zones and properly handling time-zones is no way easy. To make matters worse, you have to make sure that timestamps ...
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But that’s impossible, or finding out that the JIT has broken your code.

Every now and then you look at some code and think that it cannot be possibly be wrong. Once you have ruled out a simple programmer screw up / enemy action in code (Make sure you read ...
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