About Petri Kainulainen

Petri is passionate about software development and continuous improvement. He is specialized in software development with the Spring Framework and is the author of Spring Data book.

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We Need More Foremen

This week I read a blog post titled Where is the Foreman by Robert “Uncle Bob” Martin. It made me think. Uncle Bob suggests that a software development team should have a foreman ...
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Two Reasons Why Estimates Aren’t Worth It

When potential customers contact us, the odds are that they want to know two things:How much does it cost to implement the application? How long it will take to implement the application?The ...
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Two Ways to Get the Most Out of Daily Stand-up Meetings

A daily stand-up meeting is an essential part of agile software development. It is a meeting which takes place at the same place and time every working day. The agenda of this meeting ...
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Three Reasons Why I Like the Builder Pattern

There are three ways to create new objects in Java programming language:The telescoping constructor (anti)pattern The Javabeans pattern The builder patternI prefer the builder pattern ...
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Three Reasons Why Human Skills Are Important for Software Developers

It is easy to think that being a good software developer requires only technical skills. After all, software developers spend a majority of their time designing software and writing ...
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Using jOOQ with Spring: Code Generation

As we might remember from the first part of this tutorial, jOOQ states that jOOQ generates Java code from your database and lets you build typesafe SQL queries through its fluent API. The ...
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FindBugs Maven Plugin Tutorial

FindBugs is a static code analysis tool which identifies problems found from Java code. We can integrate FindBugs into our build process by using the FindBugs Maven plugin. This blog ...
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Spring from the Trenches: Invoking a Secured Method from a Scheduled Job

Let’s assume that we have implemented a Spring powered application, and secured it by using the method security expressions of Spring Security. Our next task is to implement a scheduled ...
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Using jOOQ with Spring: Configuration

I have had my share of performance problems caused by ORMs. Although I have to admit that most of these problems were really caused by yours truly, I have started to think that using ...
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From Idea to Code: The Lifecycle of Agile Specifications

We have just started a new project to a customer who sells widgets. This customer is the leading widget provider of the whole world so the project can either make or break us. The project ...
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