Grzegorz Mirek

Grzegorz is a software developer from Cracow, Poland. He started his adventure with Java roughly 6 years ago when he was at university and since that time, he keeps expanding his knowledge in this field. He is especially interested in JVM performance and optimisations and this is what he mostly blogs about.

Core Java
Grzegorz MirekMarch 4th, 2019
3 52
Thread Local Allocation Buffers
Recently, I’ve been working on a Java application that suffered some serious performance issues. Among many problems, the one which…
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Enterprise Java
Grzegorz MirekJanuary 8th, 2019
0 457
The Right Flow For The Job: Which OAuth 2.0 Flow Should I Use?
What is What in OAuth 2.0 OAuth 2.0 is a well-adopted delegated authorization framework which is already with us for…
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Software Development
Grzegorz MirekSeptember 18th, 2018
0 111
Do You Really Know CORS?
Cross-Origin Resource Sharing No ‘Access-Control-Allow-Origin’ header is present on the requested resource. Origin http://www.sesamestreet.com is therefore not allowed access. If…
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Core Java
Grzegorz MirekMay 18th, 2018
1 53
Why debugging in production is so tempting?
Debugging in Production Why debugging in production is so tempting? In one of my first jobs, one of the tasks…
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Core Java
Grzegorz MirekMarch 27th, 2018
0 558
Understanding Java Buffer Pool
Understanding Java Buffer Pool The buffer pool space is located outside of the garbage collector-managed memory. It’s a way to…
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Core Java
Grzegorz MirekMarch 8th, 2018
0 51
Profiling in Production
Profiling in Production If you ever had some serious issues with a performance of your Java application, most probably you…
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Software Development
Grzegorz MirekDecember 19th, 2017
0 320
Ring Buffer – a Data Structure Behind Disruptor
Ring Buffer – a Data Structure Behind Disruptor Disruptor is a high-performance library for passing messages between threads, developed and…
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Core Java
Grzegorz MirekNovember 27th, 2017
0 50
A Tale of Two Iterators
When you look at the most popular Java interview questions, you might encounter the one about fail-fast and fail-safe iterators:…
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Core Java
Grzegorz MirekSeptember 18th, 2017
2 74
GC Explained: Algorithms
As described in the previous post, we have four different garbage collectors available in HotSpot JVM. There are some significant…
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Thank you!