News
Automated Refactoring at GeekOut
Wednesday, 21 March 2012 00:00

Patrycja Wegrzynowicz, CTO of Yonita, Inc., speaks at GeekOut (June 14-15, Tallinn, Estonia) about automated refactoring of performance and concurrency anti-patterns.

Conference GeekOut is a great possibility to meet the luminaries of the Java community right in Tallinn, Estonia. You can listen to great talks and network with your peers. GeekOut invites rock star speakers from all over the world to introduce you to the latest and greatest aspects of Java technology. And they make sure, as it was in 2011, that each and every talk focuses on technology and technology only.

Patrycja Wegrzynowicz presents several performance and concurrency anti-patterns along with a tool demo to automatically refactor them. We discuss performance anti-patterns related to slow data structures, inefficient data- and call-flows, and suboptimal critical sections. Then, we explain how such anti-patterns can be refactored to more appropriate structures applying the best strategy based on their usage patterns, yet guaranteeing the same semantic. During the demo we show how Yonita Optimizer improves an exemplary application. We also present the results of optimization for an open-source projects, including the before and after execution times along with the refactored code available to download.

Yonita Optimizer is a source-to-source pre-compile refactoring tool with a focus on performance optimization. It performs in-depth data- and call-flow analyses to infer about the behavior of a program (including usage patterns of its data structures) and further applies the optimal strategy to inefficient cases.

 
Performance Anti-Patterns at Codemotioon
Wednesday, 21 March 2012 00:00

Patrycja Wegrzynowicz, CTO of Yonita, Inc., speaks at Codemotion (March 23-24, Rome, Italy) about performance anti-patterns in hibernate.

Codemotion 2012 is the sixth event in the series. The first was held in 2006: Javaday number one. Year after year Codemotion has grown and evolved to become what it is now: it is not just about Java anymore, it is now also about other types of languages and technologies. Codemotion 2012 brings with it two big changes: a two day event and concurrent events in Rome and Madrid.

During Codemotion, Patrycja Wegrzynowicz, CTO of Yonita, Inc., will deliver a session titled Performance Anti-Patterns in Hibernate. Hibernate is an elegant, straightforward, and easy to use library. This is undeniably true for simple domain models. What about more complex ones? It turns out that in case of complex domain models we usually run into interesting performance issues. Patrycja's talk will discuss performance anti-patterns on both levels the code of hibernate itself as well as the usage of hibernate in custom applications.

Slides from presentation can be found here.

 

 
About JPA Performance at GeeCON
Friday, 16 March 2012 00:00

Patrycja Wegrzynowicz, CTO of Yonita Inc., discusses performance of various JPA providers  at the GeeCON conference (May 16-18, 2012 Poznan, Poland).

GeeCON is the biggest independent Java conference in Europe and the Middle East. The conference is a premier international venue for discussing Java-based technologies, dynamic languages, enterprise architectures, patterns, distributed computing, and much more.

Patrycja Wegrzynowicz, Vice-President and CTO of Yonita, Inc., compares, contrasts, and explains performance characteristics of four JPA providers (i.e., EclipseLink, Hibernate, DataNucleus, and OpenJPA), mainly focusing on mappings of complex structures (collections and sub-objects), JPQL, and caching.

 

 
Hibernate Puzzlers at 33rd Degree
Friday, 17 February 2012 00:00

Our CTO speaks at 33rd Degree conference (March 17-19, Cracow, Poland) about tricky cases in Hibernate, the most popular Java ORM library.

33rd Degree is a Java conference with rock star speakers and 3 days of extremely eminent talks on Java and beyond. Patrycja Wegrzynowicz, CTO of Yonita Inc. and Yon Consulting LLC, presents her further research about anti-patterns and bugs related to correctness and performance of database programming in the context of hibernate usage.

 
CTO at JDD

Patrycja Wegrzynowicz, CTO of Yonita, Inc., speaks at JDD (Nov. 21-22, Krakow, Poland) about performance anti-patterns in hibernate.

JDD conference is held every autumn in Kracow since 2006 and has already permanently entered the IT events calendar in Poland. Every year the conference gathers nearly 400 participants working every day with Java.

JDD is a two-day conference that offers more than 30 interesting lectures that take place in two or three paths. Additionally participants are invited to join special working sessions: workshops and networking sessions. Participation in training and discussions will be a part of the conference so that developers could easily exchange experience related to their daily work.

During JDD, Patrycja Wegrzynowicz, CTO of Yonita, Inc., will deliver a session titled Performance Anti-Patterns in Hibernate. Hibernate is an elegant, straightforward, and easy to use library. This is undeniably true for simple domain models. What about more complex ones? It turns out that in case of complex domain models we usually run into interesting performance issues. Patrycja's talk will discuss performance anti-patterns on both levels the code of hibernate itself as well as the usage of hibernate in custom applications.

 
Yonita, Inc. thanked by Auschwitz Museum
Wednesday, 23 November 2011 00:00

CEO of Yonita, Inc. thanked by the Director of Auschwitz-Birkenau State Museum

CEO and President of Yonita Inc., Dr. Andrzej Bartosiewicz has been thanked by the Director of the Auschwitz-Birkenau State Museum, Dr. Piotr Cywinski, for the commitment and successful actions that brought about the handing over of the domain "auschwitz.org" to the Museum.

Letter can be found here (in English) and here (in Polish).

In his letter to A.Bartosiewicz, Dr. Cywinski writes:

Dear Andrzej Bartosiewicz,

I wish to thank you personally for your great commitment and successful actions that brought about the handling over of the internet domain auschwitz.org to the Museum. It will allow us the transfer of the current website of the Auschwitz Museum and memorial to the new address.

These actions are done in accordance with the policy of the Polish Ministry of Culture and National Heritage. Its aim is to support the efforts of the Polish Government
directed against the erroneous associating of the concentration and extermination camps with Polish post-war locations of those places.

Your negotiation skills were a decisive element which got the desired result, even in a situation when the chances for success were to be estimated with great reserve. That is why I would like to express my seep gratitude and once again thank you for your commitment to this case, which lead to this highly satisfactory result.

Dr. Piotr M.A.Cywinski
Director

 

 

 
Performance Anti-Patterns at Devoxx
Friday, 02 September 2011 00:00

Patrycja Wegrzynowicz, CTO of Yonita, Inc., speaks at Devoxx (Nov. 14-18, Antwerp, Belgium) about performance anti-patterns in hibernate.

Devoxx is the most important and the largest conference about Java-related technologies in Europe. During this five-day long event, over 2000 attendees from all over the world will attend more than 100 sessions in such tracks as University, Tools in Actions, Labs, BOFs, and the main Conference event.

During the Devoxx Conference event, Patrycja Wegrzynowicz, CTO of Yonita, Inc., will deliver a session titled Performance Anti-Patterns in Hibernate. Hibernate is an elegant, straightforward, and easy to use library. This is undeniably true for simple domain models. What about more complex ones? It turns out that in case of complex domain models we usually run into interesting performance issues. Patrycja's talk will discuss performance anti-patterns on both levels the code of hibernate itself as well as the usage of hibernate in custom applications.

Slides from presentation can be found here.

 

 
Yonita presents at domain.forum
Thursday, 03 November 2011 00:00

Dr. Andrzej Bartosiewicz, President and CEO of Yonita Inc., speaks to over 100 delegates of the domain.forum held in Sofia, Bulgaria on November 7, 2011.

domain.forum is the first event in Bulgaria dedicated to the ICANN new gTLD program and related issues and aimed at domain registrars and Internet providers, organizations that plan a new gTLD application, IP lawyers, domain registrants and Internet users, as well as academic community.

Dr. Bartosiewicz's presentation entitled "Dealing with cybersecurity threats: role of Registrars" discusses business opportunities for Registries and Registrars related to cyber-security including implementation of the Security Scanner service provided by Yonita Inc.


More: Press Release

 
Ministry of the Polish Government consults with Yonita's CEO
Tuesday, 11 October 2011 00:00

MOUNTAIN VIEW, Calif., WARSAW, Poland (Oct 12, 2011): Director of the Information Society Department of the Ministry of Interior and Administration consults with CEO of Yonita, Inc.

Wlodzimierz Marcinski from Ministry of Interior and Administration of Poland, in his capacity of the Presidency of the Council of the European Union, consults with Dr. Andrzej Bartosiewicz. The area of consultation covers new contract between ICANN and the United States Government for performance of the IANA function and the role of the European Commission as the representative of the European countries in the Government Advisory Committee.

The Presidency of the Council of the European Union is the responsibility for the functioning of the Council of the European Union that rotates between the member states of the European Union (EU) every six months. The presidency is not a single president but rather the task is undertaken by a national government, which is currently government of Poland.

 
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