Website performance tuning links

Diagnosing Obamacare Website Performance Issues with APM Tools

Now – there are many different reasons why websites that need to scale for that many users don’t deliver on the promise of good end user experience. A general “cultural” problem is that performance and scalability are pushed towards the end in favor of more functionality resulting in problems that don’t allow the end user to consume these great features. Changing this culture with the support of tools that integrate in your continuous delivery process is mandatory to avoid these types of problems. We have blogged about this in the past based on discussions we had with companies that made that transitions.

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JEE related tutorials


JMX: Much More Than Just Application Monitoring 55min



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PJ Harvey – On Battleship Hill

Suzanne Vega

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– Apache OpenWebBeans

– Weld (


– Apache OpenJPA2

– EclipseLink (

JSF 2: (Tutorial:

– RichFaces

– Apache MyFaces (Apache CODI – MyFaces CDI extension)

– PrimeFaces

– IceFaces



Bean Validation:

– Apache BVAL

Seam 3




Javamelody ?

EHcache ( vs.





Getting Started With the Oracle Database Plugin for Eclipse

Object-Relational Mappings: Configuring the Persistence Provider for JPA Projects

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Install Oracle Instantclient on debian wheezy

Get the (latest) Oracle packages from the Oracle site:





apt-get install libaio1

alien -i oracle-instantclient11.2-basic- oracle-instantclient11.2-devel- oracle-instantclient11.2-jdbc- oracle-instantclient11.2-sqlplus-

apt-get install cmake cdbs qt4-qmake libqt4-dev libqscintilla2-dev

apt-get install postgresql-dev libmysqlclient-dev

echo "/usr/lib/oracle/11.2/client/lib" >> /etc/


mcedit /usr/share/cdbs/1/class/


concatenate its’ end the

-DORACLE_INCLUDES="/usr/include/oracle/11.2/client" -DORACLE_HOME="/usr/lib/oracle/11.2/client"


apt-get source tora

cd tora-2.1.3

./debian/rules binary

cd ..

dpkg -i tora_2.1.3-1_i386.deb

You need to setup the TNS_ADMIN environment variable.

setup of the environment variables:

if you previously installed the Oracle XE

copy the lines below into the ~/.bashrc







export PATH

export TNS_ADMIN


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Intelem kocsieladáshoz

Akkor élet iskolája 1. osztály:

1 lecke: Ha meghirdetem az autóm, mindig nálam 3 (igen három) példány szerződés adatok kitöltetlenül.

1/b ha ez nem felel meg a vevőnek, akkor egyeztetés-jogász, adásvétel csak később vagy kár soha.

2.lecke: Ha árulom az autóm előtte törzskönyv, forgalmi lefénymásolva két példányban

3. lecke Adásvételin az átadás átvétel időpontja (óra perc) feltüntetve

4.lecke Pénzt nem veszem át, hanem befizeti a bankszámlámra, így nem tud hamis pénzt adni. Szerződés aláírása a bankban.

4/b amennyiben sehogyan sem megoldható a bank (hétvége, ünnep stb) , Postára elmenés, ott kicsit morognak ugyan, de megnézik, hogy nem hamis e a lóvé.

5. Aláírt szerződéssel aznap, de legkésőbb az elkövetkező munkanap okmányirodába bemenés, harmadpéldány és a forgalmi, törzsköny másolat egyik példányának leadása (ha kérik).

5/b Szerződést átvetetni írásban ( a nálad maradó szerződéspéldányra ráíratni, hogy egy példányt átvettem

6. Szerződést, forgali, törzskönyv másolatot 10 évig megőriz

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Green Power :)

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Users tips, apps and FAQs for the new reader models

WACOM tollak:


PocketBook 60x/90x Firmware v2.0.4 (28.01.2011)

PocketBook Free


Tip & Tricks—Tricks—FAQ&coID=63&XTCsid=djdsgo1o6m453fbih2iqjgtknce303a0


Zip extract

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List of UML books

List of books to learn the UML notation for specifying software systems. When choosing a book it is important to check that the book covers the "new" UML 2.0 version.

Only the books I’ve personally read (or recommended by people I trust) are included in the list (yes! this means that if you want me to review your book you must hand me a copy :-D ). Follow the link below to search for additional books.

The Elements of UML(TM) 2.0 Style by Scott W. Ambler

(review by Andrea Baruffaldi creator of the UML Lovers group in LinkedIn)

The best thing about this book is that it does not simply introduce the UML notation. Instead, it focuses on providing a valuable set of guidelines to effectively use the UML (from layout guidelines to naming guidelines and to more general modeling advices coming from his own experience). Some of the suggestions may seem trivial to modeling experts but are definitely useful to all beginners. As an example, for activity diagrams, he defines the concepts of “Miracle activity” (activity that has activity edges out of it but none into it) and “Black Hole activity” (edges in but none out) and asks you to check if your diagram contains any instance of them, since then it is likely that you are missing something in the diagram

UML Distilled: A Brief Guide to the Standard Object Modeling Language by Martin Fowler

Clearly, the best-seller of the UML world. The best book for a soft introduction to UML, suitable even for complete novices to the software engineering community. Non-recommended for people looking for a more complete explanation of the language.

Applying UML and Patterns: An Introduction to Object-Oriented Analysis and Design and Iterative Development by Craig Larman

One of my favourite books and the one I recommend to teach UML in a first-level software engineering course. The book explain a software development process introducing and explaining at each step of the process the UML diagrams and constructs that are needed in that step. In this sense, it is really useful to see how we can combine the different UML modeling views in a coherent development process.

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Database Change Management

Database Change Management

You never develop code without version control, why do you develop your database without it?

Liquibase is an open source (Apache 2.0 Licensed), database-independent library for tracking, managing and applying database changes. It is built on a simple premise: All database changes are stored in a human readable yet trackable form and checked into source control.

Liquibase Supports:

  • Extensibility
  • Merging changes from multiple developers
  • Code branches
  • Multiple Databases
  • Managing production data as well as various test datasets
  • Cluster-safe database upgrades
  • Automated updates or generation of SQL scripts that can be approved and applied by a DBA
  • Update rollbacks
  • Database ”diff“s
  • Generating starting change logs from existing databases
  • Generating database change documentation

Getting Started

Download Liquibase and read the Quick-Start Guide.

For more information, you can read the homeFAQ, watch the training videos, and read 3rd party articles. If you have questions, visit the forums

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