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JavaOne 2012: Thinking Through Java Enterprise Performance (BOF 4712)

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7 months ago
by Lucas Jellema in , , , ,

Performance of Enterprise Java Applications is a requirement and usually a challenge. Business requirements on systems can be stiff, successful systems can easily be overloaded and complex application architectures can add a burden too. Improving performance by tuning the application after it has been built seldomly renders huge improvements. By taking a step back – or even two – and regarding the application and the performance from a distance, it becomes possible to really design and architect for performance according to the ISYITF-method: it is staring you in the face. Order of magnitude improvements are attainable through logical reasoning and careful application of multi-tier architecture principles and JEE platform facilities.

This is the abstract for the session Thinking Through Java Enterprise Performance that I will be presenting on Tuesday October 2nd at JavaOne 2012 (BOF 4712 4:30 PM – 5:15 PM – Parc 55 – Cyril Magnin I.

The Outline

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The Future of Forms – 15th of May – Nieuwegein, The Netherlands

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1 year ago
by Lucas Jellema in , , , ,

Sporting a selection of the world’s best known speakers in the area of Oracle Forms and Forms modernization – on Tuesday 15th May AMIS will host an all day event around Forms, aimed at application architects and lead developers. During this event, we will discuss and demonstrate the most relevant options for moving Forms applications (and Forms developers) to the future. Registration for this event is free – the capacity is limited. See this link for the full program, the abstracts for all the presentations and the biographies of the speakers: http://www.amis.nl/theme/amis/uploadedFiles/PDF/Future%20of%20Forms%20EN%20DAG.pdf.

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SIG Event

Data Integriteit anno 2011 – Hands-on met Toon Koppelaars en RuleGen 3.0 bij AMIS op dinsdag 27 september

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1 year ago
by Lucas Jellema in , , , ,

datum: dinsdag 27 september; 16.30 uur

locatie: AMIS, Edisonbaan 15, Nieuwegein

sprekers: Toon Koppelaars en Lucas Jellema

Het belang van data integriteit behoeft geen toelichting – als het goed is. Vrijwel iedere enterprise applicatie is gebouwd op het fundament van een database. Robuustheid van die database en absolute betrouwbaarheid van de gegevens daarin zijn. essentieel. Het garanderen van die integriteit en robuustheid is lang niet altijd goed geregeld – en is ook geen triviale uitdaging.

De veelheid van toegangskanalen tot de database – batch jobs, web services, web applicaties in Java en .NET, PL/SQL modules en natuurlijk TOAD voor de applicatie beheerder – maakt wel duidelijk dat de integriteitsregels voor de data ofwel de business rules niet in de applicaties of in een service bus (alleen) kunnen worden geïmplementeerd. Integriteit in moderne applicatie-landschappen kan alleen worden gegarandeerd met implementatie van de business rules in de database zelf.

De Oracle database biedt naast de integrity constraints voor primary, unique en foreign keys weliswaar een veelheid aan mechanismen en constructies maar geen concrete, eenduidige, robuuste en More >

SIG Event

Agile software development, the principles. Principle 11: The best architectures, requirements, and designs emerge from self-organizing teams.

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3 years ago
by Robbrecht van Amerongen in , , , , , , , ,
This is the eleventh of 12 posts about the principles of agile software development. Purpose is to go back to the start of the agile manifesto (http://agilemanifesto.org/principles.html) and discuss the implementation of the 12 principles in real life software engineering. Goals of agility are to go deliver software of higher quality, faster, with a higher acceptance to end-users and able to follow the changing business requirements to strive for competitive advantage.   The question is: is this going to work in practice or is this only based on a nice marketing and sales story.   Principle 11: The best architectures, requirements, and designs emerge from self-organizing teams.   For a long time the engineering expertise (and also software engineering) was based upon the condition that you worked with specialists. These specialists emerged from the principle of division of labour and made it possible for these specialists to focus their attention on their specialism and create the best solution within their field of expertise. The Interaction designer designed a user interface, the architect created a global systems model, developers created code and More >
SIG Event

Agile software development, the principles. Principle 9 : Continuous attention to technical excellence and good design enhances agility

4 years ago
by Robbrecht van Amerongen in , , , , ,

This is the ninth of 12 posts about the principles of agile software development. Purpose is to go back to the start of the agile manifesto (http://agilemanifesto.org/principles.html) and discuss the implementation of the 12 principles in real life software engineering. Goals of agility are to go deliver software of higher quality, faster, with a higher acceptance to end-users and able to follow the changing business requirements to strive for competitive advantage.

The question is: is this going to work in practice or is this only based on a nice marketing and sales story.

Principle 9: Continuous attention to technical excellence and good design enhances agility.

The first time I looked at this principle I thought: “How is this possible”. Agility focuses on quickly delivering working software (reading: “Quick and dirty”). I experienced this is not true. Attention to technical excellence is making the agile process working better. Technical excellence can make the development process more flexible. In this context I would like to point out that there is a difference between technical excellence / good design compared to complex design and technical complexity. How many More >

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