A Gioorgi.com abbiamo una sezione di ricerca e sviluppo, dove abbiamo la necessità di provare diversi tipi di ambienti in situazioni live: prova e ti riprova, abbiamo consolidato una certa esperienza in soluzioni Java Enterprise a “consumo ridotto”.

In questa serie di articoli (di cui state leggendo la seconda puntata) vediamo come ottenere un’ambiente Java leggero, LAMP-like che gira in una manciata di Megabytes…

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Introduzione

Quando Java nacque nel 1995, aveva parecchie frecce al suo arco, ma anche molta incertezza. Ricordo che in università fu accolto con favore dall’ambiente accademico, per le sue spiccate doti didattiche.

Java era più semplice da insegnare del C++, e aveva una libreria di base molto ben organizzata. Era già previsto l’uso della proto-annotazione “@deprecated” perché Sun sapeva che avrebbe dovuto far evolvere l’API, e questo evidenziava la cura e l’attenzione per l’organizzazione del lavoro del project management. Ai tempi Sun puntava sulle Java Applet e sugli aspetti di sicurezza, in cui Java eccelleva. Benché la vocazione di Sun fosse enterprise, ancora le specifiche EJB erano al di là da venire.

L’osservazione dei miei colleghi più scafati, che usavano PHP e Perl er ache Java era troppo pesante (in termini di memoria consumata) e lento (essendo interpretato) per i piccoli microcomputer da 12Mb che affollavano le nostre case.

Nel 2009, quattordici anni dopo, le cose sono cambiate e ora anche i pc di casa hanno sistemi a due processori e 4GB di RAM. Java è ancora lento e pesante ?

Vediamo come sviluppare applicazioni leggere e compatte in Java…

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Tired of prepared statement written down on the code?

Tired of Hibernate, and willing to come back to crude SQL debugging?

No problem, dudes!

We tried Elvyx, a  JDBC probe, without a full success. Our quality vote is 5, because of the following bad aspects:

• Very poor documentation. It is unclear if timings are returned in milliseconds or in seconds: no word about it!
• Returned value are often inconsistent, so we cannot use it very well.

Anyway, for a "quality oriented" sampling of data, for finding out most used calls and so on, Elvyx can help a bit.

From the website:

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Versign is experimenting a new Phone software to gain maximum security.

The software will be able to generate a unique to use to log in your accounts, in a similar way a RSA Key does.

What’s the Password? Only Your iPhone Knows - Bits Blog - NYTimes.com.

Slashdot reported an interactive map of the Linux  kernel:

Interactive map of Linux kernel.

Slashdot comments here

Happy Friday Hacking!

After my past experience with bad hosting provider, I am happy to say I have find a very good hosting service. If you need VPS hosting, Rimuhosting is a very good choice.

After about two years with Rimuhosting, I can summarize their feature here:

• They have a very good  entry-price for a virtual hosting
• System aministrator has a very prompt response: on every issue I get support in 24 hours, also on Sunday
• Rimuhosting uses a Xen virtualization mechanism which is very effective. I have tried other virtualized solution, which are worst.
• Java hosting works well, without problems.
• The default Bandwith is very huge (30GB). There is also  an automatic backup and a remote web-based shell out-of-the-box.
• You can choose between high-end Linux distribution  (like Red Hat enterprise) and free one.

Hi Sunday!  How are you deare reader? If you are up at 7 o’clock (the publish date of this post), you are probably a very hard rock internet-surfer. And the strong surfer are IT Geeks often.

So we want to give you a small link: a collection of very userful and nice wordpress plugins which should work also for WordPress 2.7. This set is nice because they are small, neat and easy to use, and well organized.

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This post will not show on frontpage.

Take a look to the stealth publish plugin

As you know, U.S.A. is having a very bad time, the resulting effect is a “big credit crunch”. For this reason big company operating in the IT are cutting down their minor services. Google is famous for having pushed a lot of “beta” services, and now the company is reviewing its decisions. Orkut (the Facebook-clone until Facebook acquisition…) is one of the service facing a lack of interest by BigG. We can read below the story of a guy who had its credential stolen by a set of smart hackers:

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Quello che segue è humor! Siete Stati avvertiti!

L’ Extensible Stylesheet Language Transformations (XSLT) è una tecnologia di trasformazione, la cui idea alla base è quella di far pigiare tanti tasti per ottenere un risultato misero e banale.

Sparare contro XSLT è così facile, che la tecnologia può essere rubricata tra le “pezzent ideas of IT”: vediamo perché.

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The 4.x way is to use JDK (>=5) annotation, but if you for some reason have to use the JDK 1.4 you have two solutions. The one I prefer is to use junit 3.8.x but if you cannot tolerate the missing of JUnit 4.x in the attached PDF you’ll find the standard 4.x way (with annotation) and a workaround for using the old JUnit TestSuite syntax.

by /home/edivad.

At Gioorgi.com we do not see the point of using Annotations, anyway, this is JDK 5 babies. So, thank you edivad for your help on finding a way to run junit3 tests on junit4!

looking  at Object Arts | Exciting News for Dolphin Users we read:

Object Arts announces a collaboration with Lesser Software to produce the next generation of Dolphin Smalltalk.

We hope Dolphin Smalltalk will not die: we have that fear  in September 2007 reading a press release called "A Brighter Future for Dolphin?".

ObjectsArts was asking money to get Dolphin open source. A rather bad move, in our own opinion, and in fact no thing happen. Now it seems Doplphin will be included in a bigger project. Good luck, big fish!

At Gioorgi.com we have no time. So we was very happy to find out a blogging platform which can be configured, tuned and rolled out in short time. If you are watching for such thing, you are welcome. Let’start!

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NB: Questo è la storia super rapida dei database relazionali, e non è ancora completata. L’idea è di confrontare la storia del modello E-R con quello dello sviluppo OOP, evidenziando simmetrie e differenze

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