Χρόνια : Hadoop streaming is a powerful utility which comes with Hadoop distribution.The basic concept of Hadoop framework is to split the job,process it in parallel and then join it back to get the end result.So there are two main…
Τι είναι το Map / Μείωση σε Hadoop?
Χρόνια : Processing vast amount of data (multi-terabyte data-sets) is a major concern in real life projects.As the size of data is increasing day by day, applications are finding it difficult to process it in a reliable,secured and fault-tolerant way.…
Πώς να αυξήσετε την απόδοση της δοκιμής JMeter?
Ένα: Μετά ορισμένες τεχνικές που μπορούν να εφαρμοστούν για την αύξηση της απόδοσης μιας δοκιμής JMeter. 1) Μειώστε τον αριθμό των ταυτόχρονων θέματα :The hardware and server capability limits the number of threads which can run effectively with JMeter.If lot…
Τι Συνδέεται δεδομένα (Σημασιολογικό έννοιες)?
Χρόνια: Όπως υποδηλώνει το όνομα, α. τα στοιχεία της που συνδέονται με κάθε other.At παρουσιάσει η ιστοσελίδα περιέχει τεράστιο ποσό των δεδομένων που διατηρούνται ως επί το πλείστον σε html και δεν συνδέονται σε καμία ways.So, if we want to use this…
Τι είναι “άπειρη κύλισης” και “Flyweight” πρότυπο?
Χρόνια: The “Infinite scroll” και “Flyweight” patterns are used to load large number of objects in web applications. Infinite scroll is also called auto paganize/endless pages. In this technique pre-fetching of contents is done and added directly to the current…
What is Memory mapping in java?
Memory mapping in java is a low level concept to make file I/O more efficiently. Generally we use stream or buffer stream to do file I/O. Although buffered stream is widely used to increase the performance of file input and…
How to create a signed applet using a self-signed certificate?
The following article will describe how to create a signed applet using a self-signed certificate? Certificate authorities typically charge a fee for the service of validating their clients’ credentials. However, for testing and demo purposes, we may create a self-signed…
Is it possible to access signed java applet code from java script function?
Signed applets are the authenticated applet to access secured data.So signed applets do not have the security restrictions that are imposed on unsigned applets and can run outside the security sandbox. But java script code is treated like unsigned code.So…
When should you use a Rule Engine?
Ένα : You need to check the following points before implementing Rule engine in your project. ένα) When business logic changes frequently: If your application has business logic which changes frequently, you should go for rule engine to maintain those…
When not to use a Rule Engine?
Ένα : Let me describe when not to use Rule engine. Rule engines are not for process/ work flow implementation. So if you need to implement the process or work flow of a software application then you should go for…
What is jQuery mobile framework?
Χρόνια: jQuery mobile framework is popular because it it lightweight, “write less, do more”, JavaScript library.Some time writing java script is complex.So the purpose of jquery is to make it much easier to the developers to use javascript with the…
What is Near-Field Communication (NFC) on Android?
Χρόνια: Near-Field communication (NFC) on Android is the next generation technology with a lot of potential in the mobile market place.When this technology is integrated with your mobile device, the mobile device will interact directly with posters, magazines, products at…
How to convert Drools decision table (excel spread sheet) to a (.DRL) file in Drools?
Ας προσπαθήσουμε να δημιουργήσουμε μετατρέψει τρέχουν τα σάλια τραπέζι απόφαση (excel spread sheet) to a (.DRL) file in Drools. Η τάξη SpreadsheetCompiler χρησιμοποιείται για να μετατρέψει το XLS είσοδο και το αρχείο CSV σε ένα (.DRL) αρχείο. Η απαιτούμενη συσκευασία είναι “org.drools.decisiontable.SpreadsheetCompiler”.You…
