Blynyddoedd : 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…
What is Map/Reduce in Hadoop?
Blynyddoedd : 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.…
Sut i gynyddu perfformiad prawf JMeter?
Mae: Yn dilyn ceir rhai technegau y gellir eu cymhwyso i gynyddu perfformiad prawf JMeter. 1) Lleihau'r nifer o edafedd cydamserol :The hardware and server capability limits the number of threads which can run effectively with JMeter.If lot…
Beth yw cysylltiedig data (Cysyniadau Semantig)?
Blynyddoedd: Fel y mae'r enw'n awgrymu, ei data sy'n gysylltiedig â phob other.At cyflwyno y we yn cynnwys swm enfawr o ddata sy'n cael eu cadw yn bennaf mewn html ac nid ydynt yn gysylltiedig mewn unrhyw ways.So, if we want to use this…
What is “infinite scroll” a “Flyweight” pattern?
Blynyddoedd: The “Infinite scroll” a “Flyweight” patterns are used to load large number of objects in web applications. Infinite scroll is also called auto paganize/endless pages. Yn y dechneg hon cyn-nôl o gynnwys yn cael ei wneud ac yn ychwanegu yn uniongyrchol i'r presennol…
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. Er y nant buffered cael ei ddefnyddio'n helaeth i gynyddu perfformiad mewnbwn ffeil a…
How to create a signed applet using a self-signed certificate?
Bydd Mae'r erthygl ganlynol yn disgrifio sut i greu applet lofnodi gan ddefnyddio tystysgrif hunan-lofnodi? awdurdodau tystysgrif fel arfer yn codi ffi am y gwasanaeth dilysu eu cleientiaid’ cymwysterau. However, at ddibenion profi a demo, efallai y byddwn yn creu hunan-lofnodi…
Is it possible to access signed java applet code from java script function?
Applets Llofnodwyd yw'r rhaglennig ddilyswyd i gael mynediad lofnodi sicrhawyd data.So applets nad oes ganddynt y cyfyngiadau diogelwch sy'n cael eu gosod ar applets heb eu harwyddo ac yn gallu rhedeg y tu allan i'r blwch tywod diogelwch. Ond cod sgript java yn cael ei drin fel code.So heb eu llofnodi…
When should you use a Rule Engine?
Mae : You need to check the following points before implementing Rule engine in your project. a) 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?
Mae : 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?
Blynyddoedd: 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?
Blynyddoedd: 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?
Let us try to create convert Drools decision table (excel spread sheet) to a (.DRL) file in Drools. The SpreadsheetCompiler class is used to convert the input XLS and CSV file to a (.DRL) ffeil. The required package is “org.drools.decisiontable.SpreadsheetCompiler”.You…