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How to Decode TLV Quickly

In TLV, the format is Tag, Length, and Value. The TLV protocol needs this type of data. Here you will know how to decode TLV data. According to IBM , TLV data is three parts. The tag tells what type of data it is. The length field denotes the length of the value. The Value-field denotes the actual value. Structure of TLV. TLV comprises three field values.  Tag Length Value EMV formulated different tags. They have their meanings. Usually, the Tag and Length together takes 1 to 4 bytes. The Best example for TLV. In the below example, you can find the sample TAG, LENGTH, and VALUE fields. [Tag][Value Length][Value] (ex. " 9F4005F000F0A001 ") where Tag Name =  9F40 Value Length (in bytes) =  05  Value (Hex representation of bytes. Example, "F0" – 1-byte) =  F000F0A001 In the above message, tag 9F40 has some meaning designed by EMV company. Here  you can find a list of EMV Tags. How to read the TLV Tag: 1 or 2 bytes Length: Length of the Value. F0-00-F0-A0-01 ==> 5 By

2 Scaling-Up And Scaling-out QlikView's Ideas! That You Can Never Miss

#The complete architecture of Qlik view:
#The Scale in complete architecture of Qlikview:
In scale-up architecture, a single server is used to serve the QlikView applications. In this case, as more throughput is required, bigger and/or faster hardware (e.g. with more RAM and/or CPU capacity) are added to the same server.

In scale-out architecture, more servers are added when more throughput is needed to achieve the performance necessary. It is common to see the use of commodity servers in these types of architectures. As more throughput is required new servers are added, creating a clustered QlikView environment. In these environments, QlikView Server supports load sharing of QlikView applications across multiple physical or logical computers. QlikView load balancing refers to the ability to distribute the load (i.e. end-user sessions) across the cluster in accordance to a predefined algorithm for selecting which node should take care of a certain session. QlikView Server version 11 supports three different load balancing algorithms.

#The scle-out QlikView Architecture:
  •  Below is a brief definition for each scheme. Please refer to the QlikView Scalability Overview Technology white paper for further details. 
  • Random: The default load balancing scheme. The user is sent to a random server, no matter if QlikView application the user is looking for is loaded or not on a QlikView Server. 
  • Loaded Document: If only one QlikView Server has the particular QlikView application loaded, the user is sent to that QlikView Server. If more than one QlikView Server or none of the QlikView Servers have the application loaded, the user is sent to the QlikView Server with the largest amount of free RAM.
  • CPU with RAM Overload: The user is sent to the least busy QlikView Server. 

Please note that this report does not go into detail on when to use and how to tune different load balancing algorithms for best performance. Cluster test executions presented in this report have been run in an environment configured with a better performing scheme for the certain conditions of a particular test.

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