Smart Android And Trik-Commenting on Andorid indeed never endless, because smart devices this one is often updated every certain amount of time. So that the market can always be garapnya menerinya with pleasure. And it is not denied if this device has become the lifestyle of each society. To not wonder if the 6th business information and many are turning to mobail smartphone. With Android which thoroughly dominated the mobile industry, choosing the best Android smartphone is almost identical to choose the best smartphone, period. But while Android phones have few real opponents on other platforms, internal competition is intense.
In old days 1 engineer had to support 14 million active users per day. And 1 million users joined in whatsapp per day.
500 million images is transfered using whatsapp per day. And averagely, One user transfers 30 to 40 images to others per day. A user opens whatsapp at 30 times in a day. Over all, there are 30 billion messages is transfered using whatsapp per day.
The basic mechanism of whatsapp is Store and Forward.
Transfering Messages
When Online
Imagine that, Client A is sends message to Client B. And both of them in online. The message which have sent by client A goes to chat Server and then it goes to Client B. In this condition this message will not be stored any other place expect client B. After message receiving by Client B, the another signal is sent to device of client A, So he got double tick in chat. Ant Client B will not receive push notification while he receive a message when he is online.When Offline
The message is sent by client A and then, the message goes to chat server. But the chat server cannot connect client B. So it is saved in Chat Server. When the client B will comes online,The stored data in chat sever goes to Client B. The data stored in Chat server will be wiped as soon as possible.System
style="font-family: "arial" , "helvetica" , sans-serif; font-size: large;"> The server of whatsapp was using 24 logical CPU ( Dual Westmere Hex-Core). And they used 100GB RAM. The did not use HDD. They used SSD for better performance.
Backend
- They used FreeBSD Operating System to create Whatsapp
- The Program language of written for whatsapp is Erlang
- They used YAWS web server which is one of the fastest server
- They are still using RC4 Encryption Method, So the data hacking possibility is very low
Platforms
- Android
- Windows Mobile
- Blackberry
- Nokia Symbian
- Iphone
Whatsapp is availing for these platforms
Sold
The whatsapp has sold to facebook for the amound of $19 Billion US dolor
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