How does messaging work in WhatsApp?

WhatsApp is a real-time messaging application, which makes use of Ejabberd (XMPP) server. This server facilitates instant message transfer between two or many users at any given second.

 Ejabberd is a Rock Solid, Massively Scalable, Infinitely Extensible XMPP Server, written mainly in the Erlang programming language.

Ejabberd (http://www.ejabberd.im/) is the parent, this is XMPP server which provides quite good features of open source, Whatsapp uses some modified version of this, facebook 

Messaging also uses a modified version of this. Some more chat applications likes Samsung's 
ChatOn, Nimbuzz messenger all use ejabberd based ones and Erlang solutions also have modified version of this ejabberd which they claim to be highly scalable and well tested with more performance improvements and renamed as MongooseIM.

Ejabberd is the server which has most of the featured implemented when compared to other. Since it is built in Erlang it is highly scalable horizontally.

For the database management Mnesia DB comes into play. Mnesia is a multiuser distributed DBMS which happens to be the default DB of ERLANG. Thus by using Mnesia, the app is able to achieve quicker request responses, thereby improving the overall efficiency.

FreeBSD is the operating system upon which WhatsApp is laid upon. Improvising on the ERLANG based applications and optimizing FreeBSD, WhatsApp is able to achieve better throughput. For storing multimedia files, the app uses an exclusive web server YAWS.

Digital World Computer (www.digiworldcomputer.com) Upgraded

We are applying to register as Society under society Act. We are happy to inform you that we have upgraded our features and services at digiworldcomputer.com. We are informed you all that we will be highly concerned and respectable organization in our work. We understand your concern and legislative way of dealing.

Please support us and make our future better.

We exist because you want that we will work for you.

Coaching Class for Class 9th, 10th , 11th & 12th In Hapur

Prof. Raj Nayyar, Computer Science has starting teaching in our coaching center on the request of Digital World Computer. We have glad to know that Prof. Nayyar was starting his career in 1997 from Kerala and now he is living in Ghaziabad.

He has subject expertise in Computer Science, Assembly Language, Data Structure, Computer Architecture and Computer Graphics Language. He also has expertise knowledge in C, C++, Python, Hadoop, Oracle, Php and Java.

Contact for Starting Batch for Class IX to XII classes.

Timing: 03:00 PM to 09:00 PM (6 Days a week, Sunday Leave)

Special Batches for government jobs preparation: Computer Subject Only

Timing: 09:00 AM to 05:00 PM (Saturday and Sunday Only)

Contact:

Digital World Computer

1085 Tyagi Nagar Hapur

(Behind Sher Wali Kothi)

Mob: +91-9013350603

Email: admin@digiworldcomputer.com

Tips for Boosting your Performance in Exams

1.      Write neat & clean.

2.      Give to the point answer.

What the examiner ask in question paper, answer it in a proper way, don’t confuse and told the whole story.

3.      Attend questions in a serial manner.

4.      Answers should be include diagram and chart.

5.      Write in this way that examiner can easily understand.

Don’t use too much jargon's.

6.      Quality is the king so always writes quality content instead of quantity manner.

7.      Practice on last year question papers.

8.      Don’t panics if you haven’t proper answers, calm down and memorize the whole work you learned this will help you in answering.

9.      If there are people around who are panicking, avoid them. They are not doing you any favour!

10.  Go to the toilet before the exam starts. Exams can be quite long and there is no time to waste. 

11.  Read all the questions carefully before starting and quickly plan how much time to allocate to each.

 

12.  If you use another sheet, graph paper and any other paper which has to be attached with examination sheet then write your necessary details on it and verified it with the invigilator.

13.  Never give your name or any other details which can show your identity.

Safe & Simple Blogs for Your Students, Teachers & Parents (Simple Like Online Whatsapp Group)

Your students have a voice at Kidblog. We're trusted by teachers around the world. Set up your class for free in 30 seconds.

Click Here to Start Blogging

Safe

 

Kidblog provides teachers with the tools to help students publish writing safely online. Students exercise digital citizenship within a secure classroom blogging space. Teachers can monitor all activity within their blogging community.

Simple

Kidblog offers a kid-friendly publishing experience suitable for any K-12 student. We help students focus on what's important by removing distractions so they can focus on writing. Teachers efficiently manage all posts and comments through an easy-to-use dashboard.

Authentic

Kidblog gives students’ writing a meaningful purpose and an authentic audience. Students are motivated to write for their peers and engage with a global network. Teachers moderate all content, so nothing goes live until you say so.

Transformative

Re-imagine writing instruction. Built by teachers, for teachers, Kidblog’s platform is deeply rooted in the pedagogy of writing. Engage students in the process of pre-writing, drafting, revising, editing, publishing, and commenting — Kidblog facilitates feedback and moderation at all stages.

Improvement and Suggestion Area in Indian Education System

Can anybody suggest me an educational blog in India, where student and teachers can interact with each other regularly in real?

A subject teacher teaches his subject in a class using any board but this is not possible to make it electronic in Indian schools. We have subject expertise teacher in every school but have not proper resources to make it digitize.

Is this important to make content digitize? What we want to make in Indian schools?

As a suggestion on the behalf of Digital World Computer, we suggest that this is spoon feeding work for Indian schools and if they want they will create history.

Where we get content for digitization?

It is the easiest part because already we have subject expertise in each school. Now, we give resources to make his content online.

Subject teacher teaches his content every day in a practical way. Teachers have to make live video of teaching class and write a summary article on it. At a day end every subject teacher has its unique digital content. Now he can upload his content on his personal blog.

So, every person can read his content through his personal blog. This will make a big change in Indian Education System. Because everybody knows what the teacher teaches in today class either it is parents, students, higher authority or students belong to other school.

These notes can be stored for a long time. There is no restriction to remove older post and it is totally free.

DBA LochanSinghal

Administrator

Digital World Computer