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What are the functional requirements for a chat application?

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What are the functional requirements for a chat application?

The chat application needs to have a low latency because it needs to look real-time so while you’re sending a message, the other person should immediately be able to see that message. Obviously, it should also have high availability because the system should not go down no matter what happens.

How can I create a chatting app?

How to Create a Chat App [Final Checklist]

  1. Research the market.
  2. Define the competitors of your instant messaging app.
  3. Select relevant features to make a chat app.
  4. Pick the first platform(s) to create a chat app for.
  5. Think through the monetization strategy for your instant messaging app.
  6. Write your thoughts down.
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What are the functional requirements of Whatsapp?

Application must be lightweight and must send messages instantly. Application must work on all mobile and tablet devices. User interface must be consistent on all devices. Future plans include providing inline document viewer that lets users view pdf and word attachments within the application chat window itself.

How long does it take to develop a chat app?

How Long Does It Take to Develop a Chat App?

Convenient contact sharing 8 hours
Location about 8 hours
Voice and video calls starting from 200 hours (depending on the product’s complexity)
Establishing settings 8 hours
Design (UX/UI) at least 100 hours for prototypes

How do you make a chat app without coding?

Appy Pie’s instant messaging app builder lets you create an instant messaging app without any coding. The platform has a unique drag-and-drop interface which lets you add as many features as you want to your app.

What are non functional requirements?

Nonfunctional Requirements (NFRs) define system attributes such as security, reliability, performance, maintainability, scalability, and usability. They serve as constraints or restrictions on the design of the system across the different backlogs. They ensure the usability and effectiveness of the entire system.

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How to build a WhatsApp messaging app like chat app?

In order to build a WhatsApp like chat app, one should have a detailed understanding of its functioning mechanism and technicalities. How Whatsapp Messaging App is Working Technically? WhatsApp uses Ejabberd (XMPP) server which facilitates instant message transfer between two or many users on a real-time basis.

How many messages does WhatsApp manage in a day?

WhatsApp manages over 50 billion messages a day. The key to smooth data processing lies with the message queue length. The length of the message queue of all the processes associated with a node is monitored.

How much does it cost to develop an app like WhatsApp?

Add 852 hours to the total amount if you want to develop an app both for iOS and Android. The more versions of your application you want to release, the more money you will need respectively. Total cost of WhatsApp-like app for two platforms (iOS and Android) may vary from $110,2K to $162K including back-end.

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What do you need to know about Whatsapp server architecture?

You have to think about server architecture beforehand. Chat apps handle millions of requests every day. Such high-load systems require extra reliability and 100\% uptime. WhatsApp uses Extensible Messaging and Presence Protocol (XMPP) to exchange data between the users. The protocol is decentralized, secure, and flexible.