Group chat database design. There are two implementation options available .
Group chat database design Here in this blog, we’ll be discussing WhatsApp’s generic architecture and which could also be used as a base for designing any such chat application. Dec 24, 2023 · Building a Distributed Chat Application Finally… here we go! I’ve been learning about system design, web sockets, typescript and so much more and wanted to create something fun out of it Chat-API is a Go-based RESTful API that allows users to chat, group chat, status, video call, call and save messages, media with preferred tags and manage reminders. Discover group chat database design, include the articles, news, trends, analysis and practical advice about group chat database design on alibabacloud. It is extremely important to nail down the exact requirements. You can use the Contacts app to find someone’s contact info or organize contacts with labels like "friends" or "family. Nov 17, 2025 · Understanding the chat architecture and system design of a real-time chat application, including the client & server side, features, & protocols. I have experience with no SQL databases but what is the best way to store the messages as I can see it become extremely large. Store both a list of users for each Group, as well as a list of groups for each user. Here is how the pattern looks: Note that you want to avoid reserved words for table names, so don't name your tables exactly as shown in the diagram. The idea is not just to have groups of users, but also groups of permissions. Jun 21, 2023 · The chat server sends the message to user B and stores the message in the database if the receiver’s status is offline. The iPhones do not have any duplicate group chats created. Users can be in an unlimited number of group chats. The demand for online communication across the business and workplace brings the entire collaboration in one place. If you don’t find any option to join the group or instead find Ask to join group or Contact owners and managers, go to Request to join a group (below). How can I fetch message from the following : In 1 group there can be only 1 user, 1 employer and 1 Admin Jan 19, 2025 · Creating a schema for a chat application requires careful thought to ensure scalability, clarity, and Tagged with beginners, database, webdev, programming. Contribute to chengw1005/system-design development by creating an account on GitHub. Jul 25, 2013 · We need to create a chat feature in our web app based on spring MVC. The entity-relationship diagram of Chat Application shows all the visual instrument of database tables and the relations between User, Group Chat, Chat, Smiles Chat etc. In actual scenario, there could be 100s of columns needed to represent group chat completely and similarly, specific columns to represent one-to-one chat. The main Users in group chats do not all have to be friends, however, you have to be friends with a user to add them to a group chat. Whatsapp is also available on the web. chat_rooms. Step 1 - Understand the problem and establish design scope It is vital to agree on the type Jul 10, 2025 · Learn how to design a real time chat application using WebSockets, which is scalable, reliable. Apr 22, 2017 · I know there is a lot of posts out there discussing Db design for a chat system, but they didn't explain anything about the scalability of that design, so here my question. Nov 10, 2023 · This tutorial and example will walk through an ERD of a simple chat application. I am wondering if what I have is an overkill by having two membership models - Community membership which only stores which users are part of the community and conversation Jan 3, 2023 · I am currently learning Cassandra, and I am having difficulty coming up with a good database design that allows for private and group messaging and a message inbox. Requirements Our Apr 2, 2024 · Requirements The WhatsApp messenger design should meet below requirements: Functional Requirement Conversation: The system should support one-on-one and group conversations between users. e Whatsapp. This is a very abstract design just to get an idea. Sep 18, 2018 · I am going to implement chats between two or more users. We have implemented 1-1 chat, Group chat. In this video, we will learn how to design a heigh performing efficient database for a private chat application. Dive in to see what we learned. Whether you are new to database design or an Click the group Join group. What is Whatsapp? Whatsapp is a chat application that provides instant messaging services to its users. Unlock the potential of your real-time chat and messaging applications with our comprehensive guide on developing a robust and scalable database schema using a backend as a service and AI tools. Prerequisite Basic knowledge Dec 28, 2020 · Goal This is a simplified database modelling example, which aims to provide a basic structure of the database and demonstrate data persistence. Here’s a Jul 6, 2021 · Hi, in my application I’m developing I need to allow for chats between any 2 users. So right now, I only have the functionality for private chat, aka a chat between two users and two users only. I am self taught developer currently in high school building side projects. Subscribe 3. Best practices to Design A Real time Chat Application. Search for jobs related to Group chat database design or hire on the world's largest freelancing marketplace with 24m+ jobs. It is important to explore the feature requirements. The best way to design a database schema for users belonging to multiple organizations/groups and their roles in that group is to have a user table with a column for the user’s role. Database Schema for Private Chat and Group Chat Hello, I'm trying to build a Chat App and wanted to get some feedback on a database design for these concepts. Jul 31, 2024 · I am building a mobile groupchat app using the MERN stack and want to understand if this datamodel is scalable and makes sense. Apr 28, 2023 · Step 2: Database Design and Implementation Firstly, design the database schema for our chatting system, including tables for users, chat rooms, messages, etc. Jul 23, 2025 · A well-structured database ensures the reliable storage and retrieval of messages while supporting real-time messaging interactions and collaboration. Explore skills, insights, and pro-tips. Jul 17, 2017 · This ER (Entity Relationship) Diagram represents the model of Chat Application Entity. Feb 8, 2022 · Designing a database for an application is a good way to learn and practice your database design skills. Another use for me would be unlimited categories w/in categories to filter a search for services. The way it works is that your groups or Roles have not only a list of users assigned to Mar 7, 2025 · Learn how to design real-time chat applications like WhatsApp. I'm just starting to lay out the fundamental parts of the project in the database. Dec 1, 2017 · You want many chat_clients per chats, so therefore you should remove client_id from the chats table and add chat_id to the chat_clients table. If you really like it? use it, implement it and share the link with me ;) Happy Messaging! Dec 27, 2021 · When a user participates in a group chat, his message is broadcast to all group members. which can store conversation between two people in a chronological order. Use groups in Gmail Email a group We had the same choice to add group accident insurance (w/AFLAC) last year's open enrollment and the extra premium seemed low (can't remember the cost), so we decided it was worth trying. It's free to sign up and bid on jobs. Feb 28, 2023 · Discover the best database for chat applications, optimal chat app architecture, and database structure to build scalable, real-time messaging solutions. Apr 22, 2017 · My basic idea is to build a web-based chat application. Storage One-on-One chat schema Preparing for system design interview questions. Oct 1, 2018 · Technology stack to build a messaging app Building chat apps with a dynamic messaging experience requires a comprehensive technology stack that includes front-end, back-end, database technologies, messaging protocols, and more. In this case, the message will be stored in a local database on the device. Aug 12, 2024 · Discover how to design a scalable real-time chat system capable of supporting millions of users. What is a good design/schema that would allow me to have these capabilities? Right now I have a schema that looks like: CREATE TABLE ChatRooms ( id serial Dec 16, 2021 · I am trying to build a chat application similar to slack chat, I want to understand how they have designed their database that it returns so much information at once when someone loads a chat, which Apr 14, 2018 · IMO, this can be easily done on client side you dont need much complicated design on your database just simple user and nessage storage but in group chat issue client side can handle it very will Mar 25, 2019 · Database design for Facebook In this blog post, I will be discussing about how the databases are stored in a complex system such as Facebook. Jul 23, 2025 · Database design is important for messaging platforms like WhatsApp and enables efficient management of user accounts, contacts, messages, and media files. Would it help to cache some of the messages to help reduce API calls to the DB? Jan 24, 2023 · I believe what I am looking to do is called nesting. I have the following schema in mind for a Messages collection: { _id: ObjectId (), userID1: "userA_ID", userID2: "userB_ID", sen… Sep 26, 2018 · General Chat - (Anyone and everyone) Private Chat - (Between 2 Users) Group Chat - (3+ Users) I am still new to database design and would like some insight on how to design my database. I have checked a lot of database structures over the internet for my requirements and the conclusion is that there are so many solutions for May 11, 2023 · 1 I am trying to design the database schema for a simple chat application with MongoDB. It is one of the most used mobile applications on the planet, connecting over 2 billion users in 180+ countries. The complete working code of firebase live group chat is available. db. First idea: The members of group and event chats will be stored in respectively event_users and group_users tables. Also if User A deletes the conversation User B still should have access the Jan 10, 2025 · To get a more insight view of these group chat database designs, let us have a brief comparison between Client-side database storage and Server-side database storage in group chat applications. In social media, it’s what allows comments in comments, etc. Group Chat Messages We can create another groups service whose primary responsibility will be to maintain information about groups and group members. Message Schema: The design encourages separating one-on-one chat messages from group chat messages to ensure scalability and retrieval speed. I assume this has something to do with database design. In yellow Sep 21, 2022 · Let's design a Whatsapp like instant messaging service, similar to services like Whatsapp, Facebook Messenger, and WeChat. Aug 2, 2011 · For group chats, you should have a table with id, title, timestamp that holds the group chat main record, and another table that holds the users that are part of that group chat, with id, group_chat_id, user_id fields. ChatApp is a robust and user-friendly chat application built using PHP, MySQL, and JavaScript technologies. Mar 27, 2018 · I'm creating a messaging app and having trouble coming up with a database design that is scalable. com Messenger Database Design Concept for chat applications, by using this, you will be able to create group chat or a one to one chat application without a hassle. g. It also maintains associations between group IDs and conversation IDs, enabling efficient retrieval of group-specific conversations and facilitating seamless communication and membership management among group Dec 24, 2022 · This schema includes the following tables: users: Stores information about each user, including their username and password. May 28, 2023 · Every data access operation must query the metadata store to identify the chat database shard before interacting with the respective chat database shard 5. Explore architecture, scalability, security, and performance optimization techniques. for asynchronous messages or syncing chat history between two devices? Because that question could determine a lot. For group chat I have come up with following schema. Jun 19, 2022 · Understanding slack chat database design architecture with emojis and replies Even though this is honestly more like a discussion and there is no perfect answer to such a question, I will try to… Oct 9, 2024 · This article provides guidelines for planning a desktop database, including deciding what information you need and dividing it into intermediate tables. I want to design a Db o Aug 26, 2024 · Let’s explore some drawbacks on the above design Chat table: stores meta data for both: one-to-one chat and group chat. What would be the ideal database (s) for us to scale the chat app well and what should be the design? Jun 6, 2017 · Store a list of groups in the User and store no list of users for the group. The application uses PostgreSQL for data storage, Gorilla Mux for routing, Reddis and kafka for scalability. Jan 18, 2024 · For the sake of this article, our chat app supports person-to-person conversations and group conversations we have to design our database to accommodate that. The traditional way to model this is using a pattern called Role-Based Security. Due to which there are optional columns like GroupChat and Name. Let's design a WhatsApp like instant messaging service, similar to services like Facebook Messenger, and WeChat. Learn more about editing email aliases. Dec 11, 2022 · A chat app performs different functions for different people. I am not very experienced with SQL so please forgive me. " May 10, 2023 · I received an invitation to interview for “Remote Benefits Representative. It seems like a legitimate company. System design meets the needs of your business or organization through coherent and efficient systems. Acknowledgment: The system should support message delivery acknowledgment, such as sent, delivered, and read. This comprehensive guide covers key architectural components, scaling strategies, and best practices for building robust chat applications. Is mysql database good to store chat messages or i need to use nosql database like MongoDB? Feb 12, 2024 · What is WhatsApp ? WhatsApp is a chat application that provides instant messaging service to its users. 4K 145K views 2 years ago In this video we will design a Chat Application System Design Interview Basics Playlist: more Database Overview The Chat Application Model Database is designed to provide a robust and structured data storage solution for a chat application. I save the members per group into a separate database table and once a user sends a message Feb 16, 2016 · Now I want to have group chat database design between all of them. What is the best way to design it? I created Chat model and many to many relation between chat and users. If you change a group's email address in the Admin console, the previous address gets added as an email alias. Group Database stores metadata essential for managing groups within the chat application, including group names, creators, and settings. The requirements are simple. This would then be a foreign key to chats(id). Introduction Building a distributed chat system was one of the things i wanted to build, Designing a chat system like slack or messenger has always been among the top questions asked in interview's. It provides real-time messaging, group chats, user authentication, message history, notif Group Chat 398 inspirational designs, illustrations, and graphic elements from the world’s best designers. com I was thinking something like a table that had all the group chat IDs and who was in which group chat, but MySQL doesn't have a list functionality. Discover how to design a chat app like WhatsApp! Learn about real-time messaging, storage options, system architecture, and more! Click to explore! As part of the design, does the chat need to be stored in the cloud database? e. Once the user has added their desired friend (s), they can select the three dots button in the top right corner which gives Mar 11, 2019 · The current system has around 5000 active users and 30000 daily messages which we expect to scale around half a million message a day. For example, you do not want to design a system that focuses on group chat when the interviewer has one-on-one chat in mind. It serves as the backbone for managing user accounts, friend relationships, and chat messaging features within the application. find({ messages: { from: 1 } }) The above database structure is also capable of implementing in RDMS database as table relationships using MySQL or MSSQL. The app should support realtime groupchat (for community members) and 1-1 direct message chats. Sep 18, 2023 · In today’s fast-paced digital landscape, instant messaging has become an integral part of our lives, connecting people across the globe in real-time. A good system Group_ Eva Borg - 27471833 Rania Malibari - 24797096 After this step, users are directed to the ‘Add friends’ section, where they can add friends via importing contacts, searching by username, scanning Snapchat QR codes, or adding mutual connections from Quick Add. You could add a "master" database that contains a lookup, on which database/server the single conversations can be found (or you have a schema to assign a database from hash/modulo or something). But as you read above, it is much more than that – Neurelo makes working with databases way easier and removes many of the complexities developers face when building their applications with databases. Table = Database schema for Laravel Talk Realtime users messaging and chatting system: User conversation (inbox) system with realtime messaging that can be integrated into any Laravel project. The necessity of real-time chat server which provides live community interaction rely on different platforms providing group chat or channel based on Aug 17, 2022 · I’ve also seen some chat applications do one web-socket connection per user per thread— meaning that in a two person group chat, two different web-socket channels are opened and two different messages are sent (containing the same content). To edit group information, click Edit in the upper right across from Group details or Aliases. Edit or delete a group Go to Google Contacts. Basically the interviewer wants me to develop a distributed chat system like discord that supports (send message, get message whenever anyone in the group send a message, delete a message and search a message) Aug 25, 2024 · Messages are keyed by unique message IDs or user IDs. Group Chat # Group chat is a design pattern where a group of agents share a common thread of messages: they all subscribe and publish to the same topic. Columns of that table are id, messageId, userId, groupId, date and seen. Only chats between users will be stored in chat_users. Whether it’s a small group chat among You can possibly keep a group count for a user if the group count is more than lets say 500 you should index groups collection on user. long polling, message delivery acknowledgments, group chat design, and scaling a messaging system to millions of users. For the actual messages, I was thinking one large table with the group chat IDs and the message ID. How do I create a group email (so I don't have to recreate the group email later)? - Gmail Community Help Center Community Gmail ©2025 Google Privacy Policy Terms of View, group & share contacts You can organize the people and businesses in Contacts using labels. Whatsapp is a social messenger platform, which allows users to send messages to each other. Here’s a list of some commonly used technologies in chat app development:. So this table can connect user and chat tables. At the left, under "Labels," point to the group you want to edit or delete. System design is the process of defining the architecture, interfaces, and data for a system that satisfies specific requirements. Here’s a breakdown of a database design that could support a scalable and efficient chat application. After all iPhones were updated to iOS 18 with RCS compatibility from their carrier, group chats broke. Features of Databases for Messaging Systems Databases for messaging systems offer a range of features designed to support message storage, retrieval, delivery, and management. What is WhatsApp? WhatsApp is a chat application that provides instant messaging services to its users. Oct 21, 2025 · Learn how to build a real-time chat app like WhatsApp or Slack. Jun 18, 2018 · Real-time Group Chat using Firebase Realtime Database Today, let us show you how you (yes, just you!) can add a full-featured chat functionality to your Web, Android, or iOS app, in a day’s work … So, what is Neurelo? A quick summary is that Neurelo instantly turns your database into APIs, which you can then use to facilitate communication with your application. find({ members: 1 }) Get all the documents, messages sent by the user id of 1. Click Group information. Just a question about what the best way is to send a message to a group (Like whatsapp group messaging). Sharing: The system should support sharing of media files, such as images, videos, and audio. User status (online or offline). Sep 27, 2011 · My database schema is like this This schema is able to provide all the functions above but getting the message out from this kind of schema in groups of users is very complex. Details of the tables included. BR12. Chat Nov 12, 2011 · I am trying to build a messaging/chat system. Before we start this course, let's talk about what even is system design. If you don’t want your profile to be visible: Uncheck the Link to my Google account profile Official Google Groups Help Center where you can find tips and tutorials on using Google Groups and other answers to frequently asked questions. In writing, it's supposed to pay out some preset amounts for various accidents (regardless of insurance coverage). . Currently in the absolute most basic planning phase. Learn how to design an efficient and scalable schema for a chat application using PostgreSQL, including tables, indexes, and relationships. There will be two kinds of chat one-to-one chat and group chat. Explore the key components of chat app architecture. Whatsapp System Design. The database can be configured in an active-active replication topology across distinct data centers for improved performance, fault tolerance, and scalability 4, 14. Users can send messages to "friends" (existing contacts) and "strangers" in real time. It used structure data and to define the relationships between structured data groups of Chat Application functionalities. ” It was a group zoom where the man went over the job, the pay, and the qualifications. Group chats What we discussed until now was how a personal chat works on a system like WhatsApp. To be honest, I really don't have a good way to approach this. Messages and snaps sent in group chats can be seen and opened by all members, regardless of if they are blocked or not added. All the messages and conversations are stored in the database so that a registered user could retrieve the information when logged Apr 4, 2021 · Chat user relationship I know for cold chat history an RDBMS or Cassandra is probably my best bet but handling friend relationships, as well as user-to-chat relationships in an RDBMS or cassandra, is ugly. Nov 10, 2024 · For a chat application, the database needs to handle core entities like users, messages and groups. Apr 17, 2024 · Starting a website? Add an HTML group chat that you can customize and easily embed through copying and pasting a embed code. But what about group chats? Click the group Join group. It requires a systematic approach to building and engineering systems. If Alice sends a group chat message it will be sent with the group id and her user id. Changing the email address won’t delete emails sent to and from the group. 1. Learn the essential techniques to create a highly efficient and scalable database for chat applications with expert guidance. Build a real-time chat app using Firebase Realtime Database and React Native for seamless messaging experiences. Given a group ID, the WebSocket server queries the database forward the messages to other servers. Learn how to design scalable, secure, and high-performing messaging applications for seamless communication. conversations: Stores information about each conversation, including #database #structure #messaging #chatDatabase Structure for Messaging Application messaging application, The features I want to provide are:Sending a message Quick and simple free tool to help you draw your database relationship diagrams and flow quickly using simple DSL language. I found the following database design online but have a couple of questions about it. It is one of the most used mobile applications on the planet connecting over 2 billion users in 180+ countries. May 31, 2023 · Direct Messages Notifications for new messages Mark unread chats Group chats with the ability to join and leave the group. User B sends an acknowledgment to the chat server. It is a messaging system that is widely used throughout the globe. BR11. I'm not sure if it's necessary, worth it, or even "right" to have a graph database in my tech stack just for this relationship mapping. Mar 6, 2020 · Once a user sends a message to a chat group, assuming there are N memebers in that group, N - 1 rows are created in chatMessagesSeen table. The server queries the group cache to fetch the group chat messages The server updates the message queue with asynchronous tasks such as the generation of the chat search index Oct 14, 2018 · Design a Firestore group chat feature and build it from scratch with Angular. Messenger Database Design Concept for chat applications, by using this, you will be able to create group chat or a one to one chat application without a hassle. Third solution is to remove chat_messages table from sql databse and create nosql database with chat_messages table to store messages. Anyone who can view the group’s members can see your Google profile. We will try query first approach based on the interface we have. A well-structured database supports easy communication, real-time message delivery, and enhanced user privacy and security. Apr 25, 2018 · Today I'm going to implement Group Chat Example using Google Firebase Realtime Database. Just my opinion and how I would implement it. So let’s get started by discussing the key requirements of our service. It will be used for an application that is designed to be a messenger clone, featuring real-time and offline messaging. Jul 9, 2024 · Step by Step approach to design a messaging application like WhatsApp on System Design interview with data model, API, and implementation. New messages from one of the iPhones send as RCS in a new group chat and do not use the existing group chat. Does this seem correct? I am starting my first real web dev project, a forum/social network. It is one of the most used mobile application on the planet, connecting over 2 billion users Nov 4, 2022 · 1. We will limiting the discussing to User Profiles Oct 17, 2025 · Key considerations for chat app architecture, the structure and components, and technology options to help you get it right first time. Database schema Group chat table Partition key - Group Id, sort key - message Id We will also need a table for user-group relationships. -need to refresh each [FANG Interview Question] Design pipeline and database for group chat like discord Got asked this during an interview and was stump a bit. Oct 11, 2021 · Have you ever wondered how WhatsApp works? We’ve studied the high-level system design and architecture of WhatsApp’s technology. Chat as an interface is as old as the command line. From understanding data storage to the principles that define data relationships, these concepts are essential for anyone involved in designing, managing, or optimizing databases. Example: Facebook Messenger uses HBase, a columnar NoSQL database, to store massive amounts of chat data while ensuring quick retrieval times. Group chats can have a group name. SQL Database design for a group-chat system. This is also can be implemented for group chat room applications. In this video, we have a fictional “chat application”, similar to WhatsApp or Messenger. Jul 23, 2025 · Before designing a database, it's crucial to understand important terms and concepts. Nov 9, 2022 · Database For Chat App You might have heard the word “Slack” where startups and small businesses of the world are dominated. Real-Time Chat ServiceRequirements The user (sender) can start a one-to-one chat conversation with another user (receiver) The sender can see an acknowledgment signal for receive and read The user can see the online status (presence) of other users The user can start a group chat with other users The user can share media (images) files with other users 5 days ago · Learn the essentials of chat system design, from architecture and real-time messaging to scalability, reliability, and future trends in chat applications. Follow the steps on the screen. The Chat Application Model Database is designed to provide a robust and structured data storage solution for a chat application. Sep 13, 2021 · In this blog, we will go through the design of a chat application i. This guide covers WebSockets vs. Bonjour! Welcome to our snark sub on faux feminist Saint Meghan and her hypocrite prince, Harry. Learn more! Oct 11, 2023 · Designing a real-time chat application using Firebase Realtime Database is a rewarding endeavor, thanks to its real-time synchronization, scalability, security, and offline support. We can have group ids that map to individual user ids of members. Chat application database schema design question After researching a bit a lot of sources recommend a schema similar to this: CREATE TABLE users ( id INT AUTO_INCREMENT PRIMARY KEY, username VARCHAR(255) NOT NULL UNIQUE, password VARCHAR(255) NOT NULL ); CREATE TABLE conversations ( id INT AUTO_INCREMENT PRIMARY KEY, name VARCHAR(255) NOT NULL, Uncover the challenges in designing a group chat app, crucial for Google system-designers. In this article, I want to share with you my design of Distributed Chat Application. As soon as the device gets connected to the network and a web socket handler, it will pull all the messages from the local database and send them. A properly structured database guarantees efficiency, data accuracy, and usability. Requirements Our system Oct 15, 2024 · Designing a chat application similar to WhatsApp or Facebook Messenger involves multiple components and considerations to ensure scalability, reliability, and a smooth user experience. 1. Once the database schema is finalized, implement it using MySQL, ensuring proper indexing and relationships for optimal performance. Each participant agent is specialized for a particular task, such as writer, illustrator, and editor in a collaborative writing task. userid and query the groups from there based on the specific user. WhatsApp is also available on the web. Combining chatbots with the social interactions of direct and group messaging, chat as an interface can comprehend use cases as varied as paying your gas bill, deploying code, or building intimate social relations. Feb 26, 2020 · I am interested in the best design for storing messages between different users something like WhatsApp you can have group chats and whatnot. There are two implementation options available db. Jun 2, 2020 · What i'm up to is to create database schema (postgresql) for chat/conversation history, where i need to support couple of tricky things, such as: Chat have a name and initial creator (customer_id) Aug 8, 2017 · I have a task to do chat application like whats-app, but more simple requirements: -Chat between ONLY 2 users -For every contact to get the last message (same like whatsapp). I have a table called "Conversation" and it has the following fields: See full list on bytebytego. Nov 7, 2021 · Chat App System Design Hi all, this article basically explains the general idea of how an app like WhatsApp can be designed. Users can load the history of their conversation. Want more inspiration? Browse our search results Jul 23, 2025 · In this database design post, we'll cover the basics of database design, including how to plan your data structure, organize your tables, and follow best practices to avoid common mistakes. tcstoa ggb tsge gxh rmdoxlt feevc vnvsw uble ebdewfq iuleyw ziuo mrzpf ryegf stxket rxmi