Basic System Design Diagram for a chat\messaging system

In case you are looking for a starting point to design a "chat or messaging system", here is an article that I hope will be a starting point for server/cloud side design discussions or say while interviewing for a job. Before I show you the diagram, I would like to note down the basic supported functionality and the notable exclusions.

Do let me know in case I missed out on any services or needed functionality or got anything wrong.

Basic Functionality\Use-Cases

  • User Registration and subsequent authorization.
  • Profile and subsequent updating of profile.
  • Ability to send\receive messages and content.
  • Updating of status, last-active, etc.
  • Group chat.


Notable Exclusions

  • Methods, Request Calls, Payloads, Response, Exceptions.
  • Firewalls, Gateways, Load Balancing, Scaling, HA, DR.
  • Data models and implementation.
  • Chat client implementation.



I would love to hear your views. Please leave a comment in the comment box below so that I can learn from your experience.

If you liked the article...please share with your network!, In case you would like me to speak/train/coach about this stuff, do get LinkedIn with me.

Manuswath is an experienced technocrat advocating Brands, Brand-Strategy, Brand-building, Products and Product-Management, Marketing, UI/UX/Usability, Process, Methodology and People. He loves Creativity, Brain-Storming, Product-Articulation, UI/UX, Modern-UI, UI-Design, Coaching, Training, Motivational-Speaking, Productivity, Confidence, Positivity, being a corporate speaker, entrepreneur and mentor... all dashed with a pinch-of-good-natured-humor. He doesn't believe in milestones, the-journey-and-the-experiences-and-memories is what keeps him going.
#systemdesign #softwarearchitecture #services #mobileapplication #systemanalysis #jobinterview

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