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Chat Service Backlog

Danial

Dec 5, 2022 • 2 min read

✨ Requirements

General

allow users to have a private conversation
allow users to have a group conversation
each user can have their own contact list

Websocket

handle stickiness of the user's session
allow users to connect with multiple sessions
return count of unread messages on connect
notify users when their messages are read
send message
delete message
receive events from the server
send actions to the server

GraphQL

mark messages as read
query messages
handle blocking users

Rules

cannot contain uncensored word
cannot message anyone if you get reported 10 times

🔮 Future Features

admin panel
- UI interface to interact with settings like banned users, banned usernames, and such
detect spammers
ability to send files
when adding people to a chatroom send invitation first

🪄 Actions

Action	Function	Detail
create chatroom	test	test
add people to a chatroom	test	test
delete chatroom	test	test
join chatroom	test	test
send message	test	test
delete message	test	test
notify receiver/s	test	test
message is read	test	test

💾 The Database	🐳 The Containers	🐙 The Deployment
MongoDB	Docker	GitHub actions
Postgres (as persistent storage)	Docker Swarm
Redis (storing sessions and queue)

more info about databases in this page

scale

for scaling, there is no need for multiple GraphQL services and you only need multiple WebSocket services with a gateway to handle the load balancing.

📎 Resources