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✨Chat Socket

Minimized chat demo to ensure the reliability and security of message.

  • If you will familiar im project, run it.
  • If you will familiar im component function quickly, run it.

Project Directory Definition

.
├── Makefile
├── README.md
├── client
├── server

Project Structure

General Structure

structure

Server Message Transfer Flow

structure

In-Depth Question

Gateway

How to achieve websocket pool?

https://github.com/charlie-bit/websocket_conn_pool

How to set logic deadline for gateway ws connection?

> First, establish the connection between server and client
> decided on the maximum amount of time you want to allow for a particular logic to complete
> we can implement a timeout machanism

How to set logic message size for gateway ws connection?

> decied on incoing webscoket message sizeåå

How to avoid gateway connection resource waste?

>   websocket connection pool
>   set idle deadline for conn 

How to implement kick off user?

How to implement user login in several platforms?

Message

How to ensure message safe?

>   encryption websocket message
>   auth when buildding ws connection

How to ensure message timely transfer?

>   keep-alive for ws connection
>   heart beat for ws connection
>   healthy network infrastructure

Transfer

How to storage message?

>   storage message with no sql database
>   use redis cache message seq(hot data)
Notion

if need set ttl for message, can use insertOne with ttl. like

db.yourCollection.insertOne({
  content: "Your message content",
  createdAt: new Date(), // Current timestamp
  expiryTime: new Date(Date.now() + (60 * 60 * 1000)), // Set to expire in 1 hour
});

What is the data retention policy in Kafka and how to configure it?

when build kafka component, set time base retention kafka-topics.sh --zookeeper localhost:2181 --alter --topic your-topic --config retention.ms=86400000

How to expend cluster model?

https://github.com/charlie-bit/zk_demo

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A simple chat socket

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