sfbayman / chat Goto Github PK

Need java 8 and latest maven installed 
clone the git repo
get into the project directory -> cd chat
compile using the following command 
mvn clean install

java  -jar target/chat-0.0.1-SNAPSHOT.jar com.ua.chat.ChatApplication

Used H2 inmemory database
Tried to deliver the features as per given spec
Integrated with Swagger to see the rest documentation
To see the swagger documentaion, use the below URL : 
  http://localhost:8080/swagger-ui.html
Written test cases for rest layer and persistency layer 
Since apis specs are expecting different type of response, i have created multiple models and resources 
Tested the service for 1 minute with 100 users and throughput is around 800 per second

It has in-memory database - H2
Not integrated with relational database
No cache implementation
Limited test cases
No index on username column

Good documentation of classes/interfaces
Better exception handling with error codes and custom exceptions
I would have written more unit test cases and integration test cases using karate framework 

scaling application perspectinve, 
  a) need to use non blocking io /reactive programming and that makes application more scalable
  b) not using any state makes ie easier to scale horizontally       
scaling database perspectinve, data access layer need changes 

POST /chat HTTP/1.1
Host: localhost:8080
Content-Type: application/json
cache-control: no-cache
Postman-Token: f6a45fad-916b-4b38-a726-63b2c994d5b7
{    	
"username": "paulrad", "text": "This is a messagwe2ww23", "timeout": 30
}

GET /chat/2 HTTP/1.1
Host: localhost:8080
Content-Type: application/json
cache-control: no-cache
Postman-Token: 7fee5cf1-ca69-4756-ae05-151630ea99d9
{    	
"username": "paulrad", "text": "This is a messagwe2ww23", "timeout": 30
}    

GET /chats/paulrad HTTP/1.1
Host: localhost:8080
Content-Type: application/json
cache-control: no-cache
Postman-Token: edee118a-06b4-4b77-88e5-b196d2f97685
{    	
"username": "paulrad", "text": "This is a messagwe2ww23", "timeout": 30
}