HTTP endpoints monitoring service

It's a service with Golang programming language to monitor HTTP endpoints so that in some configurable periods
(e.g., the 30s, 1m, 5m) this service sends HTTP requests to the endpoint and logs the response status code

Endpoints

To use this service a user should first register at register endpoint then he should login to get a token at login
endpoint then he can use the token to add url at url endpoint

Database

I have used postgres database for this project

Example of use

$ curl -X POST -d '{"Email": "elahe.dstn@gmail.com", "Password": "XXXX"}' 
-H 'Content-Type: application/json' 127.0.0.1:8080/register

$ curl -X POST -d '{"Email": "elahe.dstn@gmail.com", "Password": "XXXX"}' 
-H 'Content-Type: application/json' 127.0.0.1:8080/login

this should return a token

$ curl -X POST -d '{"URL": "https://www.google.com", "Period": 2}' 
-H 'Content-Type: application/json' -H 'Authorization: token' 127.0.0.1:8080/url

Handling URL Gets

A period of time is defined for each url to be checked.A goroutine is running and every minute it checks if each URL
should be gotten or not.The maximum Period is 100 minutes.

Explanation of the project

I have a table for users in my postgres database when a user registers at register endpoint I save the user's info in
the table then a user which has registered before can login and I use JWT to give him a token, he can use the token to
add urls at the url endpoint the default period is 1 minute and he can specify the period explicitly when posting the
url.A goroutine is running and each minute gets all the urls, if the period has expired it gets the url and insert the
information in redis, each 100 minutes all the data in the redis will be inserted in the status table in the postgres
database and deleted from redis, these statuses will be deleted from database after 2 days.

System design

As shown in the image I tried not to have a single point of failure so I have a backup database and I have run two
instances of the project, there are even two load balancers and the keepalived gives the IP of the working balancer to
another in case the first one fails to operate.

Load test

I used K6 and here is the result:
Load test on register end point