C2Ladders is rating wise list of Codeforces problems which were solved by many people who have had stable rating increase. It's a reconstruction of old a2oj Ladders with new and updated problemset.
It's live at: https://c2-ladders.com/
Script for creation of ladders is available here: https://github.com/prince776/scripts-yt/tree/master/ladder
To build this, you have to worry about backend/ and frontend/ folders only, the files outside are mainly concerned with deployment on azure.
I've also created a staging database which you can use while development.
Credentials are open, please don't misuse (it has incomplete data):
username = test
password = 0XP0V69Lvhwu9wbo
Inside backend/ folder
In src/index.ts:
Change the mongoose.connect line to: (keep this change locally only)
mongoose.connect(`mongodb+srv://${db.user}:${db.pass}@cluster0.robkk.mongodb.net/test?retryWrites=true&w=majority`);
Then to build and run:
$ npm install
$ DB_USER=test DB_PASS=0XP0V69Lvhwu9wbo npm run dev
Inside frontend/ folder
To build and run:
$ npm install
$ npm start