Small service that compress users files. Just a task for interview, don't take it too seriosly. Compress can handle speed seeding of 2m records with copy (~3 min) and can return same amount records in one bulk with somehow meaningfull amount of time (cold for 2m records total ~191s in 191083ms (Views: 145430.2ms | ActiveRecord: 45651.2ms | Allocations: 136069401)). Can be speedup by pagination and caching warm up but this is not in requirements. Images stored on S3 and compressed with sidekiq async jobs.

• How to run service

1. rename .env.example to .env and input aws keys or copy given .env to root project folder
2. docker-compose up --build
3. In separate terminal you can run docker-compose run --rm web bundle exec rails db:create db:migrate db:seed to prepare and seed db

• How to run the test suite and linters

  Better to setup db on local in database.yml for test enviroment because it's a lot faster but other way with docker also works, you need to run docker-compose run --rm web bundle exec rspec to run in docker or following commands for local:

  bundle install

  bundle exec rspec

  bundle exec rubocop

• To get all sended emails you can use preconfigured http://localhost:5001/ or you need to configure your own smtp server

• GET /images Get all images with users

curl -X GET http://localhost:3000/images -H 'Content-Type: application/json'

• GET /users Get all users with images

curl -X GET http://localhost:3000/users -H 'Content-Type: application/json'

• POST /users Create new user

curl -X POST http://localhost:3000/users -H 'Content-Type: application/json' -d '{"user": { "email": "[email protected]" }}'

• POST /images/compress

curl -X POST http://localhost:3000/images/compress -H 'Content-Type: multipart/form-data' -F image\[user_id\]=2746c349-c0cc-4df4-ac25-dc019059782c -F image\[file\][email protected]

• GET /images/:id/download Get link to compressed file

open in browser http://localhost:3000/images/b39ac101-a4ea-4544-a07e-c41320cfe96e/download and you will be redirected to image url