Technologies used so far:

Hosted on a linux VPS.

Secured site (https) - using letsencrypt

Spring Boot with IntelliJ

H2 Database Engine / JPA

Thymeleaf & a free html template

Bootstrap. Responsive design.

Grafana

Git

reCaptcha

Google Analytics

REST API - Swagger

Add books via API

Sending emails from sofiaungureanu.ro ! Email server integrated. Can receive emails even if the website is down.

Anti-spam features - for contact page

JWT for REST API

Add tests using Mockito

To do:

Fix CORS issues.

Add fb messenger chatbot

Create users and login feature - with sessions

Use docker - just for demo - maybe for a mysql server

Use themes (after login - for example)

Use Apache Pulsar / Kafka as proof of concept

Improve Google PageSpeed insights (a bit too much time loading javascript)

Move Grafana on another server - so it can detect downtime (self-hosting on a raspberry)

New UI made with React

Login using Keycloak - maybe