Hands-On Application: Movie Recommendation Service
Walk through a movie recommendation service that uses PostgreSQL as a vector database.
We'll cover the following...
Let's learn how to build a simple yet practical application that provides movie recommendations based on user-provided search criteria.
This will be split into three important steps, which will be executed in order:
- Enable the - pgvectorextension.
- Load the movie data into the table. 
- Use the movie recommendation service. 
Below is the high-level architecture of the solution. In response to a user query for movie recommendations, the application executes a similarity search in the PostgreSQL database. The movie data is converted into vector embeddings and loaded into the database as a separate process.
Set up managed PostgreSQL service
Aiven is a fully managed cloud database platform that provides various open-source database services, including PostgreSQL. It offers an easy way to set up and manage a PostgreSQL database with vector search capabilities, allowing us to focus on building our application rather than managing database infrastructure.
- Sign up for a free Aiven account and log in to Aiven Console. 
- Create a PostgreSQL service. 
- In the Aiven console, go to the organization > project > Aiven for PostgreSQL service. On the "Overview" page of the service, under "Connection information", copy the "Service URI". 
- Note down the Service URI because it will be used in subsequent steps. ...