Before you can extract data from Trustpilot, familiarize yourself with their API documentation. Identify the necessary endpoints, authentication methods, and rate limits. Sign up for a Trustpilot API key if required.

Prepare your development environment by installing necessary tools. Choose a programming language that you are comfortable with and which has HTTP request support (e.g., Python, Node.js). Ensure you have a Redis client library for your chosen language.

Write a script to authenticate and send HTTP requests to Trustpilot's API. Use your API key to access the reviews or data you need. Parse the JSON response to extract relevant information such as review text, ratings, and timestamps.

Transform the fetched data into a format suitable for Redis. Decide on a schema or structure for storing the data. For example, you might use a hash to store each review with fields for review text, rating, and timestamp.

Set up Redis on your local machine or server. Install Redis and start the server. Ensure that your Redis server is configured to accept connections from your script's environment. Use the Redis CLI to test basic commands.

Utilize the Redis client library in your script to connect to the Redis server. Write the transformed Trustpilot data to Redis. Use appropriate Redis data structures (e.g., hashes, lists, sets) to store the information efficiently.

Automate the data transfer process by scheduling your script to run at regular intervals using cron jobs (Linux) or Task Scheduler (Windows). Implement logging to monitor the script’s execution and handle any errors or exceptions gracefully.

By following these steps, you can effectively transfer data from Trustpilot to Redis without relying on third-party connectors or integrations.