This issue indicates that the URL in question has a Time-to-First-Byte (TTFB) exceeding 600ms.
Why is this important?
TTFB measures the duration from making a request to the server to receiving the first byte of data. Slow TTFB can lead to prolonged page load times and affect user experience negatively.
When users visit a URL, the browser requests the content from your server. It might take considerable effort on the server’s end to deliver a complete page. Taking the example of a user checking their purchase history, the server must retrieve each user's records from the database and integrate it into the webpage.
Streamlining your server's processing efficiency is vital for minimizing the wait time for pages to load.
What does the Optimization check?
This Optimization is activated for any HTML page within your site if the server takes more than 600ms to respond to the main document request.
How do you resolve this issue?
To enhance server response times, pinpoint the primary operations your server executes to deliver webpage content and determine their execution times. Target the lengthier tasks for optimization.
Slow responses can have numerous causes, and here are several strategies for enhancement:
Refine your server's application logic to generate pages more rapidly. Frameworks often provide optimization guidelines.
Streamline database queries or consider moving to quicker database systems.
Expand your server's hardware resources, such as memory and processing power.