How are tracking pixels implemented?

Question

Nginx

Hello, how are tracking pixels implemented correctly? I found several different implementations on the Internet, but they all seem clumsy.

As I understand it, a pixel is loaded from the client, with the data in the
pixel.png?userId=666

location parameters, it is intercepted by the server (nginx), and collects the data in the log

. How can this data be aggregated and collected in the database? Parse nginxa logs with cron every 5 minutes or what?)
Data needs to be processed by asap It

feels like there are some more concise solutions

Stack vds ubuntu + nodejs (nestjs) + nginx

Answer 1

A pixel-by-pixel request is no different than any other. Nobody bothers to transfer it to nodejs and process it as you like - put it in the database, count statistics, etc.