ESP32 Forum

Hello (sorry if my doubts are kind of basic but i'm just starting).

I want to start a new project related to sending data from a sensor to an SQL-Server. I've been looking for information trying to understand how it works and I see that some users make HTTP REQUESTS (most of cases POST request) to their servers, then this request is processed with PHP and finally stored in an MySQL database. If I could do a diagram I would do something like this:
But is there a way to link the micro-controller with my database without using an HTTP request and PHP? Something like this for having a faster communication between my micro-controller (ESP32) and my database.
I ask this because for example if my sensor sample rate is about 400 HZ, I need to make an HTTP request every 1/400 seconds and it sounds kind of inefficient. I guess a solution is making a 400 size buffer and sending it, for example, every second, but I'm not sure if it is the best solution. Is this possible with the ESP32 or I need to change to something more powerful like a RaspberryPi?

Thank you for your time

Sending a request, be it a SQL or a HTTP[-S] one, 400 times per second is pretty inefficient in the first place. Suggest indeed saving up e.g. 1 second of samples and sending it like that. If you do that, it doesn't quite matter if you drop it directly into a SQL database or if it needs to go through php first.

ESP_Sprite wrote: ↑

Sat Jun 20, 2020 11:11 am

Sending a request, be it a SQL or a HTTP[-S] one, 400 times per second is pretty inefficient in the first place. Suggest indeed saving up e.g. 1 second of samples and sending it like that. If you do that, it doesn't quite matter if you drop it directly into a SQL database or if it needs to go through php first.

Thank you for your response

It sounds interesting, It is possible just dropping the information into my SQL database without PHP using the ESP32? What should I know for doing something like that? Does it exist a project like that I can use as an example?

Regards

I'd say it depends on the database, but to be honest I'm not that familiar with the interfaces they have.