@whgudrn said:
Is there limit using a day?
I want to use the API in searching movie Service!
When users are many, isn't limitation in the service?
I wonder about using limiting or rate limiting something in Search API!

API Request Limits
First we have this information in the instructions for using the TMDb API.
https://developers.themoviedb.org/3/getting-started/request-rate-limiting

And Travis Bell, the Administrator, has already given us this explanation.

For API Requests:

One of our CDN providers enforces some base level rate limiting to help prevent DDOS attacks.
I believe it's a maximum of:
50 requests per second and
20 connections per IP.
See here: https://www.themoviedb.org/talk/62c7c1b258361b005fd2e747?page=1#62c83b78befd91005007a0c7

For Images:

For image.tmdb.org the only thing we limit is the max number of simultaneous connections.
The limit is the same, 20.
See here:
https://www.themoviedb.org/talk/62edd3ca46aed400917de201#62ee88e7176a940086449cdf
https://www.themoviedb.org/talk/62c7c1b258361b005fd2e747?page=1#6301a107097c49007f60374a

You mean There is no limit in a day! and just 50 requests per second and 20 per IP! um.. then 20 connections per IP means one IP can request just 20 times?

@whgudrn said:
You mean There is no limit in a day! and just 50 requests per second and 20 per IP!
um.. then 20 connections per IP means one IP can request just 20 times?

I believe that one of the 20 IPs can make a maximum of 50 Requests per second.
I personally have never tested it.

There is no daily maximum, no.