When the web application is built on PHP, the API call sent from the application to the server has some limitations. In that case, every request will take some time to get a response, and remaining requests will be held in a queue, hence your application will become slow. Once PHP-FPM is installed on the server, we can configure how many requests can be served in a time frame and increase the API response. Review collected by and hosted on G2.com.

There are not many drawbacks, but as the number of APIs increases on PHP-FPM, there will be a load on the server. Review collected by and hosted on G2.com.