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Refreshing chat messages in iOS chat app

user1323 Published in May 25, 2018, 6:53 pm

I am currently creating an app where 2 users will have the ability to chat with one another. Specifically, it will be an iOS app using Swift as the main language. Most chat app tutorials on the web recommend using Firebase but I personally want to use MySQL since the rest of my database activities for this app are done using MySQL. I also do not want to use any existing libraries and want to do this all on my own.

I only have questions regarding the efficiency of using MySQL. When accessing the database, I create a URLSession using swift which then uses a predetermined link that points to my PHP scripts on the backend to handle the database accessions. The only problem with this is that my chat functionality of the app will have to refresh messages (to see messages that the other user has sent you within a second or so). I am confused as how to go about this. My current idea is to have a Timer that calls the URLSession data task every second or so to retrieve new messages from the database then display them on the user's screen. Would this be efficient or is there a better way to do this? I feel as if this would bog down MySQL in some way and would over all slow down the efficiency of the database. Is there a better way to go about this?

Thanks in advance.

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