Right now the app will need to detect whether a field from API got change or not

for example the api will return

{
 successOrNot : false
}

when the field successOrNot become true, only then it will go to next page.

However the method that im doing right now is by using Timer.periodic, so it will call the api every 1 seconds, until the successOrNot become true then it will stop calling it. Is there another way on doing this since im afraid that it will affect the server because of api calling excessively.

CodePudding user response：

You should use webSocket in this situation, sever will send message and client (flutter app) will listen to message from server, your current solution is ping the server by REST several times per minute, it maybe overloads the server in some case, e.g you have a lot of client but server resource is limited.

Link document about webSocket here: https://docs.flutter.dev/cookbook/networking/web-sockets

CodePudding user response：

Beside websocket, you can also use SSE (Server Sent Events). But just like websockets, SSE require implementation on both server and client side. And depending on the situation both options may not be viable.