How Recursive Trigger Handling in Salesforce can be done for Upsert Operation?

Hello,

public class RecursiveTriggerHandler{
     public static Boolean isFirstTime = true;
}

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trigger SampleTrigger on Contact (after update){
 
    Set accIdSet = new Set();
     
    if(RecursiveTriggerHandler.isFirstTime){
        RecursiveTriggerHandler.isFirstTime = false;
         
        // Calling Apex Class with Logic
    }
}

Hope this will you.

Thanks.