How to stop Recursion Trigger Calls In Salesforce

Recursion occurs when the same code is executed again and again. Due to this, an error is populated maximum trigger depth is exceeded.

We can stop this by creating a static variable. With this variable trigger, code execute one time.

Apex Trigger:

trigger ContactTrigger on Conatct(before insert) {

    if(ContactTriggerHelper.runOnce){
        ContactTriggerHelper.runOnce = false;
        // trigger logic
    }   
 
}

Apex Helper Class:

public class ContactTriggerHelper { 
   public static boolean runOnce = true; 
}