First time and during refresh only API call should call and give response

API call should get called in home page during first time page load and during refresh, If navigate from other page to home page, API response should not get update. give some idea how to handle this

I have writing the code like below, and it is not working as expected

Thanks

Example in home.component.ts

ngOnInit() {
this.Service.IpnValue().then(ipn => this.userIpn = ipn);
this.getLoggedOnTime(this.Ipn);
}



getLoggedOnTime(Ipn: string): void {
this.ervice.getUserLoggedOn(Ipn).subscribe(
(response) => {
this.lastLoggedOnTime=response.code;
console.log('User logged on:', this.lastLoggedOnTime);
},
(error) => {
console.error('Error logging on user:', error);
}
);
}

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