Hey guys,

I am writing a staking and locker contract but the apy is placed to be constant
Now the issue is how to store the new stake locks without creating a list of them and looping through them

Rn i am using a struct named stake that is:

struct Stake {
uint256 amount;
uint256 timein;
uint256 timelock;
uint256 reward_multiplier_index;
}

mapping(address=>Stake[]) stake;



now a normal stake ive placed timelock as the same timestamp as timein so it is withdrawable but when user unstakes i will have to loop through a list of stake structs to modify and do changes what is a more efficient way to do it.

the reward multiplier is a list with reward multiplier numbers ive used index cuz ill change the rewardmultipliers later so wont have to them all in stake's

I'd really appriciate a way cuz i think this way gas costly