solidity

Solidity devs:

How possible is it to store a large array to hold a leaderboard onchain?
It would need to be updated as it changes and shifted around.

My gut reaction as that this would be too expensive to make happen.
Is on a layer2 at least.

Or are there any better solutions?

Building /stokefire a mobile strategy game onchain. Run and own poolfish.xyz a calculator for LP providers. Built Potion solo and sold for $300k.

Do you want it on chain for composability or provenance?

If just provenance I’d say just update a hash of the leaderboard on chain.

And lazy composability would then be to expose the leaderboard via oracle and verify against the hash.

Creator of /bot-or-not @harmonybot @yoinker. Contributing to /blitkin & /orange-dao IRL: Building spatial computing for construction @ Resolve YC W15

Neither actually.

Would want it onchain so that onchain logic changes based on your relation to other players on the leaderboard.

"who are the 5 above you and 5 below you" Kind of thing.

You probably can do something elegant with trees as a data structure.
Have a simple linked list and then store the score + next highest and prev lowest with a lookup from user to node.
Then you can go up and down to get above and below. Amending the tree can happen on the client side that says insert node here with an onchain variant check.