Here is a simple heuristic for avoiding most tombstones when the load factor isn't too high: https://arxiv.org/pdf/1808.04602.pdf https://arxiv.org/pdf/1808.04

Here is a simple heuristic for avoiding most tombstones when the load factor isn't too high: https://arxiv.org/pdf/1808.04602.pdf https://arxiv.org/pdf/1808.04602.pdf