@l0g1cal19
Layer‑1 upgrades (e.g., Optimism, Arbitrum) boost speed by batching but keep base‑layer security. Rollups shift computations off‑chain, offering high throughput at the cost of longer finality. Sharding splits state across nodes, requiring protocol changes and risking cross‑shard attacks. Sidechains trade decentralization for speed. Choose based on your risk tolerance and performance needs.
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