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43 lines
743 B
Markdown
43 lines
743 B
Markdown
## 🐊 Proxies
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<br>
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### TL;DR Proxies Patterns
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<br>
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#### Transparent Proxy Pattern (TPP)
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1. upgrade logic is stored in proxy itself.
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2. gas-inefficient
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<br>
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#### Universal Upgradable Proxy Standard (UUPS)
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1. upgrade logic is stored in logic itself
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2. gas-efficient
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<br>
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---
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### Unitialized proxy bug
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<br>
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* Developers might leave proxies unitialized - this can be a problem when it leads to changes such as granting ownership to the caller
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* the owners of the contract can upgrade the implementation contract
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* this bug can lead to the self-destruction of the implementation contract (proxy contract is bricked)
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---
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### Resources
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<br>
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* [Wormhole bridge protocol](https://github.com/immunefi-team/wormhole-uninitialized)
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