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27 lines
1.2 KiB
Markdown
27 lines
1.2 KiB
Markdown
---
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title: DNS Discovery
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hide_table_of_contents: true
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---
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Built upon the foundation of [EIP-1459: Node Discovery via DNS](https://eips.ethereum.org/EIPS/eip-1459), DNS Discovery allows the retrieval of an `ENR` tree from the `TXT` field of a domain name. This innovative approach enables the storage of essential node connection details, including IP, port, and multiaddr, using the standardised [ENR format](https://rfc.vac.dev/spec/31/).
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This bootstrapping method allows anyone to register and publish a domain name for the network, promoting increased decentralisation.
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#### Pros
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- Low latency, low resource requirements.
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- Easy bootstrap list updates by modifying the domain name, eliminating the need for code changes.
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- Ability to reference a larger list of nodes by including other domain names in the code or ENR tree.
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#### Cons
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- Vulnerable to censorship: Domain names can be blocked or restricted.
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- Limited scalability: The listed nodes are at risk of being overwhelmed by receiving all queries. Also, operators must provide their `ENR` to the domain owner for listing.
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## Overview
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```mdx-code-block
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import DNSDiscovery from "@site/diagrams/_dns-discovery.md";
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<DNSDiscovery />
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``` |