Add instructions to migrate to Pyth from Chainlink#250
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| "/price-feeds/pythnet-price-feeds/pull-updates", | ||
| "/price-feeds/pull-updates", | ||
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drive-by: we moved this page and forgot a redirect. There are a couple inbound links to the old URL.
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| # Migrate from Chainlink to Pyth | |||
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| This guide explains how to migrate an EVM application that uses Chainlink price feeds to use Pyth price feeds. | |||
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Chainlink price feeds to use Pyth price feeds
| Pyth provides a Chainlink-compatible interface for its price feeds to make this process simple. | ||
| There are two main steps to the migration: | ||
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| 1. Deploy the `PythAggregatorV3` contract to provide a Chainlink-compatible feed interface. |
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Let's link the the contract first time we mention it.
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| ## Deploy Adapter Contract | ||
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| Chainlink-compatible applications can deploy and use `PythAggregatorV3` in `@pythnetwork/pyth-sdk-solidity` as a replacement for their Chainlink price feeds. |
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It can be written like "You can deploy PythAggregatorV3 as a replacement for Chainlink price feeds"
The context for migration has been set multiple times above, so we don't need to rewrite it IMO.
| ## Schedule Updates | ||
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| Chainlink-compatible applications typically expect on-chain price feeds to update on a schedule. | ||
| When migrating to Pyth, apps may need to schedule these price updates themselves. |
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Shouldn't we highlight this?
Or should we mention this above?
Because this is the biggest change.
| Chainlink-compatible applications can deploy and use `PythAggregatorV3` in `@pythnetwork/pyth-sdk-solidity` as a replacement for their Chainlink price feeds. | ||
| `PythAggregatorV3` is an adapter contract that wraps the Pyth contract and implements Chainlink's `AggregatorV3Interface`. | ||
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| One important difference between Pyth and Chainlink is that the Pyth contract holds data for all price feeds, whereas Chainlink has separate instances of `AggregatorV3Interface` for each feed. |
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This narrative feels better.
"Pyth contract holds data for all price feeds, in comparison to Chainlink, which has separate instances of AggregatorV3Interface` for every feed.
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Add a how-to guide explaining how to use Pyth as a drop-in replacement for chainlink compatible apps.