Titlebook: Ethereum for Web Developers; Learn to Build Web A Santiago Palladino Book 2019 Santiago Palladino 2019 blockchain.ethereum.cryptocurrency.d

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Indexing and Storage,ng logged events, while writes are always performed in the context of a transaction. However, these operations only accommodate for basic use cases. If we want to display aggregate data from the blockchain, querying events client-side quickly falls short. Similarly, if we want to store large amounts

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Yijia Cao,Yong Li,Xuan Liu,Christian RehtanzAfter a not-so-brief interruption about writing smart contracts, we will review in-depth the different ways to connect to the Ethereum network to retrieve data. We will cover different connection methods, as well as patterns for listening to changes, and put it all together in a sample application for monitoring transactions of an ERC20 token.

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