GraphQL in Web3: Building a Decentralized API
summary
Demo builds a subgraph that indexes Ethereum token metadata using The Graph hosted service, React and the eth web3 stack and exposes it over GraphQL. It parses IPFS metadata, listens to the Transfer event, sets a start block instead of indexing from 14,525,770 blocks ago, and implements resolvers as assemblyscript mappings that save entities to the Graph node. Initialization, schema, manifest and deploy commands are shown; deploy is prepared but not executed live.
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chapters (8)
- 0:00Start
- 1:41Graphql and Web3
- 2:57Public Ledger
- 4:49Permissionlessness
- 5:50Graphql
- 9:21Indexing
- 12:09Developing a Sub Graph
- 20:55Assembly Script Mappings
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