How Data Stays Fresh
- Once initialized, Drizzle instantiates
web3 and our desired contracts, then observes the chain by subscribing to new block headers.
- Drizzle keeps track of contract calls so it knows what to synchronize.
- When a new block header comes in, Drizzle checks that the block isn't pending, then goes through the transactions looking to see if any of them touched our contracts.
- If they did, we replay the calls already in the store to refresh any potentially altered data. If they didn't we continue with the store data.