Zaino currently fetches full blocks and parses them to compact blocks every time a client requests block data. This is very inefficient and access to a local compact block cache or at the very lease an internal non-finalised state is required for scale use. This will be inherited from Zebra when Zaino is backed by the ReadStateService (StateService) but this will still not be the case when Zaino uses its backup RPC backend (FetchService), with zcashd or other future RPC based validators. For this reason we need to implement an internal non-finalised state for FetchService.
NOTE: If compact blocks are not available in the ReadStateService at the time this work is being implemented, StateService will continue parse data internally until the required indexes are available.
Zaino currently fetches full blocks and parses them to compact blocks every time a client requests block data. This is very inefficient and access to a local compact block cache or at the very lease an internal non-finalised state is required for scale use. This will be inherited from Zebra when Zaino is backed by the
ReadStateService(StateService) but this will still not be the case when Zaino uses its backup RPC backend (FetchService), with zcashd or other future RPC based validators. For this reason we need to implement an internal non-finalised state forFetchService.Tasks
FetchServicestruct inZaino-State, initially containingZaino-Fetch's JsonRpcConnector and anon_finalised_statestruct, and implement sync method as a persistent background process.IndexerforFetchService.get_compact_blockmethod toIndexertrait and implement forStateServiceandFetchService.FetchServiceNOTE: If compact blocks are not available in the ReadStateService at the time this work is being implemented,
StateServicewill continue parse data internally until the required indexes are available.