/ doc / tocNamespace / ARCCore / ClientUpdatePosition / __TOCDet / Attribute / LongDescription

LongDescription

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= 0x000D0x000ATODO: Note how we assume that if we have multiple outgoing connections, that is, if we0x000D0x000ATODO: have multiple CoreDB's to choose from, they are all compatible regarding clientUpdateStatus.0x000D0x000ATODO: This would probably not be the case with how clientUpdateStatus is built up today0x000D0x000ATODO: (Apr 2020) with filename + index.0x000D0x000ATODO: Consider adding timestamp, actual property line or similar, in order for different CoreDB instances to more TODO: accurately decide from where to 'pick-up' from when receiving a new incoming connection with a subscription request.TODO: OR, alternatively, ensure that CoreDB instances coordinate among themselves so that they always have the exact same TODO. storage-layout (having a master instance at any given time for instance).0x000D0x000A0x000D0x000ATODO: If we add timestamp, it can then be up to the client to keep track of it, by 'listening' to Timestamps / 'Heartbeats' inserted in the TODO: property stream. The client can then transmit it to the server, as a backup, in case the ordinary filename + index TODO: information makes no sense. Using only Timestamp would of course lead to some overlap (duplicate property stream lines being sent), TOOD: since it is probably quite coarse.0x000D0x000ATODO: Other ideas for keeping clients correctly in sync:0x000D0x000ATODO: Server can inject the current position at regular intervals in the property stream. This serves the same purpose as injecting a TODO: Timestamp / 'Heartbeat' but the position becomes exact instead of approximate. When the client understands that there is someTODO: corruption present, it can look for the last such value, delete stored data after that position, and update from server from this TODO: exact known position. (actually the client can inject the position itself, since it receives the position with any value sent)

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