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21 lines
1.3 KiB
Markdown
21 lines
1.3 KiB
Markdown
# How it works?
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### Setup
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1. A ÐApp requests `Subspace` to track an event, property, or balance.
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2. `Subspace` creates a observable for that event, and a web3 subscription to retrieve events from the chain
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3. The ÐApp subscribes to the observable to receive events.
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### Receiving events
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Depending on the filter parameters used to track the events, once an event is found, it is stored in `localStorage` and it is also pushed to the observable which delivers it to the ÐApp subscription.
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### Tracking already known events
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After restarting the ÐApp, either by executing it again in case of a console application or refreshing the browser the behavior of `Subspace` will change:
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1. The Dapp will request `Subspace` to track an event it already knows, creating an observable and subscription for that event
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2. It will retrieve events that were previously stored in localStorage and deliver them to the DApp subscription, avoiding having to query the chain for the old events again.
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The web3 subscription created previously will start from the last known block instead of beginning from scratch. New events will be delivered normally from this step
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