[Home](./index.md) > [@snowplow/node-tracker](./node-tracker.md) > [EventStore](./node-tracker.eventstore.md) ## EventStore interface EventStore allows storing and retrieving events before they are sent to the collector Signature: ```typescript interface EventStore ``` ## Properties | Property | Type | Description | | --- | --- | --- | | [add](./node-tracker.eventstore.add.md) | (payload: EventStorePayload) => Promise<number> | Add an event to the store | | [count](./node-tracker.eventstore.count.md) | () => Promise<number> | Count all events in the store | | [getAll](./node-tracker.eventstore.getall.md) | () => Promise<readonly EventStorePayload\[\]> | Retrieve all payloads including their meta configuration in the store | | [getAllPayloads](./node-tracker.eventstore.getallpayloads.md) | () => Promise<readonly Payload\[\]> | Retrieve all pure payloads in the store | | [iterator](./node-tracker.eventstore.iterator.md) | () => EventStoreIterator | Get an iterator over all events in the store | | [removeHead](./node-tracker.eventstore.removehead.md) | (count: number) => Promise<void> | Remove the first count events from the store |