* initial naive implementation
* Update pkg/services/store/entity/sqlstash/sql_storage_server.go
Co-authored-by: Igor Suleymanov <radiohead@users.noreply.github.com>
* tidy up
* add action column, batch watch events
* initial implementation of broadcast-based watcher
* fix up watch init
* remove batching, it just adds needless complexity
* use StreamWatcher
* make broadcaster generic
* add circular buffer to replay recent events to new watchers
* loop within poll until all events are read
* add index on entity_history.resource_version to support poller
* increment r.Since when we send events to consumer
* switch broadcaster and cache to use channels instead of mutexes
* cleanup
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Co-authored-by: Igor Suleymanov <radiohead@users.noreply.github.com>
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