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Subscriptions

Subscriptions provide live, streaming queries. When underlying data changes, subscribers receive updates automatically.

Server Required

Subscriptions are long-lived streaming connections and require a running ReifyDB server. They cannot be demonstrated in the browser playground.

Create a Subscription

rql

CREATE NAMESPACE app;
CREATE TABLE app::events { id: int4, kind: utf8 };

CREATE SUBSCRIPTION {
  id: int4,
  kind: utf8
} AS {
  FROM app::events
}

A subscription defines a schema and a query. When data matching the query changes, connected clients receive the updated rows.