feat: add healthchecks (#1187)

packages/redis/src/index.ts

@@ -1,6 +1,6 @@
 import { createListChannel, createQueueChannel, createSubPubChannel } from "./lib/channel";
 
-export { createCacheChannel, createItemAndIntegrationChannel, createItemChannel } from "./lib/channel";
+export { createCacheChannel, createItemAndIntegrationChannel, createItemChannel, handshakeAsync } from "./lib/channel";
 
 export const exampleChannel = createSubPubChannel<{ message: string }>("example");
 export const pingChannel = createSubPubChannel<{ url: string; statusCode: number } | { url: string; error: string }>(

packages/redis/src/lib/channel.ts

@@ -260,3 +260,7 @@ export const createQueueChannel = <TItem>(name: string) => {
     },
   };
 };
+
+export const handshakeAsync = async () => {
+  await getSetClient.hello();
+};