Any way to get the Redis String sink to create other data types in Redis (hash etc)

[conroyd-ohsu-edu]

Hello,
I set up a redis string sinc, and got it working in terms of creating either single key:value or key:jsonvalue as string types.

I'm wondering if there's any way via transform or routing functions to get redis to create the data as a hash type, or the native "json" type instead of "string".

Thanks for any help,
Dan

[dosubot]

Hi @conroyd-ohsu-edu! I'm Dosu and I’m helping the sequin team.

Hey Dan, currently there's no way to write Redis Hash or JSON types through Sequin's Redis sink. The Redis String sink always uses SET/DEL commands, and the Redis Stream sink always uses XADD — these are hardcoded based on the sink type [1]. Transform functions can shape the value being written (e.g., selecting specific fields or restructuring the JSON payload), but they cannot change the underlying Redis command or data structure [2].

So to summarize:

• Transforms → control what data is stored, not how it's stored
• No config option exists to switch to HSET or JSON.SET
• Only String (SET) and Stream (XADD) data types are supported today

As a workaround, you could store JSON-encoded strings (which the sink does automatically for map/object values) and handle deserialization in your consuming application. But if native Redis Hash or JSON types are important for your use case, this would need to be a feature request for the Sequin team to consider adding a new sink type (e.g., "Redis Hash Sink" or "Redis JSON Sink").

To reply, just mention @dosu.

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