**Delay between write and read** SpiceDB #spicedb

**Delay between write and read**

Fingineering

04/22/2025, 12:09 PM

Delay between write and read We have a SpiceDB with Spanner datastore running on K8s. Version 1.42.0 I observe the following behaviour: When I write a relationship

zed relationship create

an then check permissions

zed permission check

it takes approx 5 - 10 sec until I get HAS_PERMISSION. The behaviour I would like to observe is that it takes something close to a second at best even less. I think I understood that it has to do with the hotspot caching and the quantization intervals. But I don't get which parameter I have to set, to make it work "faster"? Thanks for helpful hints!

vroldanbet

04/22/2025, 12:49 PM

👋This is by design. If you want to "read your writes", you have to fetch the zedtoken from

zed relationship create

and pass it to

zed permission check

vroldanbet

04/22/2025, 12:50 PM

We do not recommend making the quantization window smaller, as it means you'll be having more cache misses and loading more from the datastore

Fingineering

04/22/2025, 2:01 PM

Ok, hmm and where do I stuff this token in the python library? Am I right, somehow in the context of the CheckPermissionRequest? Do you have an example?

yetitwo

04/22/2025, 2:48 PM

Copy code

py
    resp = await maybe_await(
        client.CheckPermission(
            CheckPermissionRequest(
                resource=post_one,
                permission="view",
                subject=emilia,
                consistency=Consistency(at_least_as_fresh=ZedToken(token="some_token")),
            )
        )
    )

yetitwo

04/22/2025, 2:48 PM

yes, it's one of the arguments

Fingineering

04/22/2025, 2:49 PM

Thank you @yetitwo

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