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Published 20 hours ago • verified publisher icon nats-io

Key-value storage, Does the key support TTL?

Open hydaizd opened this issue 2 years ago • 27 comments

Feature Request

In the key-value storage.Does the key support TTL? Like Redis, and can listen for expiration events.

Use Case:

Proposed Change:

Who Benefits From The Change(s)?

Alternative Approaches

hydaizd avatar Jul 08 '22 10:07 hydaizd

At the moment only a per-bucket TTL

ripienaar avatar Jul 08 '22 10:07 ripienaar

We do have plans to add in the ability to listen for when a message is removed from a stream by the system.

derekcollison avatar Jul 08 '22 10:07 derekcollison

We do have plans to add in the ability to listen for when a message is removed from a stream by the system.

Which version is planned for this feature?

hydaizd avatar Jul 11 '22 00:07 hydaizd

We may get it in the next release which is 2.9 and was scheduled for this last week but we have extended its beta testing phase so a few more things, including this one may make it in.

derekcollison avatar Jul 11 '22 03:07 derekcollison

@derekcollison Any update on that? Also, Is the plan to support TTL for a key like @hydaizd suggested or just to listen for when a message is removed?

herzaso avatar Aug 15 '22 10:08 herzaso

We eventually want both.. However these have not been the highest priority items for 2.9 release, but still seeing what we can do..

derekcollison avatar Aug 15 '22 18:08 derekcollison

Hi, is there any plan for having per-key TTL in the near future?

I would like to be able to both set a different TTL per key and listen for TTL expiration events.

pcsegal avatar Jan 28 '23 19:01 pcsegal

We have been considering Get() refreshing a TTL. No current plans to allow arbitrary TTLs.

And yes we have plans to allow for system removal events to be observed in a watcher at some point.

What is you use case?

derekcollison avatar Jan 28 '23 19:01 derekcollison

For my particular use case I'm using it to store network information in the same bucket. Some keys are ephemeral data that is easy to TTL so that it cleans up stale entries, but others are long lasting and may not be updated from network device streams. Supporting TTL (and other header metadata) at the key or even subject level would be 🔥

jarrodb avatar Jun 02 '23 17:06 jarrodb

Unless a large customer wants this we have no plans atm, but are considering TTL refresh on a get as mentioned above.

derekcollison avatar Jun 02 '23 18:06 derekcollison

Any updates please?

aleyrizvi avatar Mar 12 '24 07:03 aleyrizvi

A perfect use case with TTL would be to replace redis as a session storage for ssr web apps.

aleyrizvi avatar Mar 12 '24 07:03 aleyrizvi

@aleyrizvi its on the short term road map, so hopefully not too long before we support that.

ripienaar avatar Mar 12 '24 07:03 ripienaar

Perfect Thanks @ripienaar We are replacing whole messaging stack with nats in testing environment. Kafka, Redis and SQS/SNS.

aleyrizvi avatar Mar 12 '24 07:03 aleyrizvi