Cloudflare Developers•16mo ago•

23 replies

Can I access KV from snippets ?

ncano•9/10/24, 5:55 PM

you can access KV via HTTP endpoints from Snippets

ncano•9/10/24, 5:56 PM

no bindings though

LindOP•9/10/24, 6:18 PM

@ncano but http endpoints must be on Workers or there is some public api like DNS over HTTPS: https://cloudflare-dns.com/dns-query ?

ncano•9/10/24, 6:20 PM

you can call KV API https://developers.cloudflare.com/kv/api/ from your snippet, given that you authenticate and provide a token that is associated with Cloudflare user that has access to KV

Cloudflare Docs

API | Cloudflare Workers KV

LindOP•9/10/24, 6:21 PM

using api have some additional pricing or only KV pricing ?

ncano•9/10/24, 6:23 PM

https://developers.cloudflare.com/kv/platform/pricing/#frequently-asked-questions

Cloudflare Docs

Pricing | Cloudflare Workers KV

Workers KV is included in both the Free and Paid Workers plans.

ncano•9/10/24, 6:24 PM

in a nutshell, rest API incurs the same costs as using a binding in a worker

LindOP•9/10/24, 6:25 PM

That's exactly what I meant

Thank You!

Nncano you can call KV API https://developers.cloudflare.com/kv/api/ from your snippet,...

Chaika•9/10/24, 6:25 PM

KV API is only in core so not too usable from a latency standpoint from snippets right?

LindOP•9/10/24, 6:25 PM

that a great question, because there is only 5ms

ncano•9/10/24, 6:26 PM

this will have impact on latency, however it shouldn't be too drastic

Chaika•9/10/24, 6:26 PM

well the 5ms is cpu time (it doesn't counting waiting on network i/o), but the 200ms+ the api gives you is less then optimal

Chaika•9/10/24, 6:28 PM

I'm not sure which cores serve the KV API (is it just us, or eu too?), but I get ~250ms for a simple 30kb key via the API from ORD and ~300ms from Japan

Chaika•9/10/24, 6:29 PM

I mean you could just make a worker that uses the KV binding and then fetch your worker from the snippet and get all the nice kv caching although you'd be paying for the worker which is meh

LindOP•9/10/24, 6:36 PM

@Chaika I'm based in EU so this is less than 200ms. What ping do you have using KV bindings in worker(instead of REST API) ?

LLind <@905865275583365161> I'm based in EU so this is less than 200ms. What ping do y...

Chaika•9/10/24, 6:44 PM

If you hit cache you're talking ~5ms from every location (just for the fetch, not including your own latency to the cf colo)

LindOP•9/10/24, 6:44 PM

hmm thats strange that REST is so slow

Chaika•9/10/24, 6:45 PM

well I told you why: It's only running in CF's Core services/core

Chaika•9/10/24, 6:45 PM

CF has a core in us and a core in eu, not sure if that specific service is always running in both or not, but still you have to get all requests through there

Chaika•9/10/24, 6:45 PM

Whereas KV Binding has local colo cache, doesn't even need to connect outbound if it's cached

LindOP•9/10/24, 6:46 PM

so snippet should be also near core

Chaika•9/10/24, 6:46 PM

no, snippets run on edge

LindOP•9/10/24, 6:46 PM

ah okay that the case

Chaika•9/10/24, 6:47 PM

KV Binding: User -> CF Edge -> Runs Worker locally -> KV (if hit cache, return here)
API through Snippet: User -> Cf Edge -> Runs Snippet Locally -> Cf Core (KV API Service) -> KV Service
Example being if you were in Japan KV binding could all run locally, but through snippet always has to go back to core api service, which for Asia Pacific is far away

Can I access KV from snippets ?

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