I have question about the `cacheTtl` field of `KVNamespace.get`’s option. Does the cacheTtl means c

I have question about the

cacheTtl

cacheTtl

cacheTtl

cacheTtl field of

KVNamespace.get

KVNamespace.get

KVNamespace.get

KVNamespace.get’s option.
Does the cacheTtl means cache n seconds start from now, or start from when it is write?

SSmallShen I have question about the `cacheTtl` field of `KVNamespace.get`’s option. Does ...

beelzabub•7/24/23, 5:11 PM

It's from when KV determines to refresh the data from the underlying storage. It's also worth calling out that

cacheTtl

cacheTtl

& expirationTtlexpirationTtl are frequently confused for each other.

LemmoTresto•7/25/23, 10:17 AM

Is there a naming convention for KV namespaces?

Erisa•7/25/23, 11:48 AM

No, you can name them whatever you like

RandomNick•7/25/23, 9:34 PM

HI, I am getting started with workers, and intend to use some KV to store some auth data. I could not find how wise this is security wise. Can KV storage be considered safe to store sensitive data?

kian•7/25/23, 9:41 PM

https://developers.cloudflare.com/workers/learning/how-kv-works/#consistency

How KV works · Cloudflare Workers docs

Workers KV is a global, low-latency, key-value data store. It stores data in a small number of centralized data centers, then caches that data in …

kian•7/25/23, 9:42 PM

If it's critical as well as sensitive, I would always recommend backing up your data to another location.

Even if Cloudflare isn't going to lose your data, it offers no protections against accidental overwrites or malicious actors gaining control & deleting your stuff.

RandomNick•7/25/23, 10:04 PM

it is not critical, and does not need backing up, I have backups. The question is more like, is it securely bound to my workers and my account via cf infra? is it internally encrypted to avoid malicious actor getting the data? Is it bad practice to store auth tokens in there?

kian•7/25/23, 10:06 PM

The linked document covers the encryption aspect

RandomNick•7/25/23, 10:07 PM

Oops my bad, I recognized the image on the link an though it was a page I had already read. I'll read that now. Thank you

kian•7/25/23, 10:12 PM

The only thing about auth tokens is that KV is eventually consistent so if someone revokes a token, it might still be active depending if it’s cached here & there - by default, that should be less than 60 seconds.

RandomNick•7/25/23, 10:31 PM

Yeah I have seen that "eventually consistent" remark. But in my use case, it should not be an issue.

Sameer Ali•7/26/23, 6:27 AM

KV GET failed: 500 Internal Server ErrorKV GET failed: 500 Internal Server Error getting this error again in Asia Region

Justin Garrison•7/26/23, 3:05 PM

is it possible with wrangler kv:key listwrangler kv:key list to dump the key values and metadata too?

Tony Leung•7/27/23, 3:02 PM

should i store JWT jtijti in cloudflare KV? I've heard that KV has high latency on cross region access, which could take 60s to propagate data to other region. My service provide token for users to use in their server, which could be placed in a different region from where the token is generated

Tony Leung•7/27/23, 3:04 PM

Ex, I have a customer generated a JWT in APAC region, they take that token and deploy their app in US WEST region

Noel•7/27/23, 11:03 PM

I spent a good amount of time debugging a stupid mistake, so i'd like to make a feature request: It would be nice if the dashboard marks invisible characters in the key name. (I copied key value pairs from a test namespace to production and in the process i somehow got a tab at the end of my key so the worker couldn't find it.)

TTony Leung should i store JWT `jti` in cloudflare KV? I've heard that KV has high latency o...

Matt Silverlock•7/27/23, 11:31 PM

Can you explain more about what you’re trying to achieve? If you are writing the value for the first time it will be available globally. Updates take 60s. Not fresh writes.

NNoel I spent a good amount of time debugging a stupid mistake, so i'd like to make a ...

Matt Silverlock•7/27/23, 11:31 PM

cc @charlieburnett

RRoca Is there a way to get the id of a local KV namespace running on wrangler via the...

Cyb3r-Jak3•7/28/23, 1:42 AM

What do you mean by the local KV Namespace? The local one isn't a real one and doesn't have an ID

MMatt Silverlock Can you explain more about what you’re trying to achieve? If you are writing the...

Tony Leung•7/28/23, 1:56 AM

oh, if fresh write will make data available globally then it's perfectly fit with my use case. My concern now is the latency when I retrieve the data from KV, and pricing too. My current approach is storing JWT jtijti in KV with a TTL (or cache data in general). jtijti will be retrieved in every requests, so low latency and low cost is a very important. My old implementation on my onprem server is deploying a redis cluster, with each redis instance will sit next to the main service in every region for lowest latency. I only write data once, rarely update it and access it many times in its life time

Tony Leung•7/28/23, 1:59 AM

in the KV document, it said that KV is not a in-memory cache and has significantly higher latency than redis. So storing cache data in kv might not be a great idea...

Unsmart•7/28/23, 2:07 AM

How often do you query this jtijti value? If its often then KV will be great because it caches data in the colo it gets requested from so it will be pretty fast. For me I generally get around ~40-50ms on cache hits iirc.

Or a better option since your customers are deploying into specific locations could be Durable Objects. DOs you can send a parameter telling it where to be created so you can give them an option to select what would be closest to them. And if the DO happens to be created in the same datacenter their request hits its faster than KV but thats a big if the colo they hit has DOs and thats where it gets placed

UUnsmart How often do you query this `jti` value? If its often then KV will be great beca...

Tony Leung•7/28/23, 2:19 AM

I'm querying it in every request and I'm having 40-200 request per minute, so 40-50ms is pretty high tho. I'm also using D1 to store data, which takes 10-50ms to query data, so the cummulative sum of data querying time could be 50-100ms per request, plus internet latency then the response could be 130-300ms. I don't know this is an acceptable latency, but IMO, it's pretty high.

Unsmart•7/28/23, 2:20 AM

I guess I should say the 40-50ms is e2e of the entire worker request and sending it back to the client.

Unsmart•7/28/23, 2:21 AM

no clue what just the kv request time inside the worker is

UUnsmart I guess I should say the 40-50ms is e2e of the entire worker request and sending...

Tony Leung•7/28/23, 2:22 AM

oh okay. So i guess it could only take single digit latency

Tony Leung•7/28/23, 2:23 AM

bc averate latency from anywhere not my local computer to my computer is 20-30ms

JSON•7/28/23, 9:00 AM

I'm using kv to manage the session.

But from today, "error code:500" keeps responding.
Strangely, there is no problem in the local development environment.
kv is being used as an http request. Even if you throw it with postman, it gives you a normal response.

RandomNick•7/28/23, 9:20 AM

Hi, I got an email from CF to inform me that I reached 50% of my free KV tier. DashBoard shows: Which obvious limit did I miss in the free tier. I though I had 100000 operations perfay.

JJSON I'm using kv to manage the session. But from today, "error code:500" keeps resp...

JSON•7/28/23, 9:24 AM

This is just my opinion, but I think what was possible in the local environment was possible because the request was made in Korea.

In Korea, if you don't use Business grade, you will receive requests from other countries when you request them on your PC.

RRandomNick Hi, I got an email from CF to inform me that I reached 50% of my free KV tier. ...

DaniFoldi•7/28/23, 9:24 AM

Indeed, you get 100k/day read operations, but only 1000 write, 1000 list and 1000 delete operations (https://developers.cloudflare.com/workers/platform/pricing/#workers-kv)

Pricing · Cloudflare Workers docs

By default, users have access to the Workers Free plan. The Workers free plan includes limited usage of Workers, Pages Functions and Workers KV. Read …

RandomNick•7/28/23, 9:26 AM

thank you @Dani Foldi , I missed the 1000list limit

JJSON This is just my opinion, but I think what was possible in the local environment ...

JSON•7/28/23, 9:31 AM

I'm spending money on this and I'm debugging it lol

JSON•7/28/23, 11:42 AM

Are you guys fixing this error? It's not even reflected on https://www.cloudflarestatus.com/ , so should I move on to upstash?

Cloudflare Status

Welcome to Cloudflare's home for real-time and historical data on system performance.

JJSON Are you guys fixing this error? It's not even reflected on https://www.cloudfla...

Erisa•7/28/23, 11:46 AM

The best way to get eyes on issues for them to be fixed is through a support ticket (https://dash.cloudflare.com/?to=/:account/support), the help in this community is best-effort and has no guarentee of help or response.

That said, are you able to explain more about the issue? Are you using the Cloudflare API (api.cloudflare.comapi.cloudflare.com) to interact with KV or through a Worker? Does this happen consistently when requested in a specific way or from a specific location? And finally, are you able to share the full JSON output you get from the API? Thanks!

EErisa The best way to get eyes on issues for them to be fixed is through a support tic...

JSON•7/28/23, 11:48 AM

response image
Customers have been complaining that they have not been able to log in for six hours.

The funny thing is it's not a region issue.
Registering kv from other pages functions is normally registered

When I fetch a request to read kv in pages functions that is suddenly not working now with v4 api, this is the only one that gets 500 errors answered.

JJSON response image Customers have been complaining that they have not been able to l...

Erisa•7/28/23, 11:49 AM

Can you share your account ID?

EErisa Can you share your account ID?

JSON•7/28/23, 11:49 AM

It's a sensitive matter, so can I DM you?

Erisa•7/28/23, 11:49 AM

Yes

EErisa Yes

JSON•7/28/23, 11:51 AM

You're in a dm denial state. Please call me first

Erisa•7/28/23, 11:51 AM

My DMs are open, it will be your own settings

Erisa•7/28/23, 11:52 AM

I sent a friend request if that helps

EErisa I sent a friend request if that helps

JSON•7/28/23, 11:53 AM

i sent it

Erisa•7/28/23, 11:53 AM

Thanks

JSON•7/28/23, 11:57 AM

My English is poor, but I will tell you something to refer to

There is only one page function in which 500 errors occur.
Copy the same request as it is, and if you request it in a different environment, you get a normal response.
It worked normally until yesterday.
I can't take any action because the KV Server is experiencing an internal error.

JJSON My English is poor, but I will tell you something to refer to 1. There is only ...

Gytis•7/28/23, 12:02 PM

Maybe 'normal response' is cached in your browser?

I have question about the `cacheTtl` field of `KVNamespace.get`’s option. Does the cacheTtl means c

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