should i store JWT `jti` in cloudflare KV? I've heard that KV has high latency on cross region acces

should i store JWT

jti

jti

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 LeungOP•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 LeungOP•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

jti

jti

in KV with a TTL (or cache data in general).

jti

jti

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 LeungOP•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

jti

jti

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 LeungOP•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 LeungOP•7/28/23, 2:22 AM

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

Tony LeungOP•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.com

api.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?

GGytis Maybe 'normal response' is cached in your browser?

JSON•7/28/23, 12:02 PM

KV request responses are handled by functions(worker), does the browser cache matter?

Gytis•7/28/23, 12:03 PM

I was thinking that browser does not do a request at all, just pulls the cached result but it sounds like this is not the case

GGytis I was thinking that browser does not do a request at all, just pulls the cached ...

JSON•7/28/23, 12:05 PM

Even if you make a different key and read it, it's the same.
The status code is 500 in the first place, but I don't think it makes sense that this is my problem.
Because I haven't modified the code related to this recently and it's a problem that has occurred since today.

JSON•7/28/23, 12:06 PM

I'm using this for session management now and the same domain services are all paralyzed.
I felt for the first time that there was a huge disappointment and lack of safety for KV.
I'm thinking about whether I should change everything to real

upstash

upstash

even now.

Gytis•7/28/23, 12:07 PM

im not sure whats the issue but you should definetelly check logs. My guess its an issue with your code

JJSON I'm using this for session management now and the same domain services are all p...

Gytis•7/28/23, 12:09 PM

I just wanted to say thank you for mentioning upstash, it seems great! I might end up using it myself!!

GGytis im not sure whats the issue but you should definetelly check logs. My guess its ...

JSON•7/28/23, 12:10 PM

Log is all the images above what can I do with that?

Gytis•7/28/23, 12:11 PM

I would expect for log to contain errors?

JJSON Log is all the images above what can I do with that?

JSON•7/28/23, 12:11 PM

If my code is wrong, why does the local or other environment work when it's copied?

Gytis•7/28/23, 12:12 PM

i have no idea, i guess its cloudflare issue

GGytis I would expect for log to contain errors?

JSON•7/28/23, 12:12 PM

If you look at the page function log, the only response is error code 500

GGytis i have no idea, i guess its cloudflare issue

JSON•7/28/23, 12:14 PM

t's a waste of money I paid them

JJSON t's a waste of money I paid them

James•7/28/23, 1:19 PM

There’s a known issue right now with various APIs throwing 500s. It’s being investigated and a fix should be out soon. Sorry for any inconvenience.

Erisa•7/28/23, 1:20 PM

Thanks for the report @TL&D

JJames There’s a known issue right now with various APIs throwing 500s. It’s being inve...

JSON•7/28/23, 1:28 PM

Your response is too slow.
Why didn't you reflect it on cloudflarestatus.com?
It was already over four hours when I discovered it.

I use walkers for a fee, but I can't even inquire about tickets because I use cloudflare as free.
I hope you think about this part and reflect it

JJSON Your response is too slow. Why didn't you reflect it on cloudflarestatus.com? It...

James•7/28/23, 1:41 PM

I'm not a Cloudflare employee, but a community member simply passing along the information as I receive it. I understand this is frustrating, and only apologise for that. For us to escalate issues, we have to see it impacting multiple users, and until very recently, we did not have many reports of this. Once we did, it was escalated, and we got confirmation within minutes which was then relayed to you.

should i store JWT `jti` in cloudflare KV? I've heard that KV has high latency on cross region acces

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