Cloudflare Developers•3y ago

can durable objects not have cron triggers?

DaniFoldi•3/11/23, 6:12 PM

They have something similar called alarms, which are actually more precise, but you have to schedule it every time

Jjohtso can durable objects not have cron triggers?

Hello, I’m Allie!•3/11/23, 6:12 PM

No, but they can have Alarms

HHello, I’m Allie!No, but they can have Alarms

DaniFoldi•3/11/23, 6:12 PM

ha, got you

DDaniFoldi ha, got you

Hello, I’m Allie!•3/11/23, 6:12 PM

Deletes your message so I’m first…

johtsoOP•3/11/23, 6:13 PM

yeah, just would be nice to have the simplicity of cron triggers you could twiddle in the dashboard

HHello, I’m Allie!*Deletes your message so I’m first…*

DaniFoldi•3/11/23, 6:13 PM

cries in non-colored dev expert

johtsoOP•3/11/23, 6:13 PM

curious if it's something that's planned

Jjohtso yeah, just would be nice to have the simplicity of cron triggers you could twidd...

Hello, I’m Allie!•3/11/23, 6:13 PM

I mean, you can pass Cron Triggers into a DO

Jjohtso curious if it's something that's planned

Hello, I’m Allie!•3/11/23, 6:14 PM

Probably not. You can pass them in if you need them, or otherwise build your own with Alarms

johtsoOP•3/11/23, 6:14 PM

get yer hands dirty

Hello, I’m Allie!•3/11/23, 6:14 PM

There’s not really much of a need that doesn’t work there

johtsoOP•3/11/23, 6:14 PM

I'm kind of surprised there aren't more abstractions built on top of DOs

johtsoOP•3/11/23, 6:15 PM

oh wait of course, there's do-taskmanager!

Jjohtso oh wait of course, there's do-taskmanager!

DaniFoldi•3/11/23, 6:18 PM

and do-transactional-outboxdo-transactional-outbox

johtsoOP•3/11/23, 6:20 PM

has anyone made a cloudflare worker / DO resources cheat sheet github repo or something?

johtsoOP•3/11/23, 6:20 PM

with all these things linked

johtsoOP•3/11/23, 6:21 PM

itty-durable, do-taskmanager, do-transactional-outbox..

Ffrankichiro Isn't miniflare part of wrangler? Do I need to install miniflare separately, or ...

Hello, I’m Allie!•3/12/23, 9:03 AM

There are three tiers.

wrangler

wrangler

is the CLI,

miniflare

miniflare

is the system that actually mocks a Workers environment, and workerdworkerd, if you choose to use it, is the actual Workers runtime.

Advany•3/12/23, 9:58 AM

is there like a framework on top of do that can handle spinning of new do instances when limits are reached?

I want to save json objects inside of DO to be quickly available during requests. If I want to store like couple 1000 of json objects inside one DO (one do per client). Would I store everything in one object like this.configs = {} or is there a more efficient way of doing it?

Ffrankichiro So… getting DO to work with Pages just needs two CLI flags, but getting DO to wo...

Hello, I’m Allie!•3/12/23, 10:14 AM

No, I was just explaining what the different parts did. To use a DO with Workers, all you need is a

wrangler.toml

wrangler.toml

johtsoOP•3/12/23, 12:38 PM

"We do plan on improving the lifecycle management of objects soon, and auto-expiration is very likely to be part of that." saw this in a forum post from 2 years ago, did anything happen on this front?

Jjohtso "We do plan on improving the lifecycle management of objects soon, and auto-expi...

Hello, I’m Allie!•3/12/23, 12:39 PM

Can you link the post in question?

johtsoOP•3/12/23, 12:39 PM

https://community.cloudflare.com/t/durable-objects-larger-storage-limit-per-object-time-invalidated-storage/222156/13

Cloudflare Community

Durable Objects - larger storage limit per object + time-invalidate...

Not quite. The Durable Object is actually a special worker instance routed to by name/ID that has access to its own in-memory state and persistent state, the latter of which is exposed via a key-value interface. We do plan on improving the lifecycle management of objects soon, and auto-expiration is very likely to be part of that. I don’t have a...

johtsoOP•3/12/23, 12:40 PM

I guess this was before alarms

johtsoOP•3/12/23, 12:40 PM

And now alarms are basically the tool for all lifecycle related things?

Jjohtso I guess this was before alarms

Hello, I’m Allie!•3/12/23, 12:41 PM

This is probably the answer, from the thread:

You can build a TTL using alarms. Whenever your object is accessed, you would use setAlarm()setAlarm() to set the alarm time to Date.now() + timeoutDate.now() + timeout. There is only one alarm per object, so each call to setAlarm()setAlarm() replaces the previous alarm with the new alarm time. When that time is reached, the alarm handler will be invoked. In your alarmalarm handler, you would use storage.deleteAll()storage.deleteAll() to delete your object.

Since it’s possible to build TTL using alarms, we probably won’t be adding a separate TTL feature.

- Kenton

johtsoOP•3/12/23, 12:45 PM

Ah well spotted

johtsoOP•3/12/23, 12:46 PM

I guess better that energy is put towards stuff that can't be done in user land

SSubh Hey team, I removed one DO call and one Queue call, my api response time down fr...

Larry•3/12/23, 6:28 PM

I don't think you provided enough details to make a full diagnosis and even if you did, I have no experience with queues and I'm far from knowing all the ins and outs of DO performance. One wild ass guess though... do you use env.MY_DO_NAMESPACE.idFromName(name)env.MY_DO_NAMESPACE.idFromName(name)? Those require a global lookup on object creation and should be avoided.

johtsoOP•3/13/23, 1:12 AM

just found this too https://github.com/ticket-bridge/hyper-durable

johtsoOP•3/13/23, 1:14 AM

the extra layer of abstraction it proposes makes my head hurt though

can durable objects not have cron triggers?

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