Cloudflare Developers•2y ago

Ty. Again, sorry for not reading through the whole announcement.

Ccj Ty. Again, sorry for not reading through the whole announcement.

Hello, I’m Allie!•4/9/24, 6:50 AM

All good!

cjOP•4/9/24, 7:42 AM

How would pricing evolve for long running browser sessions?

For example, an automated testing browser session + queue. I will only run a single browser session and use a queue to manage my tasks. But in this case a browser session can exist for multiple minutes.

Is it currently possible to run a long running browser session on cf api?

cjOP•4/9/24, 7:44 AM

Pricing for existing headless browser APIs like browserless.io depend on

units

units

per months - where one unit = 30 seconds

Pricing – Browserless

The headless browser platform that scales your automation.

Advany•4/9/24, 9:48 AM

With do's, if you manage it properly, you should be able to use 2 sessions to get as many units as are on the start plan

cjOP•4/9/24, 11:45 AM

(180,000 units * 30 seconds)/ 60 seconds / 60 minutes / 24 hours = 62.5 days
So two browser sessions + a lot of DO million seconds.

cjOP•4/9/24, 11:50 AM

Quick math to run a browser session for a whole month:

Cost Estimate for 1 Month

Browser Sessions: 1 session for the whole month = $0 or $0.1 (if you exceed free tier)

Durable Objects Costs:

Requests

Requests

: Alarm DO every 10 seconds = 259,200 pings / month. The first 1 million pings are free = $0 or $0.03888 (if you exceed free tier) - 259,200 requests / 1,000,000 = 0.2592 million requests * $0.15 = $0.03888

Time

Time

: 30 days * 24 hours/day * 3600 seconds/hour = 2,592,000 seconds

Compute Duration

Compute Duration

: The DO is active for 2,592,000 seconds. Converting to GB-seconds: 2,592,000 seconds * 128 MB / 1 GB = 331,776 GB-s. The first 400,000 GB-s are free = $0 or $4.1472 (if you exceed free tier) - 2,592,000 seconds * 128 MB / 1 GB => 331,776 GB-seconds / 1,000,000 => 0.331776 million GB-seconds * $12.50 = $4.1472

Estimated Total for 1 Month:

$5 (workers paid plan)
$4.28608 (if you exceed free tier)

cjOP•4/9/24, 11:50 AM

vs $200 with browserless.io

cjOP•4/9/24, 11:59 AM

But concurrency is the key here. I don't have a usecase where I need to run a single session for a month - but instead use cloudflare's infra to many handle requests for a product (eg screenshot api). So only after cloudflare let us run 500 concurrent sessions will it be really useful.

Advany•4/9/24, 2:24 PM

you know that you can run current requests on 1 do / 1 browser session? I am easily running 25ish current requests on one browser session. It just opens multiple pages and closes them after its done

AAdvany you know that you can run current requests on 1 do / 1 browser session? I am eas...

cjOP•4/9/24, 2:52 PM

You are already using it in production?

cjOP•4/9/24, 2:54 PM

Are there any limitation on the number of tabs opened? Memory limit or something?

I know there is none stated in the limits page but did you face any issue while in production?

Ccj Are there any limitation on the number of tabs opened? Memory limit or something...

rob•4/9/24, 5:02 PM

Im curious on that also

Ccj You are already using it in production?

Advany•4/9/24, 7:43 PM

I had a hard time crashing it. I set the limit to 25 for myself to be save.

Also using it in production.

I did test it once with 100 to 1000 current pages. Crashed around 200ish.

Advany•4/9/24, 7:44 PM

I did page to pdf and page to screenshot and rxtracting page dom

rob•4/9/24, 9:01 PM

on all 200 ?

jason•4/10/24, 1:19 PM

I don't know whose job this is, but there should be a space in the title

Jadugar_Jaggu•4/10/24, 6:59 PM

Kindly add dark mode on this domain also https://blog.cloudflare.com/ , my eyes are burning

Chaika•4/10/24, 8:53 PM

this is the channel for browser rendering api. The community forums have a generic feedback category

Advany•4/10/24, 9:56 PM

Whats the timeline for expanding the limits for the amount of sessions allowed?

Advany•4/10/24, 9:57 PM

Anyway to request higher limits? Happy to pay!

CChaika this is the channel for browser rendering api. The community forums have a gener...

Jadugar_Jaggu•4/11/24, 3:53 AM

If I execute a Javascript function on a webpage using browser rendering and it will take too long to complete it so in this situation what will be the behaviour of a Cloudflare worker, like it will wait for the completion of that function which is been executed in browser session or it will simply kill itself due to some kind of timeout error or we can leave the browser session open and doing the work and leave the worker?

Sscythe If the browser does not receive a command every minute at least, it will shutdow...

Jadugar_Jaggu•4/11/24, 5:42 PM

interesting , it mean we can force a browser session to stay open as long as we want

dave•4/11/24, 8:49 PM

Did this become an open beta?

James•4/12/24, 1:35 AM

It’s now generally available to all workers paid plans

Vikash•4/12/24, 7:47 AM

Can I connect the same browser in multiple workers? I see the

getRandomSession

getRandomSession

function in the reuse browser example, which filter out the existing connected browser sessions using

connectionId

connectionId

const sessionsIds = sessions
            .filter(v => {
                return !v.connectionId; // remove sessions with workers connected to them
            })
            .map(v => {
                return v.sessionId;
            });

const sessionsIds = sessions
            .filter(v => {
                return !v.connectionId; // remove sessions with workers connected to them
            })
            .map(v => {
                return v.sessionId;
            });

But, in a worker I am just capturing a screenshot using

queue()

queue()

with single page and closes that immediately. So I should be able to re-use the browser in multiple worker as there might be 10-15 pages without any issue I guess in same browser. Or it's limited to single connection only and I will get error if I try to use a browser which is currently in use on any other worker?

Ssc Yes but no eta yet.

Vikash•4/15/24, 10:54 AM

I tried to use the reuse session example to capture screenshot for 100s of url, the

page.goto

page.goto

randomly freeze and worker stops processing any more URL from

queue()

queue()

or 15 minutes

Vikash•4/15/24, 10:55 AM

Vikash•4/15/24, 10:57 AM

even when I have timeout set explicitly in page.goto

const response = await page.goto(url, {
timeout: 15000,
waitUntil: "domcontentloaded",
});

Ssc Check that you're cleaning up resources, eg. closing pages etc. Random freezes s...

Vikash•4/15/24, 11:07 AM

The puppeteer has 30000 ms by default on launch, so is should timeout. instead the worker goes unresponsive for 15 minutes

Ssc Yes but no eta yet.

Advany•4/15/24, 2:11 PM

Any eta for:

Customizing session timeout (i saw a branche for that on github)
Getting more sessions?

Ssc Check that you're cleaning up resources, eg. closing pages etc. Random freezes s...

Advany•4/15/24, 2:34 PM

whats the method to check for memory usage?

Jadugar_Jaggu•4/16/24, 8:52 AM

I think browser.pages() is not able to detect how many pages are open in the current session. Is it a known bug?

Jadugar_Jaggu•4/16/24, 8:53 AM

I have one page which is running currently but when I am executing the browser.pages() on same session its returning me a empty array ( length 0 )

Ssc For 1. Should be in less than a month. For 2. No eta yet

Advany•4/16/24, 11:14 AM

awesome! 1 will help a lot!

Jadugar_Jaggu•4/16/24, 3:58 PM

we implemented a cron trigger in the worker which is using browser-rendering api to execute specific commands to ensure session continuity. However, as shown in the screenshot, the connection that started at 4:42:23 will end at 4:42:25. Just three seconds after the end, the browser closes at 4:42:28, citing idle as the reason.

According to the documentation,

A browser instance gets killed if it does not get any command for 60 seconds, freeing one instance.

A browser instance gets killed if it does not get any command for 60 seconds, freeing one instance.

Brian•4/16/24, 4:36 PM

Im testing the browserless api with the example screenshot worker. I cant get it to work when accessing a map tile url. It seems webgl is not supported by chromium. Has anyone been able to find a workaround for this? My hope is to use a browserless worker to make screenshots of maps for users.

BBrian Im testing the browserless api with the example screenshot worker. I cant get i...

Jadugar_Jaggu•4/16/24, 4:55 PM

may be you can try using Google maps lite mode

https://www.google.com/maps/?force=lite

https://www.google.com/maps/?force=lite

http://maps.google.com/?force=canvas

http://maps.google.com/?force=canvas

Brian•4/16/24, 5:06 PM

Thanks but I'm trying to grab a screenshot of my own tileservice that use maplibre to render vector tiles to the browser. Maplibre uses webgl and when I grab a screenshot of the url I get a white blank screenshot.
I saw others ask about using webgl in browserless workers and it seems it hasnt been solved yet.

Mercury•4/18/24, 9:27 AM

It gives me error

text: 'workers.api.error.no_access_to_browser_worker [code: 10088]'

text: 'workers.api.error.no_access_to_browser_worker [code: 10088]'

Is this still in Private Beta?

Mercury•4/18/24, 11:15 AM

Hi team, I am getting this on screenshot. Any idea how we can resolve this?

Mercury•4/18/24, 11:57 AM

Hi team, I am also not able to render canvas in Browser Rendering.

const sessionsIds = sessions .filter(v => { return !v.connectionId; // remove sessions with workers connected to them }) .map(v => { return v.sessionId; });

Ty. Again, sorry for not reading through the whole announcement.

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