I more than a dozen App Engine apps (using cloud datastore and standard (not 
flex) GAE), and in my experience, the only non-negligible costs are:

1. Instances
2. Datastore reads

Instances tracks your request rate. For example, I have a very traditional 
web/db python app, and it usually has about 1 F1 instance per 0.1 requests/sec. 
(So if the request rate reached 0.5rps, then I'd have 5 instances.) This app 
has several hundred daily users, and it almost never needs more than one 
instance. (The first instance is free.) The only time my request rate goes up 
is when a bot ignores the crawl-delay in my robots.txt, or when somebody's 
calendar widget goes bonkers and starts hammering my ICS handler. I have alerts 
set up against budget, so when this happens I can investigate and block them 
with a firewall rule.

As for datastore reads, that's ridiculously hard to predict. It depends so much 
on what your app does, and how aggressively you cache frequently-accessed 
stuff. But looking at all my apps together, instances are usually half the 
bill, and datastore reads is the other half. So here's a quick estimator for 
monthly cost, based on my experience.

$ = 2 * ( ( floor(10 * RPS) - 1 ) * $36 )

RPS is requests per second, and you are probably over-estimating that by an 
order of magnitude.

-Joshua

> On Dec 7, 2020, at 5:15 PM, Stesca com <[email protected]> wrote:
> 
> I am looking into the Google AppEngine for deploying one application. The 
> price calculator is painting a very scary picture, so I decided to ask this 
> here.
> 
> My question is from all of you who have deployed their applications onto the 
> AppEngine and have load from moderate to heavy and the instances run 24/7. 
> 
> What is your average cost per month :
> Only AppEngine
> Full solution with Cloud SQL, Storage & Firebase etc.
> I would highly appreciate your help.
> 
> 
> -- 
> You received this message because you are subscribed to the Google Groups 
> "Google App Engine" group.
> To unsubscribe from this group and stop receiving emails from it, send an 
> email to [email protected] 
> <mailto:[email protected]>.
> To view this discussion on the web visit 
> https://groups.google.com/d/msgid/google-appengine/536027e1-7f1c-4281-a1d6-14cfd2357da0n%40googlegroups.com
>  
> <https://groups.google.com/d/msgid/google-appengine/536027e1-7f1c-4281-a1d6-14cfd2357da0n%40googlegroups.com?utm_medium=email&utm_source=footer>.

-- 
You received this message because you are subscribed to the Google Groups 
"Google App Engine" group.
To unsubscribe from this group and stop receiving emails from it, send an email 
to [email protected].
To view this discussion on the web visit 
https://groups.google.com/d/msgid/google-appengine/881BBC18-C88A-43ED-9E7F-6FAC00990EF3%40gmail.com.

Reply via email to