@gregbrimble Does the separated Routes -> workers feature do the same thing functionally as well?
@gregbrimble Does the separated Routes -> workers feature do the same thing functionally as well?
Gi.e. is there an optimization path to be had today on my end?
GAbsolutely. But bear in mind folks, that this is no worse than what Workers Sites does today. We'll absolutely be trying to figure out when we can know the request isn't anything functions-y, but we just don't have the answers right now.
Jmakes sense
IYou mean deploying a separate Worker?
GNormal Workers will only be invoked if the incoming request matches the route you set.
GBut seriously, if you're trying to use functions and are concerned about that limit, we'll just raise it for you!
GDefinitely don't want that being a concern for you trying out functions and giving us vital feedback 
Ger, to be a little more specific (thank you for answering on your weekend!) - with regular workers Routes, do all of those, from a "total size of isolate" perspective get compiled down the same way? and even with the goal to shrink cold starts, is there a benefit today to, with multiple routes, splitting out those workers?
Gwhat got me asking about that was how pages functions works today under the hood.
Gis that a generalizable model, I suppose.
GI feel like I'm generating out some big isolates locally, but maybe not.
Jassuming I have a pages function at
functions/api/lookup.js/api/lookupOh, no. Normal Workers are very much their own thing, and they aren't combined in any funky ways whatsoever.
G
ITechnically it's the opposite, the more you combine, the less chances the Worker is cold. But cold starts aren't really that big of an issue on paid plans, if at all.
GOH that's a fair point. and yeah, but as we're looking at moving over, we're pulling in some large WASM bits - hopefully eventually we can drag those out from R2, but we're early in this process.
IThe optimization is, the bigger it gets, the more time it takes to parse and execute (not much, it's still V8 and it's very fast), but a 1kB worker vs. a 1MB worker has different parse times.
GIt's what HTMLRewriter was built for, but you can definitely do it yourself if you prefer:
I-> HTMLRewriter.
GHTMLRewriter will give you better performance.
IAlso, note to everyone. The employee here is @gregbrimble, I'm not
GI'd be happy to chat about how best to use HTMLRewriter if you've got a specific example of problem you're trying to solve
Gtotally, I'm trying not to use the embedding of v8 we've written at my startup unless it's on our clients' hardware (so basically, move our backend over to workers if we can), i've been deep in this "hell" (not really hell, but it's intricate obviously)
Gthe clarification there suggests though for us I should have a separate API set of workers from what we would do with pages for the auth/etc parts of the service.
G@gregbrimble form submitted (among many others), thank you for answering on your weekend.
GIf your site has static assets, and you're wanting to deploy everything together, then full-stack Pages is what I'd recommend going with.
If it makes sense for your application, stick with the
If it makes sense for your application, stick with the
functions_worker.js@gregbrimble that makes sense, thank you.
IThe docs for
wrangler@betabetaIf you need stability though, Workers have been around since (I think) 2017, so are a lot more mature than the beta Pages functions
Gnpx wrangler pages dev --helpoh yeah, that I'm familiar with! just for the first time this has all come together in a way I think we can fully put something together and drop a crap ton of tools. nice work.
GCool. You want that available on the homepage or on
/weatherAlrighty, so you'll need a
functions/index.ts or functions/index.js file, and yeah, we can use HTMLRewriter for it.GIn your static assets, I'd create a placeholder of where you want this content to appear.
GAnd we'll target #weather with HTMLRewriter.
GGUntested, and just written by hand in Discord, but that should pretty much be it.
GMore about the selectors available here: https://developers.cloudflare.com/workers/runtime-apis/html-rewriter#selectors
GCould also do it with async handlers: https://developers.cloudflare.com/workers/runtime-apis/html-rewriter#async-handlers
