Oh yay, I'm pleased with this! I hope it works out well!
stale-while-revalidate is an HTTP caching feature that gives us the ability to still serve relatively static content like item pages ASAP, while also making sure users generally see updates quickly.
The trick is that we declare a period of time where, you can still serve the data from the cache, but you should _then_ go re-fetch the latest data in the background for next time. This works on end users and on the CDN!
I've scanned the basic wardrobe and homepage stuff and brought them up-to-date, and gave particular attention to the item page, which I hope can be very very snappy now! :3
Note to self: Vercel says we can manually clear out a stale-while-revalidate resource by requesting it with `Pragma: no-cache`. I'm not sure it will listen to us for _fresh_ resources, though, so I'm not sure we can actually use that to flush things out in the way I had been hoping until writing this sentence lol :p
So, I ran into some weird Apollo behavior, and was hoping it was a bug that the upgrade would fix. It didn't! But it seems to still run the site fine, so, okay, new version, neat!
Idly wondering if it's time to start adding some basic e2e tests, to validate updates like this...
My main reason for adding this now is that I'm getting some scattered reports of things not displaying correctly, and I want to start gathering some browser data on that...
I recently confirmed that animations work on iOS (at least one did!), which was going to be my guess of what was breaking...
I took out virtualization for now too, I wanna see how this non-Chakra UI version, with fewer nodes and no tooltips etc, performs on large lists in production.
Looks like there was some kind of runtime conflict when running @emotion/css and @emotion/react at the same time in this app? Some styles would just get clobbered, making things look all weird.
Here, I've removed our @emotion/css dependency, and use the `<ClassNames>` utility element from `@emotion/react` instead. I'm not thrilled about the solution, but it seems okay for now...
...one other thing I tried was passing a `css` prop to Chakra elements, which seemed to work, but to clobber the element's own Emotion-based styles. I assumed that the Babel macro wouldn't help us, and wouldn't convert css props to className props for non-HTML elements... but I suppose I'm not sure!
Anyway, I don't love this syntax... but I'm happy for the site to be working again. I wonder if we can find something better.
Another longshot attempt to fix the prod-only emotion bug for free :p
This should be a very easy upgrade, bc I don't think we depend on the minor stuff that had breaking changes.
I'm naively hoping that this fixes the issue with Emotion/Chakra styles that only shows up on prod…
We've had an issue with prod-only bugs before, and it was due to a compiler bug re comments in JSX. I'm wondering if maybe one of our deps now has the same or a similar bug? and if maybe upgrading react-scripts will upgrade webpack, which might fix it?
It's a bit of a longshot, but it's a good upgrade to do anyway, so let's see if we get lucky!
Also, react-scripts 4 has Fast Refresh built in, so we can remove our overrides that added it!
The AMFPHP gateway's json.php endpoint has always had a problem parsing pets whose names start with digits… I've dug into it before, and checked again today, and there really is just no way around it: d584b58e95/core/json/app/Actions.php (L43)
And there aren't any reliable AMFPHP Node libraries out there to make the actual native AMF call.
Buuuut! In today's investigation, I noticed the xmlrpc.php endpoint for the first time. And, wouldn't you know it, there's //great// reliability for something as enterprise-standard as that!
So here, I've switched over to using an xmlrpc client library, which simplifies our calling code //and// makes number pets work correctly 😁 I wouldn't have done it just for the simplification, I think bringing in a library is net more complexity… but getting this finally right is a big relief.
We download the schema from prod, and omit real data, but I didn't notice that we were still pulling the metadata of the auto increment counter for IDs! Now, we scrub that from the schema file we save.
Boom, now we can also run a clean MySQL test db on each test that wants it :)
the test I wrote as a sample is currently marked `it.skip` because it's not passing yet!
I'm using my first ever MySQL Store Procedure for clever cleverness in caching the modeling query!
I realized that checking for the latest contribution timestamp is a pretty reliable way of deciding when modeling data was last updated at all. If that timestamp hasn't changed, we can reuse the results!
I figured that, because query roundtrips are a bottleneck in this environment, I didn't want to make that query separately. So, I built a MySQL procedure to do the check on the database side!
In this change, we cache the zones table as part of the JS build process. This keeps the database as our source of truth, while aggressively caching the data at deploy time.
See the new README for some rationale!
I tested this by pulling up dev Honeycomb, and observing that we no longer run db queries to `zones` in the new traces for the wardrobe page. (It's a good thing we did it this way, because I noticed some code in the server that was still loading the zone anyway, and fixed it here!)
This reverts commit 0f7ab9d10e.
The Production Vercel deploys don't seem to like how I did this build trick, even though the Preview deploys seem fine with it 🤔 Reverting for now, sent a message to Vercel support.
Just gonna bulk load all those manifests into the db, and then that should make most loads notably faster by removing the net request! 🤞
We'll still load manifests inline sometimes, but only the first time anyone pulls up the layer in impress-2020. After that, it should be cached forever!
I noticed that, while looking up zone data from the db is near instant when you're on the same box, it's like 300ms here!
In this change, we start downloading zone data into the build process. That way, we can have a very fast and practically-up-to-date cache (I'm not sure I've changed it in many years), while being confident that it's in sync with the database source of truth (for things like join queries).
I had upgraded to a prerelease version of chakra-ui recently, and there was a bug that broke the "toast" message when you like, submit a bad pet name! It looked… very bad 😂
Now things look good again!!
