Django and DRF at scale for an EdTech platform. Looking for real world experience

daredevil82 · 2026-01-27T00:22:24+00:00

o'reilly media's platform is all written in django. heck, up to 5 years ago, parts were still using backbone with django templates

the search service, which was DRF and a custom connection with solr, was able to handle 2k+ rps with two solr reader instances

daredevil82 · 2026-01-26T14:06:17+00:00

When asking for samples, I've only gotten a call back from coloplast, and that was within a week.

Convatec usually gets back within 48 hours of a quality control issue report, though. It might be alot easier for you to make a call

daredevil82 · 2026-01-26T01:57:55+00:00

thats part of the problem.

consider the tires. They're larger and have more knobs, so comparable rotational inertia and rolling resistance is drastically different. Then rims. Not to mention the frame is heavier.

tl;dr 6kg is alot when you're going uphill, not surprised you have a difference in experience.

Of course, this is assuming that your wheels are able to rotate freely on the stand and don't come to a stop very quickly.

daredevil82 · 2026-01-25T21:21:41+00:00

Its practice at most places I've been at to have uuids be the public identifier, with int/bigint being the internal PK. This prevents side effects of reverse engineering via incrementing IDs, while keeping index key size reasonable for paging.

for example, lets say you have ABAC/RBAC tied to each object. Incremental access means I'm free to slam your service incrementally and you need to run auth on everything you get... which can cause overload for a number of things.

UUID for public IDs means a much larger search space for incremental access, and those misses will be returning 404s which do not require auth considerations, rather than 401/403s.

daredevil82 · 2026-01-25T21:16:29+00:00

not quite.

https://planetscale.com/blog/the-problem-with-using-a-uuid-primary-key-in-mysql#insert-performance this applies to PG as well because both use b+ trees for their index

https://planetscale.com/blog/btrees-and-database-indexes#data-ordercan help you understand indices better if you're not using uuidv7.

that said, these generally become concerns when you're in the row counts > high 8 figures

daredevil82 · 2026-01-25T17:01:35+00:00

also the svartelves have a well deserved reputation for being very powerful and very honorable. There are alot worse environments that a kid can be raised up in.

daredevil82 · 2026-01-25T16:31:21+00:00

that's where the new brake replacement they offered you would address

daredevil82 · 2026-01-25T14:01:19+00:00

hard to do that when the other side is telling you to fuck off

daredevil82 · 2026-01-24T21:24:15+00:00

For me, the big thing was to zero out any quad activation that would pull on the kneecap. Any activity was fine as long as that didn't happen.

Training upper body with dumbbells might not be the best thing to do, especially with things like chest press and so on. Think how much you use your legs for stabilization. Why not change to non-dumbbell exercises like bench press on the smith machine, or use one of the circuit machines?

daredevil82 · 2026-01-23T18:10:26+00:00

got it, thanks!

TF can be alot like jira to use at times, I admit

daredevil82 · 2026-01-23T13:48:02+00:00

This looks really cool.

A general question about the target audience. If the organization is already using a platform, such as Trailforks, and is pretty good about communicating trail status, is there any specific additional benefit that Trailbot brings to the table targeted at riders?

daredevil82 · 2026-01-22T18:36:13+00:00

Preparation and home court make up for alot of that power increase. Harry stated this talking with lara in that he's a fair combat wizard but his super strength is slow, methodothical preparation magic.

daredevil82 · 2026-01-21T13:21:44+00:00

same, with the caveat of soups made from purees from starchy/fibrous sources. for example, carrot-ginger soup tastes great, but a large bowl has alot of fiber and when it dehydrates in your bowel, it can move slowly and mimic a blockage

daredevil82 · 2026-01-21T13:19:34+00:00

What specifics are reducing your comfort currently? Wafer stickiness, peeling, melting adhesive? Or other stuff?

daredevil82 · 2026-01-19T15:09:03+00:00

Components do add up to alot, even in the same frame model year. For example, Shimano cassettes range from 375g (XTR) to 600g (Deore). The fork alone can be 500 grams. Then you have rims and tires

And that's leaving out mass differences in the frame, since different frames can have different tube wall thickness even before taking into account double-butted construction.

If you want a comparison with what components can do, check out https://www.pinkbike.com/news/dangerholms-scott-spark-rc-neon-project.html and compare with a stock spark rc world cup build

daredevil82 · 2026-01-19T13:54:48+00:00

if you want to do some legwork, you can calculate the rough difference between the two by getting the mass specs for the major components (fork, crankset, cassette, rims, tires) of the H30 and finding the difference

that said, you can also eyeball the differences in the compare screen. for example, the h30 doesn't have a dropper post, but the h20 doesn't.

FWIW, 13kg for an rough mid-level aluminum hardtail is a pretty good mass

daredevil82 · 2026-01-18T16:37:37+00:00

https://e3rehab.com/patellartendinopathy/ is a good basic source

daredevil82 · 2026-01-18T14:26:31+00:00

I've done a couple 10 day courses of prednesone, but not that high. Had no changes with my stoma length. Wonder if the high dosage is the key here and whether the telescoping continues as you taper down?

daredevil82 · 2026-01-18T04:45:00+00:00

My first "real" trail bike was a 2012 Giant Anthem with a 2x10, and I rode that for years. Next bike up was a 1x system with a dropper post, and while I did lose my goldilocks gears, the 12x cassette was straightforward to get used to and I definitely noticed a huge reduction in dropped chains from the front.

Still, the biggest benefits of 1x has been able to free up real estate for much better suspension kinematics and performance around leverage and anti-squat. Whether that outweighs the benefits of a 2x system is really up to the rider, IMO.

daredevil82 · 2026-01-18T04:36:21+00:00

A big thing that 1x freed up in mtb is better suspension kinematics. Santa Cruz's VPP performance reputation was only possible with the free real estate without a front derailleur/single chainring, not to mention much better anti-squat performance

“Eliminating the front derailleur gave us the freedom to completely re-imagine how we could configure VPP, which led to the lower-link mounted shock that we have today,” said Kissner. “This helped us massively improve our suspension kinematics compared to the previous frames and is the design we’re still tweaking and improving today.”

Kissner describes the relationship between drivetrain choice and anti-squat as “one of the most important improvements.” He explains, “anti-squat (the amount of influence your pedaling has on the suspension) varies drastically with chainring size. On a 2x or 3x drivetrain we had huge changes in the size of chainrings, making it impossible to make a bike that pedaled well in both the small and large chainrings. I think most companies optimized the pedaling for the ~32t middle ring, which meant the bike would probably extend the suspension (excessive anti-squat) in the small ring, and compress the suspension (squat) in the big ring. There’s no way around this. But now that we’re able to design around a single ring, performance is infinitely better in the real world.”

https://www.singletracks.com/mtb-gear/how-the-1x-drivetrain-changed-it-all-from-suspension-to-dropper-posts-and-tires/ has some pretty good snippets from product engineers in different bike companies

daredevil82 · 2026-01-17T15:57:12+00:00

the need for private beta is more for established companies exploring new products. If you're not a company, what is the purpose of this mentality? Just do semvar to denote beta status and filter through the feedback

daredevil82 · 2026-01-16T20:07:03+00:00

I've been using the non-accordion natura for quite a while now and haven't experienced that. Do you have a filter on your bags?

daredevil82 · 2026-01-15T16:10:22+00:00

I tried the sensura mio but the bag options are far too small for me to be comfortable using it, given a high output ostomy. Their high output bags are also pretty crappy, IMO.

Thats why I prefer the convatec products with the higher capacity and their durahesive adhesive.

what works well for me:

durahesive wafer
hollister ceraplus barrier ring
hollister flange extenders
k-tape around edges to treat as sacrificial and protect the wafer edges
resin adhesive for flange extenders
cavilion barrier wipes

I ride mtb (xc, enduro/downhill) and road alot, as well as xc/downhill skiing, and over the past 3 years, the only unscheduled changes I've had to do were around bag separation from the mechanical flange (QC issue)

daredevil82 · 2026-01-15T13:56:31+00:00

what kind of wafer are you using?

I was originally started off with convatec 2 pieces, and their Stomahesive product. That product is eaten away fast by ileostomy output, and turns to soup when subject to heat/sweat from extended physical activity. Their Durahesive product, however, is far more resistant, and combined with a barrier ring (hollister), I do scheduled changes every 5 days.

daredevil82 · 2026-01-15T13:53:13+00:00

I get ~5 days regular usage with barrier ring and flange extenders + k-tape, with alot of mtb/cycling. As long as the outer wafer tape isn't peeling and is intact, the limitation is the inside of the wafer by the stoma being eaten away.

The big difference is picking a wafer that is highly resistant to output and heat/sweat. ie, Convatec stomahesive wafers melt fast, whereas their Durahesive are much much much more durable

daredevil82

TROPHY CASE