Sure!
It's QR-based, so customers create an account, load money onto their account, then show their QR code to vendors who scan it to charge their account. We also provide plastic cards (think: gift card) for people who don't want to use their phone but we see 80%+ of people interact completely on their phone/online. We have an app and website (same codebase, Quasar framework) and for in-person payment (entry, bar) we provide iPads with connected CC readers.
My best advice is this: your hardest challenges will not be technical in nature. The hardest part is the equipment, dealing with customers, hand-holding the festival organizers. I don't say any of that as some gross thing or bad thing, just reality. In fact, I think I've succeeded larged based on the in-person aspect (We travel to the event and are on-site for the event) and being the "I have all the answers for your festival payments"-person. Rolling with the punches is a huge part of it.
The whole thing runs on AWS Lambda with a postgres DB from Neon.tech. I'll be honest, it's incredibly over-architected, the whole thing could run a a couple (or even 1) servers as a traditional NodeJS app without issue (and with less complexity) but I used this project as learning experience and a chance to try our some technology I was interested in. Lambda is incredibly cool and I think I might have one of the best use-cases for it (incredibly spikey load: no traffic for 9 mo, tiny traffic for presales for 1-2 months, 1 month with higher sales, then 1-2 days of the event with crazy sales) but the debugging story isn't the best. SST makes it 10000x better than anything else I've tried and the developer experience is bar-none for writing lambdas but all the other crap (CloudFormation, logs, monitoring, etc) is so much overhead. If I was writing this again today I'd probably look at something like NestJS but I won't let myself re-write the code (again) without a pressing reason and if I need to spend time anywhere it's sales/marketing.
Here is my, crappy, "marketing" website: https://grubbux.com/
It's QR-based, so customers create an account, load money onto their account, then show their QR code to vendors who scan it to charge their account. We also provide plastic cards (think: gift card) for people who don't want to use their phone but we see 80%+ of people interact completely on their phone/online. We have an app and website (same codebase, Quasar framework) and for in-person payment (entry, bar) we provide iPads with connected CC readers.
My best advice is this: your hardest challenges will not be technical in nature. The hardest part is the equipment, dealing with customers, hand-holding the festival organizers. I don't say any of that as some gross thing or bad thing, just reality. In fact, I think I've succeeded larged based on the in-person aspect (We travel to the event and are on-site for the event) and being the "I have all the answers for your festival payments"-person. Rolling with the punches is a huge part of it.
The whole thing runs on AWS Lambda with a postgres DB from Neon.tech. I'll be honest, it's incredibly over-architected, the whole thing could run a a couple (or even 1) servers as a traditional NodeJS app without issue (and with less complexity) but I used this project as learning experience and a chance to try our some technology I was interested in. Lambda is incredibly cool and I think I might have one of the best use-cases for it (incredibly spikey load: no traffic for 9 mo, tiny traffic for presales for 1-2 months, 1 month with higher sales, then 1-2 days of the event with crazy sales) but the debugging story isn't the best. SST makes it 10000x better than anything else I've tried and the developer experience is bar-none for writing lambdas but all the other crap (CloudFormation, logs, monitoring, etc) is so much overhead. If I was writing this again today I'd probably look at something like NestJS but I won't let myself re-write the code (again) without a pressing reason and if I need to spend time anywhere it's sales/marketing.
Here is my, crappy, "marketing" website: https://grubbux.com/