7 min read
Lolo Cab: three ways to ask a vendor's balance, three answers
Backend notes from Lolo Cab — money as an append-only ledger, the readers that disagreed with it, and the idempotency key that was already in the schema.
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#lolo-cab
3 posts
All#astro#aws#concurrency#dev-notes#huggingface#kyc#lolo-cab#mongodb#nlp#nodejs#payments#process#python#react-native#security#seo#smart-trust-meter#sports-pregame#thegrindcalc
4 min read
Lolo Cab: shared-ride seats are a counter, and counters race
Backend notes from Lolo Cab — why check-then-decrement seat counts break under concurrent bookings, and the atomic-update fix.
3 min read
Lolo Cab: DigiLocker KYC is a status machine, not a file upload
Backend notes from Lolo Cab — provider-backed KYC for drivers and vendors, what never goes to the client, and why admin gates on verification state.