Full Disclosure
This café doesn't exist.
No storefront. No beans. No baristas. What is real: a full commerce, staking, and settlement stack, engineered as if the café were.
> a fictional cafeteria · real engineering
The Fiction
Brewed from scratch, minus the coffee.
There is no address, no lease, no espresso machine. What exists is a production-shaped playground: a real database, a real message queue, a real smart contract on a real (test) chain — orbiting an imaginary counter that never actually pulls a shot.
The café is the excuse. The point was to build something end-to-end and honest about what it is: not a startup, not a product — a complete system, done properly, for its own sake.
The Recipe
How it's built.
-
01 · DOMAIN
Entities and enums — the vocabulary of the café.
-
02 · APPLICATION
Services, DTOs, validation — the recipes.
-
03 · INFRASTRUCTURE
EF Core on PostgreSQL, plus Azure storage, messaging, and email.
-
04 · WEB
Blazor Web App on .NET 10, rendered interactively — the counter.
-
05 · WORKER
A background service consuming order-processing messages — the back room.
dotnet 10 · blazor server · clean architecture · xunit + testcontainers
The Yield
Interest, freshly ground.
One Solidity contract, CafeStakingPool, runs the loyalty program on Sepolia. Stake CAFE,
accrue COFFEE by the second, claim whenever you like.
stake()
Tokens move into the pool, guarded against re-entrancy.
rewardPerToken()
An owner-set annual rate, in basis points, accrues per second against total staked.
claimRewards()
Pending COFFEE transfers out. No lock-up — unstake anytime.
0
% On-chain · Sepolia
0
Days locked · unstake anytime
0
Pool contract · CafeStakingPool
Testnet only — the tokens are as real as the café.
The Pour
Served from the cloud.
$ git push origin main
→ github actions · docker build
→ push · azure container registry
→ deploy · azure container apps
✓ live at cafe.alexisreyna.dev
Container Apps
Consumption plan, running the Blazor app and the worker.
Postgres Flexible Server
The system of record, via EF Core.
Service Bus
Order-processing queue, consumed by the Worker.
Key Vault
Secrets and connection strings, never in source.
Blob Storage
Product imagery and static assets.
Communication Email
Order confirmations and account emails.
0 Bicep modules provisioning the estate