page:blueprints:tutoring centers:event registration:next js

Tutoring centers: event registration using Next.js

Summary

A event registration blueprint for tutoring centers built with Next.js on Ample. Domain schema:

Public information: subjects and levels, schedule and locations, tutor qualifications. Kept out of scope until handling is reviewed: minor students and guardian identity, progress reports. Data about minors is sensitive; only group schedules and materials are modeled here. Technical basis verified on Next.js: an optimistic version check and an event row written in the same transaction, a stale update rejected, and a history query over the application-owned events (history=2 conflict=rejected).

Representative Queries

Resource Requirements

Infrastructure Requirements

Compute

Apps run in isolated x86_64 Firecracker microVMs that auto-pause when idle and wake on request; sizes are the priced VM sizes.

Postgres

Managed PostgreSQL 16 runs in its own microVM and is auto-provisioned when an app needs a database and no DATABASE_URL is supplied.

S3-compatible object storage

Buckets are S3-compatible with issued credentials; PutObject and GetObject are verified by canary. Other S3 operations are not verified.

Prerequisites

Workflow Steps

  1. Model the tutoring centers domain: Create the tables course_groups, memberships, sessions, materials, events. Tutoring groups live in course_groups; keep the sensitive classes (minor students and guardian identity, progress reports) out of this schema.
  2. Model sessions with capacity and registrations with status
  3. Register transactionally with a capacity check and an event per registration
  4. Reject stale concurrent updates
  5. Deploy and verify history and conflict handling
  6. Deploy: Run the synchronous deploy once and read the result. Re-running with no change is a no-op.
  7. Verify: Run the pattern self-test(s) from the example (/p/transactional-workflows) and your own acceptance checks for the tutoring centers workflow.

Success Checks

Limitations

Cost Estimate

Components

Next Actions