page:blueprints:membership associations:event registration:next js

Membership associations: event registration using Next.js

A event registration blueprint for membership associations built with Next.js on Ample. Domain schema: course_groups (chapter_or_program, start_at, end_at): chapters and programs as groups; memberships (course_group_id, member_email, tier, role, renewed_at): members and roles; sessions (course_group_id, starts_at, title, venue): meetings and events; materials (course_group_id, title, object_key, visibility): member resources; events (seq, record_type, record_id, kind, at): application-owned history written in the same transaction. Public information: about, chapters and benefits, public events, join information. Kept out of scope until handling is reviewed: member directory details, dues and payment records. Member directories are personal data; only public events and member-authorized resources are modeled. 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

  1. Compute

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

  2. Postgres

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

  3. S3-compatible object storage

    • Status: verified
    • Summary: 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 membership associations domain
    Create the tables course_groups, memberships, sessions, materials, events. Chapters and programs as groups live in course_groups; keep the sensitive classes (member directory details, dues and payment records) out of this schema.

  2. Workflow step 1
    Model sessions with capacity and registrations with status

  3. Workflow step 2
    Register transactionally with a capacity check and an event per registration

  4. Workflow step 3
    Reject stale concurrent updates

  5. Workflow step 4
    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.

Command:
ample deploy . --name --public --env S3_ENDPOINT=... --env S3_REGION=... --env S3_BUCKET=... --env S3_ACCESS_KEY_ID=... --env S3_SECRET_ACCESS_KEY=...

  1. Verify
    Run the pattern self-test(s) from the example (/p/transactional-workflows) and your own acceptance checks for the membership associations workflow.

Command:
ample logs --kind build

Success Checks

Limitations

  1. The technical basis (transactional workflows on Next.js) was verified with the pattern fixture; the membership associations schema and workflow are an original design for this blueprint and were not executed as a separate application.
  2. No health, financial, privacy or other compliance claim is made. Member directories are personal data; only public events and member-authorized resources are modeled.
  3. Public content and synthetic examples only until actual data-handling requirements have been reviewed.
  4. Verified on the node-22 template at s-1vcpu-1gb; region, request-duration limits and other sizes are unknown or unverified.
  5. Managed PostgreSQL 16 only; extensions, connection limits and backup or restore procedures are not verified.
  6. PutObject and GetObject with path-style addressing are verified; other S3 operations and CDN cache rules are not.

Cost Estimate

Evidence Summary

Next Actions