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Bootcamp

A two-week sprint to be production-ready with GraphQL - schema design, resolvers, performance, security.

Bootcamp plan

EXAMPLE
# GraphQL bootcamp - 10 working days

Day 1 - Tooling: graphql-yoga, Apollo Server, codegen, VS Code GraphQL extension.
Day 2 - Schema design: types, interfaces, unions, scalars; nullability strategy.
Day 3 - Resolvers + context: per-request DataLoader to avoid N+1.
Day 4 - Mutations + payload types: domain errors via UserError, never top-level.
Day 5 - Subscriptions: graphql-ws on WebSockets, SSE alternative, when to skip.

Weekend project: a small blog API with cursor pagination + comments.

Day 6 - Auth: JWT in context, field-level authorisation, persisted queries.
Day 7 - Caching: Apollo Client cache, Relay store, server-side response cache.
Day 8 - Performance: query cost analysis, depth limits, N+1 detection, persisted queries in prod.
Day 9 - Federation + schemas at scale: Apollo Federation v2, gateway, subgraph composition.
Day 10 - Observability + release: tracing per resolver, sampling, error reporting.

Capstone: ship a small federated GraphQL gateway with two subgraphs.

## Tips

- Connections + payloads from day one; never page by offset
- DataLoader per request, not per process
- Persisted queries + depth limits in production - they kill the exploit surface
- Trace every resolver in dev; sample in prod

Why it matters

GraphQL is a different muscle memory than REST. Get connections, payload types, and DataLoader right early; the rest is conventional API engineering. Federation is the answer when you have multiple teams owning slices of one graph.

Tip: Tweak the snippet with Try it Yourself », then sit the quiz at the bottom of the page.

Example

Example
# 30-day GraphQL bootcamp in the lesson body.
Try it Yourself »

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