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GraphQL gives you flexibility. This makes server speed a challenge. Follow these steps to keep your API fast.
Stop the N+1 problem.
- Use DataLoader.
- It batches database requests.
- It stops too many database calls.
Use persisted queries.
- The client sends a hash.
- The server finds the query.
- This reduces request size.
- It improves security.
Manage query complexity.
- Give each field a cost.
- Set a budget for queries.
- Reject queries over the budget.
Improve your caching.
- Use Apollo Cache Control.
- Set TTLs for fields.
- Use a CDN with query hashes.
Reduce round trips.
- Use batching.
- Group multiple queries into one HTTP request.
- This lowers overhead.
Handle real-time data.
- Use subscriptions for live updates.
- Use them sparingly.
- Use polling for simpler tasks.
Track performance.
- Monitor each resolver.
- Use timing metrics.
- Find and fix bottlenecks.