# Summary
[Introduction](./introduction.md)
# Getting Started
- [Installation](./getting-started/installation.md)
- [Quick Start](./getting-started/quick-start.md)
- [Generating Descriptors](./getting-started/generating-descriptors.md)
# Core Concepts
- [Queries, Mutations & Subscriptions](./core/operations.md)
- [File Uploads](./core/file-uploads.md)
- [Field-Level Control](./core/field-control.md)
- [Multi-Descriptor Support](./core/multi-descriptor.md)
- [Incremental Delivery (@defer)](./core/defer.md)
- [Plugins](./core/plugins.md)
# Apollo Federation
- [Overview](./federation/overview.md)
- [Defining Entities](./federation/entities.md)
- [Entity Resolution](./federation/entity-resolution.md)
- [Extending Entities](./federation/extending-entities.md)
- [Federation Directives](./federation/directives.md)
- [Running with Apollo Router](./federation/apollo-router.md)
- [GraphOS & Schema Registry](./federation/graphos.md)
# Security
- [Authentication](./security/authentication.md)
- [Authorization](./security/authorization.md)
- [Security Headers](./security/security-headers.md)
- [DoS Protection](./security/dos-protection.md)
- [Query Whitelisting](./security/query-whitelisting.md)
- [Mutual TLS (mTLS)](./security/mtls.md)
- [WASM Plugin Sandboxing](./security/wasm-plugins.md)
# Advanced Features
- [Middleware](./advanced/middleware.md)
- [Health Checks](./advanced/health-checks.md)
- [Prometheus Metrics](./advanced/metrics.md)
- [OpenTelemetry Tracing](./advanced/tracing.md)
- [Introspection Control](./advanced/introspection.md)
- [REST API Connectors](./advanced/rest-connectors.md)
- [OpenAPI Integration](./advanced/openapi.md)
- [Query Cost Analysis](./advanced/query-cost-analysis.md)
- [Live Queries](./advanced/live-queries.md)
# Performance & Resilience
- [High Performance](./performance/high-performance.md)
- [Response Caching](./performance/caching.md)
- [Smart TTL Management](./performance/smart-ttl.md)
- [Smart TTL Integration Guide](./performance/smart-ttl-integration.md)
- [Response Compression](./performance/compression.md)
- [GBP+LZ4 Binary Protocol](./performance/gbp-compression.md)
- [LZ4 Ultra-Fast Compression](./performance/lz4-compression.md)
- [Request Collapsing](./performance/request-collapsing.md)
- [Automatic Persisted Queries](./performance/apq.md)
- [Circuit Breaker](./performance/circuit-breaker.md)
- [Batch Queries](./performance/batch-queries.md)
- [DataLoader](./performance/dataloader.md)
# Production
- [Helm Deployment](./production/helm-deployment.md)
- [Autoscaling & Load Balancing](./production/autoscaling.md)
- [Security Checklist](./production/security-checklist.md)
- [Graceful Shutdown](./production/graceful-shutdown.md)
- [Header Propagation](./production/header-propagation.md)
- [Configuration Reference](./production/configuration.md)
- [Cost Analysis](./production/cost-analysis.md)
- [Cost Optimization Strategies](./production/cost-optimization-strategies.md)
- [Cost Reduction Features](./production/cost-reduction-features.md)
# Reference
- [API Documentation](./reference/api.md)
- [Contributing](./reference/contributing.md)
