Foundations

Core concepts and infrastructure that every SDK builds on - transport protocol, data model, contexts, scopes, and attributes.

The building blocks every SDK depends on. Understand how SDKs communicate with Sentry and the data structures they share.

Client
The SDK component responsible for event creation, integration management, and transport dispatch.
State Management
How SDKs manage contextual state — scopes, attributes, breadcrumbs, and the deprecated Hub model.
Trace Propagation
How SDKs propagate trace context between services via headers, metadata, and environment variables.
Data Scrubbing
Processing
How SDKs buffer, prioritize, and forward telemetry data to the transport layer.
Transport
How SDKs send data to Sentry - envelope format, authentication, compression, and rate limiting.

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