在本节中，你将了解 OpenTelemetry 项目的数据来源和关键组件。 这将帮助你理解 OpenTelemetry 的工作原理。
Observability primer-Core observability concepts.
Context propagation-Learn about the concept that enables Distributed Tracing.
Signals-Learn about the categories of telemetry supported by OpenTelemetry
Instrumentation-How OpenTelemetry facilitates instrumentation
Components-The main components that make up OpenTelemetry
Semantic Conventions-Common names for different kinds of operations and data.
Resources-Learn about the concept of Resources
Instrumentation scope-Learn about the concept of Instrumentation scope
Sampling-Learn about sampling and the different sampling options available in OpenTelemetry.
Distributions-A distribution, not to be confused with a fork, is customized version of an OpenTelemetry component.
Glossary-Terminology you may or may not be familiar with used by the OpenTelemetry project.