20 lines
1.0 KiB
Markdown
20 lines
1.0 KiB
Markdown
# Protocols
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There are two types of protocols list here.
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- **Probe Protocol**. Include the descriptions and defines about how agent send collected metric data and traces, also the formats of each entities.
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- **Query Protocol**. The backend provide query capability to SkyWalking own UI and others. These queries are based on GraphQL.
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## Probe Protocol
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They also related to the probe group, for understand that, look [Concepts and Designs](../concepts-and-designs/README.md) document.
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These groups are **Language based native agent protocol**, **Service Mesh protocol** and **3rd-party instrument protocol**.
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## Language based native agent protocol
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This protocol is combined from two parts:
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* [Cross Process Propagation Headers Protocol](Skywalking-Cross-Process-Propagation-Headers-Protocol-v1.md) is for in-wire propagation.
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which is usually used to carrier the necessary info to build trace.
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* [SkyWalking Trace Data Protocol](Trace-Data-Protocol.md) define the communication way and format between agent and backend.
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## Service Mesh probe protocol |