Traces give us the big picture of what happens when a request is made to an application. Whether your application is a monolith with a single database or a sophisticated mesh of services, traces are essential to understanding the full “path” a request takes in your application.
Let’s explore this with three units of work, represented as Spans:
hello span:
{ "name": "hello", "context": { "trace_id": "0x5b8aa5a2d2c872e8321cf37308d69df2", "span_id": "0x051581bf3cb55c13" }, "parent_id": null, "start_time": "2022-04-29T18:52:58.
This specification defines standard HTTP headers and a value format to propagate context information that enables distributed tracing scenarios. The specification standardizes how context information is sent and modified between services. Context information uniquely identifies individual requests in a distributed system and also defines a means to add and propagate provider-specific context information.
The Hypertext Transfer Protocol (HTTP) is a stateless application-level
protocol for distributed, collaborative, hypertext information systems.
This document describes the overall architecture of HTTP, establishes common
terminology, and defines aspects of the protocol that are shared by all
versions. In this definition are core protocol elements, extensibility
mechanisms, and the "http" and "https" Uniform Resource Identifier (URI)
schemes.
This document updates RFC 3864 and
obsoletes RFCs 2818, 7231, 7232, 7233,
7235, 7538, 7615, 7694, and portions of 7230.
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