docs: add correlation IDs tutorial to address distributed tracing #3699
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WalkthroughA new documentation file titled Correlation IDs has been added. It explains the purpose and implementation of correlation IDs in AsyncAPI for distributed tracing, describes various methods of implementation (e.g., using message headers, payload fields, middleware), and provides a practical Node.js with AMQP example. The guide also highlights best practices and includes a sequence diagram illustrating the flow of messages across services. Changes
Sequence Diagram(s)sequenceDiagram
participant Client
participant Middleware
participant Broker
participant Service
Client->>Middleware: Generate & attach Correlation ID
Middleware->>Broker: Publish message with Correlation ID
Broker->>Service: Deliver message including Correlation ID
Service->>Middleware: Log/tracing using Correlation ID
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Actionable comments posted: 0
🧹 Nitpick comments (4)
markdown/docs/tutorials/correlation-ids.md (4)
14-16: Grammatical Improvement for Bullet List
Consider rephrasing the "Message Chain" description to include an article for clarity.
For example, update:- - Message Chain: Series of messages exchanged between different services + - Message Chain: A series of messages exchanged between different services🧰 Tools
🪛 LanguageTool
[uncategorized] ~15-~15: Possible missing article found.
Context: ...a business transaction - Message Chain: Series of messages exchanged between different...(AI_HYDRA_LEO_MISSING_A)
26-32: Overview of Implementation Methods
The section outlining different methods (Message Headers, Payload Fields, Middleware) for implementing correlation IDs is clear.
Consider, as a future enhancement, adding a brief note on the potential trade-offs or use-case scenarios for each method.
35-78: AsyncAPI YAML Snippet Validation and Consistency
The YAML snippet effectively demonstrates how to define correlation IDs in an AsyncAPI document. The structure and schema definitions (including the header for "correlation-id") are well presented.
Note: There is a minor naming convention discrepancy. The header property in the YAML is defined as"correlation-id"(with a hyphen), while in the Node.js example later, the AMQP options use bothcorrelationId(camelCase) and a header key of'correlation-id'. Consider ensuring consistency in naming conventions where possible to avoid confusion.
81-156: Practical Node.js Implementation Example
The Node.js code example is clear and practical. It demonstrates connecting to an AMQP broker, publishing messages with correlation IDs, and consuming messages while logging the correlation ID.
- Good Points:
- Usage of
uuidv4()for generating unique IDs.- Clear demonstration of inserting the correlation ID into both AMQP message properties and headers.
- Suggestions:
- Consider parameterizing the AMQP connection string (currently hardcoded as
'amqp://localhost') to improve reusability and ease testing in different environments.- It may be beneficial to include basic error handling (e.g., try/catch blocks) around asynchronous operations to make the sample more production-ready.
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markdown/docs/tutorials/correlation-ids.md
[uncategorized] ~15-~15: Possible missing article found.
Context: ...a business transaction - Message Chain: Series of messages exchanged between different...
(AI_HYDRA_LEO_MISSING_A)
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🔇 Additional comments (9)
markdown/docs/tutorials/correlation-ids.md (9)
1-5: Front Matter Completeness and Clarity
The YAML front matter is well-structured with a clear title, description, and weight. This provides sufficient metadata for the document.
7-9: Introduction Section Clarity
The introduction succinctly explains the concept of correlation IDs within event-driven architectures. It sets a solid context for the reader.
10-17: Explanation of Correlation IDs Components
The "Correlation IDs" section clearly describes the key components (Original Request, Message Chain, Correlation ID) involved in distributed tracing.Nitpick: Consider rewording the bullet for "Message Chain" to improve grammatical clarity (see next comment).
🧰 Tools
🪛 LanguageTool
[uncategorized] ~15-~15: Possible missing article found.
Context: ...a business transaction - Message Chain: Series of messages exchanged between different...(AI_HYDRA_LEO_MISSING_A)
18-25: Benefits of Using Correlation IDs
The "Why Use Correlation IDs?" section provides a concise and comprehensive list of benefits, which is very informative.
158-166: Best Practices Section
The "Best Practices" section provides clear, actionable guidelines for using correlation IDs, emphasizing ID uniqueness, propagation, logging, documentation, and accessibility.
167-180: Mermaid Sequence Diagram Clarity
The provided sequence diagram effectively visualizes the message flow and the usage of correlation IDs across services. The diagram enhances comprehension of the overall system behavior.
182-188: Monitoring and Debugging Guidance
This section clearly outlines how correlation IDs can be leveraged for effective monitoring and debugging, which complements the tutorial content well.
189-191: Conclusion Section
The conclusion succinctly reiterates the importance of correlation IDs for observability. It effectively wraps up the tutorial.
192-194: Reminder Block Emphasis
The "Remember" block reinforces the necessity of early generation and consistent propagation of correlation IDs. This additional reminder is valuable for best practices adherence.
Solves Tutorials:Correlation IDs
Added new tutorial explaining correlation IDs and their implementation in AsyncAPI
Tutorial includes:
Introduction to correlation IDs in event-driven architectures
Practical implementation examples using Node.js and AMQP
AsyncAPI specification examples showing how to define correlation IDs
Best practices and monitoring guidance
Sequence diagram for visual understanding
Summary by CodeRabbit