"Demystifying Context Values"
summary
Shows concrete rules for using Go's context values: use them for HTTP header propagation and distributed tracing, not to hide API dependencies; implement small dedicated packages that expose contextual logging helpers, keep keys as an unexported key type, and centralize defaults and error handling. Benchmarks and examples show context layering costs are tiny but warn about loop-wrapping bugs, and give exact code patterns for reading, writing, and propagating request-scoped IDs and log fields across microservices.
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chapters (13)
- 0:00Introduction
- 1:20Context Values
- 2:30HTTP Request Information
- 4:25Background
- 5:43Header Data
- 6:25Cognitive Load
- 7:29Dedicated Functions
- 8:32General API
- 9:58Logging
- 14:08Interacting with Context
- 16:00Performance Concerns
- 17:47Making Bugs
- 19:18Summary
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