Module trace

HTTP timings and traces.

This module implements parsers and serializers for timing-related headers. These headers enable tracing and timing requests, and help answer the question of: “Where is my program spending its time?”

Specifications

• W3C Trace-Context header
• W3C Server-Timing header

Modules

• server_timing
  Metrics and descriptions for the given request-response cycle.

Structs

• Metric
  An individual entry into ServerTiming.
• ServerTiming
  Metrics and descriptions for the given request-response cycle.
• TraceContext
  Extract and apply Trace-Context headers.