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2. Use simple structured logging

· One min read
Mithril Team

Status​

Superseded by ADR 7

Context​

  • Logs are a critical tool for operating any software system, enabling observability of the system.
  • Following 12 Factor Apps principles, providing the needed components and tools to be able to configure logging and monitoring should not be the responsibility of the software components

Decision​

Therefore

  • Each component of the system use Structured logging using documented and standardised JSON format for its logs
  • Logs are always emitted to stdout of the process the component is part of

Consequences​

  • The schema of the logged items should be properly documented in a JSON schema
  • It is the responsibility of the node operator to consume the logs and process them
  • We use existing libraries to provide needed log infrastructure, like slog for Rust