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Scoring: Logging & Error Handling

Max total score: 100

Basic Scope

  • +10 Nest logger is configured with configurable log level via LOG_LEVEL env variable
  • +10 Incoming requests are logged (method, URL, query parameters, body)
  • +10 Outgoing responses are logged (status code, response time)
  • +10 Global exception handling is implemented (exception filter or equivalent) — catches errors, logs them, returns proper HTTP responses
  • +10 Custom error classes are implemented (NotFoundError, ValidationError, UnauthorizedError, ForbiddenError) with statusCode property
  • +10 Custom error classes are used in route handlers instead of manually setting status codes

Advanced Scope

  • +10 Log file rotation is implemented with configurable max file size via LOG_MAX_FILE_SIZE env variable
  • +10 Sensitive data (passwords, tokens) is sanitized in logs — replaced with "[REDACTED]"
  • +10 uncaughtException listener is added with fatal-level logging and graceful shutdown
  • +10 unhandledRejection listener is added with error-level logging and graceful shutdown (server close, DB disconnect, process exit)

Forfeits

  • -30% of max task score Commits after deadline (except commits that affect only Readme.md, .gitignore, etc.)
  • -20 Missing PR or its description is incorrect
  • -20 No separate development branch
  • -20 Less than 3 commits in the development branch, not including commits that make changes only to Readme.md or similar files (tsconfig.json, .gitignore, .prettierrc.json, etc.)