Observability Patterns — DoclingOptimisation
Current Logging
- Python
loggingmodule with custom format (%(message)s) - All logs go to stderr (stdout reserved for markdown output)
- Timing helper
_step()logs elapsed time since process start - Pipeline profiling enabled:
settings.debug.profile_pipeline_timings = True
Logging Standards
- Use
logging.getLogger("docling-processor")for the main logger - Include elapsed time in all step messages
- Log CPU detection results, accelerator config, batch sizes
- Log input file metadata (name, size)
- Log conversion timing (convert duration, export duration, total)
For Azure Deployment
- Container App Job logs go to Azure Log Analytics
- Consider structured JSON logging for machine-parseable output
- Track: conversion time, file size, thread count, model used
- Set up alerts for: job failures, timeouts, excessive memory usage
Health Monitoring
- Container App Jobs don't need health check endpoints
- Monitor job execution status via Azure Container Apps API
- Track job duration trends to detect performance regressions