$$NOW
Reference group: Date expressions
What it does
Provides a consistent current datetime value throughout a pipeline.
Syntax
System variable
Use case
Stamp a batch with one consistent processing time.
$$NOW: practical example
{ $set: { processedAt: "$$NOW" } }💡 Explanation
Provides a consistent current datetime value throughout a pipeline.
When to use it
Stamp a batch with one consistent processing time.
Key Takeaways
- Provides a consistent current datetime value throughout a pipeline.
- Typical use: Stamp a batch with one consistent processing time.