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# Aggregate Processor

## Aggregate Processor

**Purpose:** The Aggregate Processor allows you to reduce data volume by grouping multiple events into a single event using Tumbling or Sliding Interval Windows. This helps minimize data sent out of Mezmo while preserving meaningful aggregated values.

**Key Features:**

* **Window Types:** Choose between Tumbling (fixed interval, e.g., 1 minute to 25 hours) or Sliding (minimum duration with overlapping intervals).
* **Evaluation Options:** Define how to aggregate data using sum, min, max, average, intersection, distributed concatenation, or custom JavaScript logic.
* **Grouping:** Use field paths (name, namespace, tag) to group events based on log values.

**Steps to Add:**

1. Navigate to the Pipeline page and select your pipeline.
2. Click **Edit Pipeline** > **Add Processor**.
3. Scroll to the Aggregate Processor and configure:

* Title/Description for clarity.
* Field path for grouping.
  a. Define evaluation operation (e.g., sum, average).
  b. Set interval for Tumbling or minimum duration for Sliding.

**Note:** For sliding window details, consult Mezmo product documentation.