---
sidebar_label: Reference
doc_id: ba053afb-da58-4431-a45b-7a67492454d2
description: >-
  Customize deployment strategies with automatic rollback rules, telemetry
  monitoring, and traffic pacing controls.
keywords:
  - deployment strategies
  - automatic rollback
  - metrics monitoring
  - telemetry signals
  - traffic pacing
---

# Configuration options for strategies

You can customize how a deployment strategy behaves in **Platform Settings > Deployment Strategies**.
Each strategy includes configurable settings that control rollback triggers, telemetry-based monitoring, and traffic
pacing.

These options let you:

- Define automatic rollback rules based on metrics
- Choose which telemetry signals to monitor during rollout
- Adjust how quickly traffic shifts from one version to another

## Configure rollback with metrics

Set up automatic rollback triggered by telemetry signals:

- **Metric name** – e.g., `http.error_rate`  
- **Threshold** – Numeric value that triggers rollback  
- **Comparison** – `greater_than`, `less_than`, or `equal`

## How often nullplatform checks metrics

- **First 5 minutes:** Every 30 seconds (fast detection during initial rollout)  
- **After 5 minutes:** Every 1 minute  
- **After 2 hours** or once the deployment is finalized: Checks stop automatically

This approach balances quick detection with system performance.

## Reference: available metrics by deployment type

**Kubernetes, Container, and instance-based deployments**

| Metric name                      | Description                                                 |
| -------------------------------- | ----------------------------------------------------------- |
| `system.memory_usage_percentage` | Percentage of memory usage on the instance                  |
| `http.response_time`             | Average HTTP response time in milliseconds                  |
| `system.cpu_usage_percentage`    | Percentage of CPU usage on the instance                     |
| `http.healthcheck_fail`          | Number of failed health checks within the evaluation window |
| `http.rpm`                       | Number of HTTP requests per minute                          |
| `http.error_rate`                | Rate of HTTP 4xx & 5xx errors over total requests           |
| `http.healthcheck_count`         | Total number of health checks performed                     |



**Serverless deployments**

| Metric name                        | Description                                                      |
| ---------------------------------- | ---------------------------------------------------------------- |
| `serverless.throttles`             | Number of throttled executions due to concurrency or rate limits |
| `serverless.concurrent_executions` | Number of concurrent executions in progress                      |
| `serverless.invocations`           | Total number of function invocations                             |
| `serverless.duration`              | Average duration of function executions in milliseconds          |
| `serverless.errors`                | Total number of failed invocations due to errors                 |

## Configure traffic pacing

Configure gradual traffic shifting:

- **Interval** – Time between increments (e.g., 30s)  
- **Step size** – Percentage of traffic per step (e.g., 10%)