---
title: "Ruby Custom Instrumentation"
slug: "ruby-custom-instrumentation"
updated: 2019-03-27T19:39:00Z
published: 2019-03-27T19:39:00Z
---

> ## Documentation Index
> Fetch the complete documentation index at: https://docs.stackify.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Ruby Custom Instrumentation

## Configuration

**Custom Instrumentation** allows you to track classes and functions not natively supported in our Ruby Profiler. Include a `config/stackify.json` file in your application.

**Example:**

```
{
  "instrumentation": [
    {
      "class": "SampleClass1",
      "method": "execute"
    },
    {
      "class": "SampleClass2",
      "method": "index"
    }
  ]
}
```

## Tracked Functions

**Tracked Functions** allows you to track a specific method call across requests, data will show up in your application dashboard under the **Tracked Functions** tab.

**Example:**

```
{
  "instrumentation": [
    {
      "class": "SampleClass1",
      "method": "execute",
      "trackedFunction": true,
      "trackedFunctionName": "{{ClassName}}.{{MethodName}}"
    },
    {
      "class": "SampleClass2",
      "method": "index",
      "trackedFunction": true,
      "trackedFunctionName": "{{ClassName}}.{{MethodName}}"
    }
  ]
}
```