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# Widget Use Cases

You can use widgets to monitor various aspects of application health. To learn how to build a Screen to monitor your web application, see [Use Screens and Widgets to Monitor Log Data](https://logdna.slite.com/app/docs/7uw4zKMJ-P3H80).

This article lists some other ways you can use Widgets.

## Count All Log Lines for the Past Day

1. Create a **Count** widget.
2. Set the duration to **Last 1 Day**.
3. Optionally set the host and field value if you want to filter the log lines.

## Monitor Error Logs

There are multiple ways to measure error logs.

### **Time Shifted Graph**

Compare errors over a period.

1. Create a **Time Shifted** widget.
2. Set field to `level`.
3. Select **Advanced** filtering and enter the query `level:(warn OR error)`.
4. Set the duration to **Last 1 Week**.

### **Count**

See the number of errors using a filter.

1. Create a **Count** widget.
2. Select **Advanced** filtering and enter the query `level:(warn OR error)`.
3. Set the **Duration** to **Last 1 Week.**
4. To get a view of errors over time, you can create the widget again and choose a different duration.

### **Table**

Use a table to see error levels.

1. Create a **Table** widget.

2. Under **Data**:

   1. Set **Group by** to `level`.
   2. Set **Field** to `All Lines`.

3. Set **Duration** to `Last 1 Week`.

4. Under **Appearance**:

   1. Set Left Column Label to `Level`.
   2. Set Right Column Label to `Counts`.

## See Log Lines by App

1. Create a **Table** widget.

2. Under **Data**:

   1. **Group** by `app`.
   2. Set **Field** to `host`.
   3. Optionally set the field value.

3. Set the **Duration**.

4. Under **Appearance**:

   1. Set Left Column Label to `App`.
   2. Set Right Column Label to `Counts`.

## Authentication Attempts

1. Create a **Count** widget.

2. Under **Data**:

   1. Set **Field** to `host`.
   2. Set **Field** value to the host you want to monitor.
   3. Click **Advanced Monitoring** and add `authentication`

3. Set the **Duration** to **Last 1 Day.**