# Server Improvement (Optional)

Vexdata collects execution metrics to improve processes and optimize the code. The following metrics are collected (job duration, compute resources allocated, type of job, size of job).

```
startTime
endTime
executorCores
executorMemory
numExecutors
status
flowName
execId
root
jobType
LICENSE_NAME
IPAddress
```

{% hint style="info" %}
\*\*We never collect your organization's raw data. \*\*
{% endhint %}

If your organization would like to opt out of this process, open the *.env* file and set the flag *STORE\_CENTRAL\_FLAG=2*.