What is Log Sampling? #code #programming #devops

In this tutorial, we'll explore the concept of log sampling, a technique used to reduce the number of outputted logs, making it easier to manage storage and identify important logs.

We'll be using Vector, a powerful tool for log management, as there are currently no JavaScript loggers that support sampling. We'll start by obtaining the Vector Docker image and configuring it to include log file volumes.

Then, within our Vector configuration, we'll implement basic log sampling to limit the output to 1 in every 200 logs. We'll demonstrate the results in the console and show how to output the logs to a file in our TypeScript code, running them at regular intervals. Additionally, we'll explore excluding logs by remapping and adding conditions, as well as sampling logs based on unique identifiers using the key_field option.