Observing the behavior of an application through logs is something that many software developers are accustomed to, but when it comes to microservices and large-scale applications, monitoring manually is almost impossible.

In this context, where checking logs manually is extremely complex, using tools that parse logs and provide information in a simple way can be very useful.

There are some tools designed for this purpose. Among these tools, I would like to highlight Splunk.

Splunk has a free version, but with limited user capacity and quantity of MBs of logs per day. However, this version is very useful for getting acquainted with the tool. Overall, Splunk offers a system of queries to perform searches on the millions of lines of logs we can have. The following is a screenshot with a search example using Splunk: