Application logs

A log is a record of debug information that can be important in the future to see the performance of your application or to see how your application is doing or even to get some stats. Practically, all known applications produce some kind of log information. For example, by default, all the requests to NGINX are recorded in the /var/log/nginx/error.log and /var/log/nginx/access.log. The first one, error.log, stores any errors generated by your application, for example, PHP exceptions. The second one, access.log, is created by each request that hits your NGINX server.

As an experienced developer, you already know that keeping some logs in your application is very important and you are not alone in this task, you can find a lot of libraries that can make your life easier. You may be wondering where the important places are and where you can place log calls and the information you need to save. There is no rule of thumb you can always follow, you only need to think about the...