Have you ever wondered why your application is too slow? Have you received complaints from your users that an application is unusable or unstable? Have you tried to dig into tons of log files on dozens of servers?

In this session, I will describe approaches of monitoring and log aggregation. This advice works for any LAMP application, but I will also give some special tips on modern PHP applications that use the Symfony components and Composer.

The talk is focused on the approach that could be helpful to both simple websites and complex high availability applications. But this approach is most helpful to scalable and business-critical applications powered by Symfony.