C# Logging Best Practices with .NET

Logging is an essential part of application development and is often overlooked. It's like an airplane's black box that helps developers understand what went wrong when something goes awry in the app. Despite its importance, logging is frequently treated as an afterthought, implemented without proper planning or understanding. Poor logging can lead to difficulties in diagnosing issues in production and hinder search capabilities of a logging backend. Sonar provides C# logging rules that help developers avoid making mistakes when logging required information. These rules cover various aspects such as message syntax and semantics, placeholder duplication, order of placeholders, manual crafting of messages, using the wrong overload, wrong logger category, unlogged exception, conventions, and consistency. Sonar also provides recommendations for setting conventions to help relieve the brain of information overload and make the code base easier to understand. Additionally, it offers guidance on performance and log file considerations, such as avoiding too much logging that can lead to performance degradation or log file overload.

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