Why doesn't my Go program use the GLog logging library correctly?

In the Go language, logs are a very important part and are often used to record various information, warnings, errors, etc. during development. GLog is a logging library provided by the Go language standard library, which can help us record logs more conveniently. However, some people may encounter problems: Why can't logs be recorded correctly when using GLog in a program?

The following are some common reasons why logging cannot be recorded correctly, and how to solve these problems.

Question 1: The log level is set, but there is no output record

Sometimes, we set the log level in the program to filter out the information we need. However, in some cases, even if the log level is set, no records are output. In this case, you need to check whether the log level is set correctly.

Solution: Check whether the correct log level is set in the code. If the log level is set correctly but records still cannot be output, it may be because the log output mode is set incorrectly. We can try to change the output mode and rerun the program to see if the records can be output normally.

Problem 2: The log is not output to the specified file

In some cases, we want to output the log to the specified file, but it cannot be output normally. At this time, we need to check whether we have permission to create files in the specified path.

Solution: Check whether the directory or folder where the program is located has write permissions. If not, we need to grant the corresponding permissions first. At the same time, you also need to check whether the log output path is set correctly.

Problem 3: Unable to output logs to the console

In some cases, we want to output log information to the console for debugging. However, sometimes it is found that the log information cannot be output to the console.

Solution: Check how the program is started. If you start the program from the command line, you need to check whether the Go code uses methods such as pipes and redirections to output logs to other places. At the same time, you also need to check whether the log output method is correctly set in the code.

Problem 4: Incomplete log records

Sometimes, we find that the log records are incomplete and cannot record all relevant information.

Solution: Check whether some blocking methods or long-running functions are called in the code. If such a situation exists, you need to use Go coroutine and put it into the background for execution to avoid affecting log records.

The above are some problems you may encounter when using GLog, as well as methods to solve these problems. Of course, different problems may require different solutions. We need to carefully analyze the specific circumstances of each problem and take corresponding solutions in a timely manner.

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