Nginx If Statement: Guide & Best Practices

In nginx, the if statement is used to execute different operations based on conditions. The syntax for using the if statement is as follows:

if (条件) {
    操作1;
    操作2;
    ...
}

For example, determine whether to redirect to another page based on the requested URI.

location /oldpage {
    if ($uri = /oldpage) {
        return 301 /newpage;
    }
}

It is worth noting that using if statements in nginx is not recommended as they can affect performance. A better approach is to use rewrite or other directives to achieve the same functionality.