What are some best practices for using mod_rewrite to ensure that requests are handled correctly and efficiently?

When using mod_rewrite, it is important to set up rules efficiently to ensure that requests are handled correctly and without unnecessary redirects. One best practice is to use specific patterns in your RewriteRule directives to target only the URLs you want to rewrite, rather than using generic patterns that can match unintended URLs. Additionally, consider using the [L] flag to stop processing further rules once a match is found, which can improve performance.

RewriteEngine On
RewriteRule ^about$ about.php [L]
RewriteRule ^contact$ contact.php [L]