28.15. Avoid Serving Large Files with PHP-Enabled Apache
This isn't a coding tip, but rather a server setup tip. If your Web site serves large files for downloading, it may be a good idea to set up a special Web server for serving them instead of serving them through the PHP-enabled Apache Web server. There are several reasons for doing so.
Large downloads can take a significant amount of time. The number of concurrent processes that Apache uses is typically limited by a relatively small number. Every Apache process that serves a download file remains unavailable for the duration of the download. This reduces the number of concurrent users that your Web site can handle.
Apache processes consume relatively large amounts of memory for each process, ...
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