Должны ли настройки скорости/кэша находиться в файле виртуального хоста или в конфигурации Apache?

Question

Некоторым CMS или веб-сайтам не подходят все используемые нами настройки скорости, поэтому мы добавляем в каждый файл виртуального хоста следующее:

# SPEED SETTINGS
# -----------------------------------------------------------------------

# Expired headers on cached items - file types below will be cached
ExpiresActive On
ExpiresByType text/html "access plus 90 seconds"
ExpiresByType text/css "access plus 2 weeks"
ExpiresByType text/javascript "access plus 2 weeks"
ExpiresByType image/png "access plus 1 month"

# Which file types to compress (deflate in Apche speak)
AddOutputFilterByType DEFLATE text/html text/css text/xml application/x-javascript application/javascript

# The downside of mod_deflate is the CPU time consumption so you may have to lower the compression level depending on your server
# UNCOMMENT and change number - 9 being the highest compression level, standard is 6
# DeflateCompressionLevel 6

# Deactivate compression for buggy browsers
BrowserMatch ^Mozilla/4 gzip-only-text/html
BrowserMatch ^Mozilla/4\.0[678] no-gzip
BrowserMatch \bMSIE !no-gzip !gzip-only-text/html

# Tells proxies not to deliver the same content to all user agents, because some of them just can't handle it
Header append Vary User-Agent

# Saves time on every request by turning off - can effect cgi scripts so comment out if having issues
HostnameLookups Off

# Persistent connections let the browsers request multiple files with one TCP connection, thus reducing overhead for TCP handshakes and speeding up requests a lot
KeepAlive On

# The maximum number of requests per one persistent connection - bad spambots may suck up all available connections if number is too high
MaxKeepAliveRequests 100

# The timeout after which a persistent connection is dropped - if high peaks in traffic are expected, don't set too high as you might have no connections left to serve new incoming requests
KeepAliveTimeout 15

Но нам сказали, что их следует устанавливать глобально в конфигурации Apache для сервера. Есть ли какие-либо недостатки в управлении настройками на каждом хосте?