Hi I am trying to optimize a site for a client. I am now trying to get the last ditched bit of sweet sweet load speed out of it... I am adding the following Apache2 Directive: Code: <IfModule mod_deflate.c> # Compress common text and markup formats AddOutputFilterByType DEFLATE text/html AddOutputFilterByType DEFLATE text/plain AddOutputFilterByType DEFLATE text/xml AddOutputFilterByType DEFLATE text/css AddOutputFilterByType DEFLATE text/markdown AddOutputFilterByType DEFLATE text/x-markdown AddOutputFilterByType DEFLATE text/x-shellscript # For .sh files AddOutputFilterByType DEFLATE text/x-python # For .py files AddOutputFilterByType DEFLATE application/sql # For .sql files AddOutputFilterByType DEFLATE text/csv # For .csv files AddOutputFilterByType DEFLATE text/tab-separated-values # For .tsv files AddOutputFilterByType DEFLATE image/svg+xml AddOutputFilterByType DEFLATE application/xml AddOutputFilterByType DEFLATE application/xhtml+xml AddOutputFilterByType DEFLATE application/rss+xml AddOutputFilterByType DEFLATE application/javascript AddOutputFilterByType DEFLATE application/x-javascript AddOutputFilterByType DEFLATE application/json AddOutputFilterByType DEFLATE application/ld+json AddOutputFilterByType DEFLATE application/x-httpd-php AddOutputFilterByType DEFLATE font/woff AddOutputFilterByType DEFLATE font/woff2 # Exclude common binary, multimedia, and document formats from compression SetEnvIfNoCase Request_URI \.(?:gif|jpe?g|png|mp3|mp4|avi|mov|pdf|mpg|mkv|aac|m4a|opus|doc|docx|xls|xlsx|odt|ods|webp|webm|gz|zip|arj|rar|bin|exe|msi|dmg|iso|tar|bz2|7z)$ no-gzip dont-vary # Ensure proxies cache both compressed and uncompressed versions Header append Vary User-Agent env=!dont-vary </IfModule> The problem is when I enable that for the site, under Options > Apache Directive, then my Pingdom score suddenly drops to 76. The load time halfs, the amount of data downloaded doubles, and Pingdom takes my GZip score from 78 to 23? What am I missing here?
So it might be that mod_deflate is already on, with better settings than what you use with this config. Or the delivered pages are already compressed and optimized by the CMS used in this site, so enabling these mod_deflate options just makes it worse.
I know it was on, but it wasn't carrying the scope for the clients content. But I managed to fix it. I was missing just one rule in the directive: AddOutputFilterByType DEFLATE text/javascript Page load time is now 1.28 seconds. I have never gotten below 2 seconds before.
@till It would seem mundane to a mere peasant, but for sysadmins and web developers like us, that sweet sweet load time is a bigger high than any drug. Just shaving off 0.1seconds is a rush of endorphins.
