Speedup WordPress (Nginx’s Gzip_static + Minify + W3 Total Cache)

Last updated: 30th June, 2022, 7:11 PM

There’s several ways to speedup WordPress:-

iNotifyMinifyGzip.sh – Caching Files

Gzip or Deflate compression.
Minify HTML, CSS and JS files.
Browser’s Cache-Control.
Front-end proxy/page cache.

Disclaimer: As I’m frequently updating the original guides and installers here on TeaNazaR.com, I will not be responsible for any brick issues if you were to follow my obsolete guides copied elsewhere. Thus subscribe to this post to get latest updates. Modifying any part of a device may void its warranty.

Most notably with WordPress’s W3 Total Cache plugin which have the ability to perform all four methods above. While this a plus point of having all-in-one, I have to take into consideration for the system resources. Trying to perform all these at once in a single PHP request apparently bogs down my tiny WDMyCloud 4TB NAS which only has 650MHz dual core and 256Mb ram.

So I decided to split the process. W3 Total Cache plugin will only perform the page caching production. Then introduce an external monitoring shell script to gzip and minify (htm/html/scss/css/js) the cached page when there’s changes on a lower priority run. Nginx on the other hand will handle the serving of GZIP cached contents. The advantage to this is that I can also automatically gzip all other necessary contents (e.g. jpg, png etc.) almost on-the-fly without impacting the main PHP process.

The setup are accomplished as follows:-

Only let WordPress’s W3 Total Cache plugin cache the accessed pages (no gzip or minify), the rest are possibly left as default or your preferences: In the ‘Performance -> General Settings’, only enable below:
a) Enabled ‘Page cache’. ‘Page cache method’ set to ‘Disk Enhanced’. Go to the ‘Page Cache’ page and enable ‘Cache posts page/feeds/SSL’. It’s also recommended to prime and preload the cache if you have any sitemap plugin already installed. I did my cache priming with the external ‘wp-cron.php’ cronjob script as described in my other post here.
b) Enabled ‘Browser Cache’. Go to the ‘Browser Cache’ page enable all four ‘Set expires header’ and disable all four ‘Enable HTTP (gzip) compression’.
Place the script below somewhere on your server, make the script executable chmod 0755 ./iNotifyMinifyGzip.sh (assuming the script is in the current path) and schedule a cronjob crontab -e to run it at boot as a HTTPD user i.e. “www-data” (WP plugins will have permission issues upgrading if caches created as root), then add the schedule to a new line:
Shell
@reboot sudo -u www-data nice -n19 /home/Nazar/scripts/iNotifyMinifyGzip.sh >/dev/null 2>&1
1
@reboot sudo -u www-data nice -n19 /home/Nazar/scripts/iNotifyMinifyGzip.sh >/dev/null 2>&1

You can change the nice priority accordingly, nice -n19 as the lowest and nice -n-20 as the highest (not recommended) or just omit the nice command to run at normal priority. For testing purposes, you can run it normally on the terminal ./iNotifyMinifyGzip.sh (assuming the script is in the current path). To run the process permanently in background, use sudo -u www-data nohup ./iNotifyMinifyGzip.sh >/dev/null 2>&1 &. If you’ve made changes to the script, just re-run it again and the previous process will get terminated. To stop it, issue killall iNotifyMinifyGzip.sh inotifywait.
Prepare the requirements and follow instructions in the script below to activate the auto monitoring:

iNotifyMinifyGzip.sh

#!/bin/bash

# iNotifyMinifyGzip.sh v3.7 by Nazar78 @ TeaNazaR.com
#####################################################
# Simple script to pre-GZIP static files via Nginx's gzip_static module.
# This is done via inotify-tools which will also minify HTML/JS/CSS files before gzipping.
# '*.gz' files will be deleted/recreated automatically if the original has been removed/modified.
# Changes only affects newer files during runtime. To force the process, 'touch' the files:
# i.e 'find /var/www/wordpress -type f -name "*.html" -exec touch {} \;'.
# There will be only one script instance running, existing will be killed if any.
#
# Requirements:
# - Nginx's gzip_static module - Add to Nginx's config "gzip_static on;"
# - GZIP CLI - On Debian, apt-get install gzip
# - PHP CLI - On Debian, apt-get install php5-cli
# - Perl CLI - On Debian, apt-get install perl
# - inotify-tools - On Debian, apt-get install inotify-tools
# - minify-2.1.7 - http://code.google.com/p/minify/
#
# Known issues:
# - inotifywait can miss some events if there's lots of files being processed at once.
#   The affected files will be processed at next file access, if possible.
# - inotifywait doesn't follow symlinks and this is its limitation.
#   Mount bind the paths if needed.
#
# History:
# v1.0 - 20150220 - 1st release.
# v1.1 - 20150422 - Changed working path to '/tmp/' and fixed multiple request overlapping causing corrupted gzip.
# v1.2 - 20150428 - Add some checkings for minify.php and gzip.
# v1.3 - 20150520 - Added new ASIDE html tags cache so all pages reflect the latest when frontpage gets updated.
# v1.4 - 20150527 - Fixed the known rename event issue, long filename issue and several others.
# v1.5 - 20150529 - Update comment pages when main page gets updated which is being left out by WP Total Cache.
# v1.6 - 20150616 - Fixed attribute change event which caused issues.
# v1.7 - 20150623 - Fixed ASIDE html tags issues with Google translate and removed a bug from v1.5.
# v1.8 - 20150825 - Remove pages paths when main page gets deleted which is being left out by WP Total Cache.
# v1.9 - 20151005 - Fixed corrupted gzip by deleting when files still locked by other processes.
# v2.0 - 20151006 - Fixed unable to recursively remove pages paths when main page gets deleted.
# v2.1 - 20151009 - Fixed ASIDE html tags cache for WP JetPack Gallery 'This slideshow requires JavaScript'.
# v2.2 - 20151016 - Tweaked ASIDE html tags cache for WP JetPack Gallery to load images only after page loaded.
# v2.3 - 20151112 - Prettify ASIDE html tags cache 'Loading...' text.
# v2.4 - 20151130 - Fixed not to force gzip newly created/modified images to prevent corruption.
# v2.5 - 20160226 - Minor fixes on rm command and auto remove zero byte pages resulted from failed PHP process.
# v2.6 - 20160926 - Minor fixes on regexp causing gallery not loading due to upgrade of WP Total Cache v0.9.5.
# v2.7 - 20160929 - Fixed not to gzip a file that failed to be minified, instead, gzip the original file.
# v2.8 - 20170503 - Improve detection of .old and _old files.
# v2.9 - 20170509 - Support more page caching plugins and remove invalid pages resulted from failed PHP process.
# v3.0 - 20171118 - Upgrade the ASIDE support for WP Core 4.9 Gallery from 'gallery-#' to 'media_gallery-#'.
# v3.1 - 20180324 - Upgrade the ASIDE support for new Jetpack Gallery slideshow.
# v3.2 - 20180521 - Fixed excluded items still being processed. Changed sub shell process to function.
# v3.3 - 20190101 - Exclude already minified JS/CSS '*.min.js/css' from being erroneously re-minified again.
# v3.4 - 20190722 - Fixed bash parameter substitution by escaping the tilde home expansion character.
# v3.5 - 20200420 - Improve ASIDE html tags without double quotes. Allow Jetpack slideshow JS full URL. Add last modified timestamp variable to request URI.
# v3.6 - 20220407 - Fixed getScript regex containing ID in script tags.
# v3.7 - 20220630 - Added WP Total Cache request URI with '_slash'.
# 
# PS: Feel free to distribute but kindly retain the credits (-:
#####################################################

# Begin settings
# GZIP_ROOTS - Absolute server root path to monitor recursively for changes. Each separated by new line.
# Note that you'll need to restart the script if any of the 'GZIP_ROOTS' got renamed or replaced.
GZIP_ROOTS="
/share/Web/wordpress
"
# GZIP_COMPRESSION - Gzip compress ratio. '1-9', least to best.
GZIP_COMPRESSION=9
# MINIFY_CLI - Absolute path to command line minify 'minify.php'.
MINIFY_CLI="/share/Web/www/sbin/minify-2.1.7/min_extras/cli/minify.php"
# EXCLUDE_SUBDIRS - Excluded subdirectories to speedup monitoring process. Each separated by new line.
EXCLUDE_SUBDIRS="
/share/Web/wordpress/wp-content/upgrade
/share/Web/wordpress/wp-content/cache/config
/share/Web/wordpress/wp-content/cache/db
/share/Web/wordpress/wp-content/cache/object
/share/Web/wordpress/wp-content/cache/tmp
"
# EXCLUDE_EXTENSIONS - Excluded file extensions to speedup monitoring process. Each separated by space.
# 'gz' is automatically excluded in the monitoring process.
EXCLUDE_EXTENSIONS="log sql zip tar pdf php pl cgi fcgi conf htaccess htpasswd htgroup bak old tmp crt key cnt sh csv src"
# MONITOR_EXTENSIONS - Inotify monitor changes on file extensions. Each separated by space.
# Note that 'EXCLUDE_EXTENSIONS' is priority. Excluded extensions will not be monitored even specified here.
# 'htm html scss css js' are automatically monitored as they needs to be minified thus need not specify.
MONITOR_EXTENSIONS="xml bmp jpeg jpg png gif ico swf ttf eot woff svg txt webm"
# CACHE_ASIDE - Cache ASIDE html tags so all pages reflect the latest when frontpage gets updated. Each separated by space.
# Note that this depends on your WP theme/plugin if they use <ASIDE> html tags. Caches are loaded via AJAX but SEO friendly.
# This will parse single/multi-domain cache paths and create the frontpage aside cache accordingly.
CACHE_ASIDE="recent-posts-2 recent-comments-2 tag_cloud-2 top-posts-2 archives-2 blog_subscription-2 gallery-10"
# CACHE_PATH - ./wordpress/wp-content/cache/[PATH] relative path name specific to the caching plugin.
CACHE_PATH="page_enhanced"
# End settings

FIND_ROOT() {
    DOC_ROOT=
    for i in "${GZIP_ROOTS_ARRAY[@]}";do
        [[ "$1" =~ "$i/" ]]&&DOC_ROOT="$i"&&break
    done
}
FIND_ASIDE() {
    ASIDE_ROOT=
    CACHE_ARRAY=($(find "$DOC_ROOT/wp-content/cache/${CACHE_PATH}"\
    -mindepth 1 -maxdepth 1 -type d 2>/dev/null))
    for i in "${CACHE_ARRAY[@]}";do
        [[ "$1" =~ "$i/" ]]&&ASIDE_ROOT="$i"&&break
    done
}
BUILD_CACHE() {
    ASIDE=
    DIR="${1%/*}"
    BASE="${DIR##*/}"
    FILE="$(cat "$1" 2>/dev/null)"||return
    rm -f "$DOC_ROOT/wp-content/cache/$BASE-*.html">/dev/null 2>&1
    for i in "${CACHE_ASIDE_ARRAY[@]}";do
        ASIDE=$(echo "$FILE"|perl -s0777ne\
        'print $1 if /<aside id=.?$i.?.+?>(.+?)<\/aside>/igs' -- -i="$i" 2>/dev/null)
        if [ "$ASIDE" != "" ];then
            SLIDESHOW=
            if [[ "$i" =~ ^gallery-[0-9] ]] || [[ "$i" =~ ^media_gallery-[0-9] ]];then
                SLIDESHOW=$(echo "$FILE"|perl -s0777ne\
                'print $1 if /<script.+src=.?(.+?slideshow-shortcode.+?).?\s?(id=.+)?><\/script>/i' 2>/dev/null)
                if [ "$SLIDESHOW" != "" ];then
                    SLIDESHOW="<script>(function($) {
                    \$('.jetpack-slideshow-noscript').html('Loading...');
                    window.onload=function(){$.ajaxSetup({cache: true});
                    $.getScript('${SLIDESHOW}');};})(jQuery);</script>"
                fi
            fi
            echo "<script>if (!document.getElementById('$i')) 
            document.location = '//$BASE'</script>
            $ASIDE$SLIDESHOW">"$DOC_ROOT/wp-content/cache/$BASE-$i.html"
            echo "Built aside tag cache for '$DOC_ROOT/wp-content/cache/$BASE-$i.html'"
        fi
    done
    if [ "$ASIDE" != "" ];then
        ASIDE_CACHED=("${ASIDE_CACHED[@]}" "$DOC_ROOT/wp-content/cache/${CACHE_PATH}/$BASE:1")
        ASIDE_CACHED_TS[$DOC_ROOT]=$(date +%Y%m%d%H%M%S)
    else
        ASIDE_CACHED=("${ASIDE_CACHED[@]}" "$DOC_ROOT/wp-content/cache/${CACHE_PATH}/$BASE:0")
        unset ASIDE_CACHED_TS[$DOC_ROOT]
    fi
}
PROCESS() {
    if [ -z "$PARENT" ];then
        ps -ef|grep -E '[a-zA-Z]+\s+[0-9]+\s+1\s.+iNotifyMinifyGzip.?sh'|\
        awk '{print $2}'|xargs kill -9>/dev/null 2>&1
        PARENT=1
    fi
    while read D T E F;do
        # echo "DEBUG - [$D $T] $E: $F"&&continue
        [[ "$E" =~ ISDIR ]]||[ "$D $T $F" = "$PROCESSED" ]||\
        [[ "${F%/*}" =~ $EXCLUDE_SUBDIRS ]]||[[ "${F##*/}" =~ \.($EXCLUDE_EXTENSIONS)$ ]]&&continue
        PROCESSED="$D $T $F"
        if [[ ! "$E" =~ (DELETE|MOVED_FROM) ]]&&[[ "$F" =~ \.($MONITOR_EXTENSIONS)$ ]];then
            [[ "$E" =~ CLOSE ]]&&[ -f "$F.gz" ]&&continue
            [[ "$E" =~ ATTRIB ]]&&eval [ "$(stat -c"%Y != %Z" "$F" 2>/dev/null) 2>/dev/null" ]&&continue
            echo "[$D $T] $E: $F"
            if [[ "$E" =~ (CREATE|MODIFY) ]]&&[[ "$F" =~ \.(bmp|jpeg|jpg|png|gif)$ ]];then
                rm -f "$F.gz">/dev/null 2>&1
                continue
            fi
            TMPF="${F//\//\~}"&&TMPF="/tmp/iNotifyMinifyGzip_$RANDOM_${TMPF:0:227}.gz_"
            if [[ "$F" =~ \.(htm|html)$ ]];then
                if [ "$(grep -Ec "<\/(div|html|loc|script)>" "$F" 2>/dev/null)" = 0 ];then
                    rm -f "$F" "$F.gz" "$F"*old>/dev/null 2>&1
                    echo "Removed invalid html page cache from '$F*'"
                    continue
                fi
                FIND_ROOT "$F"
                FIND_ASIDE "$F"
                if [[ "$F" =~ $ASIDE_ROOT/_index(_slash)?.html$ ]]||
                    [[ ! "${ASIDE_CACHED[@]}" =~ "$ASIDE_ROOT:" ]]&&
                    [ -e "$ASIDE_ROOT/${F##*/}" ];then
                    BUILD_CACHE "$ASIDE_ROOT/${F##*/}"
                fi
                ASIDE=
                if [[ "$F" =~ /_index(_slash)?.html$ ]]&&[[ "${ASIDE_CACHED[@]}" =~ "$ASIDE_ROOT:1" ]];then
                    ASIDE=$(perl -s0777pe\
                    's/(<aside id=.?($L0).?.+?>).+?(<\/aside>)/"$1 Loading...
                    <a href=\"\/wp-content\/cache\/$L5-$2.html\" 
                    onclick=\"window.location.reload(true)\"> ".pretty($2)."<\/a> 
                    $3$L1$2$L2$L5-$2$L3$L6$L4"/eigs;sub pretty {my $i = shift;$i =~ s/(-\d+$|_|-)/ /g;
                    return join("", map(ucfirst, split(/(\w+)/, $i)))}'\
                    -- -L0="$L0" -L1="$L1" -L2="$L2" -L3="$L3" -L4="$L4" \
                    -L5="${ASIDE_ROOT##*/}" -L6="${ASIDE_CACHED_TS[$DOC_ROOT]}" "$F" 2>/dev/null)
                fi
                if [ "$ASIDE" != "" ];then
                    if [ "$SLIDESHOW" != "" ];then
                        ASIDE=$(echo "$ASIDE"|perl -s0777pe\
                        's/<script.+src=.?.+?slideshow-shortcode.+?.?><\/script>//i' 2>/dev/null)
                    fi
                    MINIFIED=$(echo "$ASIDE"|php "$MINIFY_CLI" -t html -d"$DOC_ROOT")
                    if [ "$MINIFIED" != "" ];then
                        echo "$MINIFIED"|gzip -c$GZIP_COMPRESSION>"$TMPF"
                    else
                        echo "$ASIDE"|gzip -c$GZIP_COMPRESSION>"$TMPF"
                    fi
                else
                    MINIFIED=$(php "$MINIFY_CLI" -t html -d"$DOC_ROOT" "$F")
                    if [ "$MINIFIED" != "" ];then
                        echo "$MINIFIED"|gzip -c$GZIP_COMPRESSION>"$TMPF"
                    else
                        gzip -c$GZIP_COMPRESSION "$F">"$TMPF"||rm -f "$TMPF">/dev/null 2>&1
                    fi
                fi
                rm -f "$F"*old>/dev/null 2>&1
            elif [[ "$F" =~ \.js$ ]]&&[[ ! "$F" =~ \.min\.js$ ]];then
                FIND_ROOT "$F"
                MINIFIED=$(php "$MINIFY_CLI" -t js -d"$DOC_ROOT" "$F")
                if [ "$MINIFIED" != "" ];then
                    echo "$MINIFIED"|gzip -c$GZIP_COMPRESSION>"$TMPF"
                else
                    gzip -c$GZIP_COMPRESSION "$F">"$TMPF"||rm -f "$TMPF">/dev/null 2>&1
                fi
            elif [[ "$F" =~ \.(scss|css)$ ]]&&[[ ! "$F" =~ \.min\.(scss|css)$ ]];then
                FIND_ROOT "$F"
                MINIFIED=$(php "$MINIFY_CLI" -t css -d"$DOC_ROOT" "$F")
                if [ "$MINIFIED" != "" ];then
                    echo "$MINIFIED"|gzip -c$GZIP_COMPRESSION>"$TMPF"
                else
                    gzip -c$GZIP_COMPRESSION "$F">"$TMPF"||rm -f "$TMPF">/dev/null 2>&1
                fi
            else
                gzip -c$GZIP_COMPRESSION "$F">"$TMPF"||rm -f "$TMPF">/dev/null 2>&1
            fi
            mv -f "$TMPF" "$F.gz">/dev/null 2>&1||rm -f "$F.gz">/dev/null 2>&1
        elif [ -f "$F.gz" ];then
            if [[ "$E" =~ (DELETE|MOVE) ]]&&[[ "$F" =~ /_index(_slash)?.html$ ]];then
                find "${F%/*}" -maxdepth 1 -type d -name "comment-page*" -o -name "page"|while read OLD;do
                    rm -fr "$OLD">/dev/null 2>&1
                    echo "Removed stale caches from '$OLD'"
                done
            fi
            echo "[$D $T] $E: $F"
            rm -f "$F.gz" "$F"*old>/dev/null 2>&1
        fi
    done
}

[ "$(which gzip 2>/dev/null)" = "" ]&&echo "Error: Unable to find 'GZIP CLI'."&&exit 1
[ "$(which php 2>/dev/null)" = "" ]&&echo "Error: Unable to find 'PHP CLI'."&&exit 1
[ "$(which perl 2>/dev/null)" = "" ]&&echo "Error: Unable to find 'PERL CLI'."&&exit 1
[ "$(which inotifywait 2>/dev/null)" = "" ]&&echo "Error: Unable to find 'inotify-tools'."&&exit 1
[ ! -e "$MINIFY_CLI" ]&&echo "Error: Unable to find '\$MINIFY_CLI'."&&exit 1
[[ "$GZIP_COMPRESSION" =~ [0-9] ]]&&[ "$GZIP_COMPRESSION" -le 9 ]||GZIP_COMPRESSION=9
[ "$(echo $GZIP_ROOTS)" = "" ]&&echo "Error: Please specify some '\$GZIP_ROOTS'."&&exit 1
for i in ${GZIP_ROOTS//\\n/};do [ ! -e "$i" ]&&echo "Error: Path does not exists '$i'."&&exit 1;done
[ "$(echo $EXCLUDE_SUBDIRS)" = "" ]&&EXCLUDE_SUBDIRS="/dev/null"||
EXCLUDE_SUBDIRS=$(echo $EXCLUDE_SUBDIRS|sed 's/ /|/g')
[ "$(echo $EXCLUDE_EXTENSIONS)" = "" ]&&EXCLUDE_EXTENSIONS="/dev/null"||
EXCLUDE_EXTENSIONS=$(echo gz gz_ $EXCLUDE_EXTENSIONS|sed 's/ /|/g')
MONITOR_EXTENSIONS=$(echo htm html scss css js $MONITOR_EXTENSIONS|sed 's/ /|/g')
CACHE_ASIDE_REGEX=$(echo $CACHE_ASIDE|sed 's/ /|/g')
EVENTS="attrib,create,modify,close_nowrite,move,delete"
ps -ef|grep iNotifyMinifyGzip.sh|grep -v grep|grep -v $$|awk {'print $2'}|xargs kill -9>/dev/null 2>&1
ps -ef|grep "inotifywait -mre$EVENTS"|
grep -v grep|awk {'print $2'}|xargs kill -9>/dev/null 2>&1
rm -f /tmp/iNotifyMinifyGzip_*>/dev/null 2>&1
L0=$CACHE_ASIDE_REGEX
L1='<script>(function($) {$( "#'
L2='" ).load( "/wp-content/cache/'
L3=".html?${0##*/}="
L4='");})(jQuery);</script>'
GZIP_ROOTS_ARRAY=(${GZIP_ROOTS//\\n/})
CACHE_ASIDE_ARRAY=(${CACHE_ASIDE//\\n/})
declare -A ASIDE_CACHED_TS
inotifywait -mre$EVENTS --timefmt '%F %T' --format '%T %e %w%f'\
    --excludei "\.($EXCLUDE_EXTENSIONS)$|($EXCLUDE_SUBDIRS)|(^/.+/$)" $(echo $GZIP_ROOTS)|PROCESS
exit $?

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#!/bin/bash

# iNotifyMinifyGzip.sh v3.7 by Nazar78 @ TeaNazaR.com

#####################################################

# Simple script to pre-GZIP static files via Nginx's gzip_static module.

# This is done via inotify-tools which will also minify HTML/JS/CSS files before gzipping.

# '*.gz' files will be deleted/recreated automatically if the original has been removed/modified.

# Changes only affects newer files during runtime. To force the process, 'touch' the files:

# i.e 'find /var/www/wordpress -type f -name "*.html" -exec touch {} \;'.

# There will be only one script instance running, existing will be killed if any.

# Requirements:

# - Nginx's gzip_static module - Add to Nginx's config "gzip_static on;"

# - GZIP CLI - On Debian, apt-get install gzip

# - PHP CLI - On Debian, apt-get install php5-cli

# - Perl CLI - On Debian, apt-get install perl

# - inotify-tools - On Debian, apt-get install inotify-tools

# - minify-2.1.7 - http://code.google.com/p/minify/

# Known issues:

# - inotifywait can miss some events if there's lots of files being processed at once.

# The affected files will be processed at next file access, if possible.

# - inotifywait doesn't follow symlinks and this is its limitation.

# Mount bind the paths if needed.

# History:

# v1.0 - 20150220 - 1st release.

# v1.1 - 20150422 - Changed working path to '/tmp/' and fixed multiple request overlapping causing corrupted gzip.

# v1.2 - 20150428 - Add some checkings for minify.php and gzip.

# v1.3 - 20150520 - Added new ASIDE html tags cache so all pages reflect the latest when frontpage gets updated.

# v1.4 - 20150527 - Fixed the known rename event issue, long filename issue and several others.

# v1.5 - 20150529 - Update comment pages when main page gets updated which is being left out by WP Total Cache.

# v1.6 - 20150616 - Fixed attribute change event which caused issues.

# v1.7 - 20150623 - Fixed ASIDE html tags issues with Google translate and removed a bug from v1.5.

# v1.8 - 20150825 - Remove pages paths when main page gets deleted which is being left out by WP Total Cache.

# v1.9 - 20151005 - Fixed corrupted gzip by deleting when files still locked by other processes.

# v2.0 - 20151006 - Fixed unable to recursively remove pages paths when main page gets deleted.

# v2.1 - 20151009 - Fixed ASIDE html tags cache for WP JetPack Gallery 'This slideshow requires JavaScript'.

# v2.2 - 20151016 - Tweaked ASIDE html tags cache for WP JetPack Gallery to load images only after page loaded.

# v2.3 - 20151112 - Prettify ASIDE html tags cache 'Loading...' text.

# v2.4 - 20151130 - Fixed not to force gzip newly created/modified images to prevent corruption.

# v2.5 - 20160226 - Minor fixes on rm command and auto remove zero byte pages resulted from failed PHP process.

# v2.6 - 20160926 - Minor fixes on regexp causing gallery not loading due to upgrade of WP Total Cache v0.9.5.

# v2.7 - 20160929 - Fixed not to gzip a file that failed to be minified, instead, gzip the original file.

# v2.8 - 20170503 - Improve detection of .old and _old files.

# v2.9 - 20170509 - Support more page caching plugins and remove invalid pages resulted from failed PHP process.

# v3.0 - 20171118 - Upgrade the ASIDE support for WP Core 4.9 Gallery from 'gallery-#' to 'media_gallery-#'.

# v3.1 - 20180324 - Upgrade the ASIDE support for new Jetpack Gallery slideshow.

# v3.2 - 20180521 - Fixed excluded items still being processed. Changed sub shell process to function.

# v3.3 - 20190101 - Exclude already minified JS/CSS '*.min.js/css' from being erroneously re-minified again.

# v3.4 - 20190722 - Fixed bash parameter substitution by escaping the tilde home expansion character.

# v3.5 - 20200420 - Improve ASIDE html tags without double quotes. Allow Jetpack slideshow JS full URL. Add last modified timestamp variable to request URI.

# v3.6 - 20220407 - Fixed getScript regex containing ID in script tags.

# v3.7 - 20220630 - Added WP Total Cache request URI with '_slash'.

# PS: Feel free to distribute but kindly retain the credits (-:

#####################################################

# Begin settings

# GZIP_ROOTS - Absolute server root path to monitor recursively for changes. Each separated by new line.

# Note that you'll need to restart the script if any of the 'GZIP_ROOTS' got renamed or replaced.

GZIP_ROOTS="

/share/Web/wordpress

# GZIP_COMPRESSION - Gzip compress ratio. '1-9', least to best.

GZIP_COMPRESSION=9

# MINIFY_CLI - Absolute path to command line minify 'minify.php'.

MINIFY_CLI="/share/Web/www/sbin/minify-2.1.7/min_extras/cli/minify.php"

# EXCLUDE_SUBDIRS - Excluded subdirectories to speedup monitoring process. Each separated by new line.

EXCLUDE_SUBDIRS="

/share/Web/wordpress/wp-content/upgrade

/share/Web/wordpress/wp-content/cache/config

/share/Web/wordpress/wp-content/cache/db

/share/Web/wordpress/wp-content/cache/object

/share/Web/wordpress/wp-content/cache/tmp

# EXCLUDE_EXTENSIONS - Excluded file extensions to speedup monitoring process. Each separated by space.

# 'gz' is automatically excluded in the monitoring process.

EXCLUDE_EXTENSIONS="log sql zip tar pdf php pl cgi fcgi conf htaccess htpasswd htgroup bak old tmp crt key cnt sh csv src"

# MONITOR_EXTENSIONS - Inotify monitor changes on file extensions. Each separated by space.

# Note that 'EXCLUDE_EXTENSIONS' is priority. Excluded extensions will not be monitored even specified here.

# 'htm html scss css js' are automatically monitored as they needs to be minified thus need not specify.

MONITOR_EXTENSIONS="xml bmp jpeg jpg png gif ico swf ttf eot woff svg txt webm"

# CACHE_ASIDE - Cache ASIDE html tags so all pages reflect the latest when frontpage gets updated. Each separated by space.

# Note that this depends on your WP theme/plugin if they use <ASIDE> html tags. Caches are loaded via AJAX but SEO friendly.

# This will parse single/multi-domain cache paths and create the frontpage aside cache accordingly.

CACHE_ASIDE="recent-posts-2 recent-comments-2 tag_cloud-2 top-posts-2 archives-2 blog_subscription-2 gallery-10"

# CACHE_PATH - ./wordpress/wp-content/cache/[PATH] relative path name specific to the caching plugin.

CACHE_PATH="page_enhanced"

# End settings

FIND_ROOT() {

DOC_ROOT=

for i in "${GZIP_ROOTS_ARRAY[@]}";do

[[ "$1" =~ "$i/" ]]&&DOC_ROOT="$i"&&break

done

}

FIND_ASIDE() {

ASIDE_ROOT=

CACHE_ARRAY=($(find "$DOC_ROOT/wp-content/cache/${CACHE_PATH}"\

-mindepth 1 -maxdepth 1 -type d 2>/dev/null))

for i in "${CACHE_ARRAY[@]}";do

[[ "$1" =~ "$i/" ]]&&ASIDE_ROOT="$i"&&break

done

}

BUILD_CACHE() {

ASIDE=

DIR="${1%/*}"

BASE="${DIR##*/}"

FILE="$(cat "$1" 2>/dev/null)"||return

rm -f "$DOC_ROOT/wp-content/cache/$BASE-*.html">/dev/null 2>&1

for i in "${CACHE_ASIDE_ARRAY[@]}";do

ASIDE=$(echo "$FILE"|perl -s0777ne\

'print $1 if /<aside id=.?$i.?.+?>(.+?)<\/aside>/igs' -- -i="$i" 2>/dev/null)

if [ "$ASIDE" != "" ];then

SLIDESHOW=

if [[ "$i" =~ ^gallery-[0-9] ]] || [[ "$i" =~ ^media_gallery-[0-9] ]];then

SLIDESHOW=$(echo "$FILE"|perl -s0777ne\

'print $1 if /<script.+src=.?(.+?slideshow-shortcode.+?).?\s?(id=.+)?><\/script>/i' 2>/dev/null)

if [ "$SLIDESHOW" != "" ];then

SLIDESHOW="<script>(function($) {

\$('.jetpack-slideshow-noscript').html('Loading...');

window.onload=function(){$.ajaxSetup({cache: true});

$.getScript('${SLIDESHOW}');};})(jQuery);</script>"

echo "<script>if (!document.getElementById('$i'))

document.location = '//$BASE'</script>

$ASIDE$SLIDESHOW">"$DOC_ROOT/wp-content/cache/$BASE-$i.html"

echo "Built aside tag cache for '$DOC_ROOT/wp-content/cache/$BASE-$i.html'"

done

if [ "$ASIDE" != "" ];then

ASIDE_CACHED=("${ASIDE_CACHED[@]}" "$DOC_ROOT/wp-content/cache/${CACHE_PATH}/$BASE:1")

ASIDE_CACHED_TS[$DOC_ROOT]=$(date +%Y%m%d%H%M%S)

else

ASIDE_CACHED=("${ASIDE_CACHED[@]}" "$DOC_ROOT/wp-content/cache/${CACHE_PATH}/$BASE:0")

unset ASIDE_CACHED_TS[$DOC_ROOT]

}

PROCESS() {

if [ -z "$PARENT" ];then

ps -ef|grep -E '[a-zA-Z]+\s+[0-9]+\s+1\s.+iNotifyMinifyGzip.?sh'|\

awk '{print $2}'|xargs kill -9>/dev/null 2>&1

PARENT=1

while read D T E F;do

# echo "DEBUG - [$D $T] $E: $F"&&continue

[[ "$E" =~ ISDIR ]]||[ "$D $T $F" = "$PROCESSED" ]||\

[[ "${F%/*}" =~ $EXCLUDE_SUBDIRS ]]||[[ "${F##*/}" =~ \.($EXCLUDE_EXTENSIONS)$ ]]&&continue

PROCESSED="$D $T $F"

if [[ ! "$E" =~ (DELETE|MOVED_FROM) ]]&&[[ "$F" =~ \.($MONITOR_EXTENSIONS)$ ]];then

[[ "$E" =~ CLOSE ]]&&[ -f "$F.gz" ]&&continue

[[ "$E" =~ ATTRIB ]]&&eval [ "$(stat -c"%Y != %Z" "$F" 2>/dev/null) 2>/dev/null" ]&&continue

echo "[$D $T] $E: $F"

rm -f "$F.gz">/dev/null 2>&1

continue

TMPF="${F//\//\~}"&&TMPF="/tmp/iNotifyMinifyGzip_$RANDOM_${TMPF:0:227}.gz_"

if [[ "$F" =~ \.(htm|html)$ ]];then

if [ "$(grep -Ec "<\/(div|html|loc|script)>" "$F" 2>/dev/null)" = 0 ];then

rm -f "$F" "$F.gz" "$F"*old>/dev/null 2>&1

echo "Removed invalid html page cache from '$F*'"

continue

FIND_ROOT "$F"

FIND_ASIDE "$F"

if [[ "$F" =~ $ASIDE_ROOT/_index(_slash)?.html$ ]]||

[[ ! "${ASIDE_CACHED[@]}" =~ "$ASIDE_ROOT:" ]]&&

[ -e "$ASIDE_ROOT/${F##*/}" ];then

BUILD_CACHE "$ASIDE_ROOT/${F##*/}"

ASIDE=

if [[ "$F" =~ /_index(_slash)?.html$ ]]&&[[ "${ASIDE_CACHED[@]}" =~ "$ASIDE_ROOT:1" ]];then

ASIDE=$(perl -s0777pe\

's/(<aside id=.?($L0).?.+?>).+?(<\/aside>)/"$1 Loading...

<a href=\"\/wp-content\/cache\/$L5-$2.html\"

onclick=\"window.location.reload(true)\"> ".pretty($2)."<\/a>

$3$L1$2$L2$L5-$2$L3$L6$L4"/eigs;sub pretty {my $i = shift;$i =~ s/(-\d+$|_|-)/ /g;

return join("", map(ucfirst, split(/(\w+)/, $i)))}'\

-- -L0="$L0" -L1="$L1" -L2="$L2" -L3="$L3" -L4="$L4" \

-L5="${ASIDE_ROOT##*/}" -L6="${ASIDE_CACHED_TS[$DOC_ROOT]}" "$F" 2>/dev/null)

if [ "$ASIDE" != "" ];then

if [ "$SLIDESHOW" != "" ];then

ASIDE=$(echo "$ASIDE"|perl -s0777pe\

's/<script.+src=.?.+?slideshow-shortcode.+?.?><\/script>//i' 2>/dev/null)

MINIFIED=$(echo "$ASIDE"|php "$MINIFY_CLI" -t html -d"$DOC_ROOT")

if [ "$MINIFIED" != "" ];then

echo "$MINIFIED"|gzip -c$GZIP_COMPRESSION>"$TMPF"

else

echo "$ASIDE"|gzip -c$GZIP_COMPRESSION>"$TMPF"

else

MINIFIED=$(php "$MINIFY_CLI" -t html -d"$DOC_ROOT" "$F")

if [ "$MINIFIED" != "" ];then

echo "$MINIFIED"|gzip -c$GZIP_COMPRESSION>"$TMPF"

else

gzip -c$GZIP_COMPRESSION "$F">"$TMPF"||rm -f "$TMPF">/dev/null 2>&1

rm -f "$F"*old>/dev/null 2>&1

elif [[ "$F" =~ \.js$ ]]&&[[ ! "$F" =~ \.min\.js$ ]];then

FIND_ROOT "$F"

MINIFIED=$(php "$MINIFY_CLI" -t js -d"$DOC_ROOT" "$F")

if [ "$MINIFIED" != "" ];then

echo "$MINIFIED"|gzip -c$GZIP_COMPRESSION>"$TMPF"

else

gzip -c$GZIP_COMPRESSION "$F">"$TMPF"||rm -f "$TMPF">/dev/null 2>&1

elif [[ "$F" =~ \.(scss|css)$ ]]&&[[ ! "$F" =~ \.min\.(scss|css)$ ]];then

FIND_ROOT "$F"

MINIFIED=$(php "$MINIFY_CLI" -t css -d"$DOC_ROOT" "$F")

if [ "$MINIFIED" != "" ];then

echo "$MINIFIED"|gzip -c$GZIP_COMPRESSION>"$TMPF"

else

gzip -c$GZIP_COMPRESSION "$F">"$TMPF"||rm -f "$TMPF">/dev/null 2>&1

else

gzip -c$GZIP_COMPRESSION "$F">"$TMPF"||rm -f "$TMPF">/dev/null 2>&1

mv -f "$TMPF" "$F.gz">/dev/null 2>&1||rm -f "$F.gz">/dev/null 2>&1

elif [ -f "$F.gz" ];then

if [[ "$E" =~ (DELETE|MOVE) ]]&&[[ "$F" =~ /_index(_slash)?.html$ ]];then

find "${F%/*}" -maxdepth 1 -type d -name "comment-page*" -o -name "page"|while read OLD;do

rm -fr "$OLD">/dev/null 2>&1

echo "Removed stale caches from '$OLD'"

done

echo "[$D $T] $E: $F"

rm -f "$F.gz" "$F"*old>/dev/null 2>&1

done

}

[ "$(which gzip 2>/dev/null)" = "" ]&&echo "Error: Unable to find 'GZIP CLI'."&&exit 1

[ "$(which php 2>/dev/null)" = "" ]&&echo "Error: Unable to find 'PHP CLI'."&&exit 1

[ "$(which perl 2>/dev/null)" = "" ]&&echo "Error: Unable to find 'PERL CLI'."&&exit 1

[ "$(which inotifywait 2>/dev/null)" = "" ]&&echo "Error: Unable to find 'inotify-tools'."&&exit 1

[ ! -e "$MINIFY_CLI" ]&&echo "Error: Unable to find '\$MINIFY_CLI'."&&exit 1

[[ "$GZIP_COMPRESSION" =~ [0-9] ]]&&[ "$GZIP_COMPRESSION" -le 9 ]||GZIP_COMPRESSION=9

[ "$(echo $GZIP_ROOTS)" = "" ]&&echo "Error: Please specify some '\$GZIP_ROOTS'."&&exit 1

for i in ${GZIP_ROOTS//\\n/};do [ ! -e "$i" ]&&echo "Error: Path does not exists '$i'."&&exit 1;done

[ "$(echo $EXCLUDE_SUBDIRS)" = "" ]&&EXCLUDE_SUBDIRS="/dev/null"||

EXCLUDE_SUBDIRS=$(echo $EXCLUDE_SUBDIRS|sed 's/ /|/g')

[ "$(echo $EXCLUDE_EXTENSIONS)" = "" ]&&EXCLUDE_EXTENSIONS="/dev/null"||

EXCLUDE_EXTENSIONS=$(echo gz gz_ $EXCLUDE_EXTENSIONS|sed 's/ /|/g')

MONITOR_EXTENSIONS=$(echo htm html scss css js $MONITOR_EXTENSIONS|sed 's/ /|/g')

CACHE_ASIDE_REGEX=$(echo $CACHE_ASIDE|sed 's/ /|/g')

EVENTS="attrib,create,modify,close_nowrite,move,delete"

ps -ef|grep iNotifyMinifyGzip.sh|grep -v grep|grep -v $$|awk {'print $2'}|xargs kill -9>/dev/null 2>&1

ps -ef|grep "inotifywait -mre$EVENTS"|

grep -v grep|awk {'print $2'}|xargs kill -9>/dev/null 2>&1

rm -f /tmp/iNotifyMinifyGzip_*>/dev/null 2>&1

L0=$CACHE_ASIDE_REGEX

L1='<script>(function($) {$( "#'

L2='" ).load( "/wp-content/cache/'

L3=".html?${0##*/}="

L4='");})(jQuery);</script>'

GZIP_ROOTS_ARRAY=(${GZIP_ROOTS//\\n/})

CACHE_ASIDE_ARRAY=(${CACHE_ASIDE//\\n/})

declare -A ASIDE_CACHED_TS

inotifywait -mre$EVENTS --timefmt '%F %T' --format '%T %e %w%f'\

--excludei "\.($EXCLUDE_EXTENSIONS)$|($EXCLUDE_SUBDIRS)|(^/.+/$)" $(echo $GZIP_ROOTS)|PROCESS

exit $?

TeaNazaR.com

Speedup WordPress (Nginx’s Gzip_static + Minify + W3 Total Cache)

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