Sindbad~EG File Manager

# Setup var defaults
set $no_cache "0";

if ($http_user_agent !~* (netEstate|CCBot|MBCrawler|Barkrowler|UptimeRobot|Nimbostratus-Bot|SemrushBot|YandexBot|YandexMobileBot|AhrefsBot|opensiteexplorer|Exabot|MJ12bot)) {
    set $no_cache "1";
}

# If non GET/HEAD, don't cache & mark user as uncacheable for 1 second via cookie
if ($request_method !~ ^(GET|HEAD)$) {
    set $no_cache "1";
}

#if ($request_filename !~* \.(html|htm|php|php5)$ ) {
#    set $no_cache "1";
#}

#if ($http_cookie != "") {
#    set $no_cache "1";
#}

# Drop no cache cookie if need be
# (for some reason, add_header fails if included in prior if-block)
#if ($no_cache = "1") {
#    add_header Set-Cookie "_mcnc=1; Max-Age=2; Path=/";
#    add_header X-Microcachable "0";
#}

# Bypass cache if no-cache cookie is set
#if ($http_cookie ~* "_mcnc") {
#    set $no_cache "1";
#}

# Bypass cache if flag is set
proxy_no_cache $no_cache;
proxy_cache_bypass $no_cache;

# Set cache zone
proxy_cache microcache;

proxy_cache_lock on;

# Set cache key to include identifying components
proxy_cache_key $scheme$host$request_method$request_uri;

# Cache 404 responses fro 30 minutes
proxy_cache_valid 404 30m;

# Only cache valid HTTP 200 responses for 5 seconds
proxy_cache_valid 200 5s;

# Only cache valid HTTP 200 responses for 5 seconds
proxy_cache_valid 301 5s;

# Serve from cache if currently refreshing
proxy_cache_use_stale updating;

# Set files larger than 2M to stream rather than cache
proxy_max_temp_file_size 2M;