#cache

9 one-liners with this tag.

Check if LiteSpeed Cache serves a page from cache

$curl -s -o /dev/null -D - https://example.com/ | grep -iE "^(server|x-litespeed-cache[a-z-]*):"

harmlessLiteSpeed

Check the browser caching headers of a file

$curl -sI https://example.com/wp-includes/css/dist/block-library/style.min.css | grep -iE "^(cache-control|expires|etag|last-modified|age):"

Check the Redis Object Cache status in WordPress

$wp redis status --path=/var/www/vhosts/example.com/httpdocs

harmlessRedis and Memcached

Flush a single Redis database (FLUSHDB)

$redis-cli -n 0 FLUSHDB

destructiveRedis and Memcached

Flush all Redis databases (FLUSHALL)

$redis-cli FLUSHALL

destructiveRedis and Memcached

Flush Memcached completely (flush_all)

$printf 'flush_all\nquit\n' | nc 127.0.0.1 11211

cautionRedis and Memcached

Flush the WordPress object cache

$wp cache flush --path=/var/www/vhosts/example.com/httpdocs

Purge LiteSpeed Cache for a WordPress site with WP-CLI

$wp litespeed-purge all --path=/var/www/vhosts/example.com/httpdocs

cautionLiteSpeed

Query a DNS record directly at the authoritative nameserver

$dig @$(dig +short example.com NS | head -n 1) example.com A +norecurse +short