Squid configuration for reverse proxy and caching for store

squid.conf

#Recommended minimum configuration:

acl manager proto cache_object
acl localhost src 127.0.0.1/32
acl to_localhost dst 127.0.0.0/8
acl localnet src 0.0.0.0/8 192.168.100.0/24 192.168.101.0/24
acl SSL_ports port 443
acl Safe_ports port 80  	# http
acl Safe_ports port 21		# ftp
acl Safe_ports port 443		# https

acl CONNECT method CONNECT

dns_v4_first on

http_access allow manager localhost
http_access deny manager
http_access deny !Safe_ports

http_access deny to_localhost
icp_access deny all
htcp_access deny all

cache_dir ufs /var/cache/squid 100 16 256

dns_nameservers 8.8.8.8 8.8.4.4

http_port 3128

# access_log access.log squid

#Suggested default:
refresh_pattern ^ftp:		1440	20%	10080
refresh_pattern ^gopher:	1440	0%	1440
refresh_pattern -i (/cgi-bin/|\?) 0 0% 0
refresh_pattern .		0	20%	4320

# Leave coredumps in the first cache dir
coredump_dir /var/spool/squid3

# Allow all machines to all sites
http_access allow all 

#
# Add any of your own refresh_pattern entries above these.
#
refresh_pattern ^ftp:   1440  20% 10080
refresh_pattern ^gopher:  1440  0%  1440
refresh_pattern -i (/cgi-bin/|\?) 0 0%  0
refresh_pattern .   0 20% 4320