Lucky Orange customer behaviors recording

Lucky Orange is a cool tool for tracking customer behaviors. One of the cool use case is to debug website bugs. Sometime tracing user state that lead to bug is very difficult. Tracking user devices and behaviors before bug occur is priceless.

While clean my small Ubuntu Vbox, I found that journal log too fat (4GB) so I clean it.

https://unix.stackexchange.com/questions/139513/how-to-clear-journalctl

Retain only the past two days:

journalctl --vacuum-time=2d

Retain only the past 500 MB:

journalctl --vacuum-size=500M

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AWS Elasticache Memcached connection

https://docs.aws.amazon.com/AmazonElastiCache/latest/mem-ug/accessing-elasticache.html#access-from-outside-aws http://hourlyapps.blogspot.com/2010/06/examples-of-memcached-commands.html Access memcached https://docs.aws.amazon.com/AmazonElastiCache/latest/mem-ug/GettingStarted.AuthorizeAccess.html Zip include hidden file https://stackoverflow.com/questions/12493206/zip-including-hidden-files phpmemcachedadmin ~ phpMyAdmin or phpPgAdmin ... telnet mycachecluster.eaogs8.0001.usw2.cache.amazonaws.com 11211 stats items stats cachedump 27 100 https://docs.aws.amazon.com/AmazonElastiCache/latest/mem-ug/VPCs.EC.html https://lzone.de/cheat-sheet/memcached VPC ID Security Group ID (sg-...) Cluster: The identifier for the cluster memcached1 Creation Time: The time (UTC) when the cluster was created January 9, 2019 at 11:47:16 AM UTC+7 Configuration Endpoint: The configuration endpoint of the cluster memcached1.ahgofe.cfg.usw1.cache.amazonaws.com:11211 St...

Simulate Fail2ban on Apache request spam with mod_evasive limitipconn ...

https://en.wikipedia.org/wiki/Manchu_alphabet https://en.wikipedia.org/wiki/Sweet_potato https://en.wikipedia.org/wiki/New_World_crops https://www.mdpi.com/journal/energies http://www.cired.net/publications/cired2007/pdfs/CIRED2007_0342_paper.pdf https://www.davidpashley.com/articles/writing-robust-shell-scripts/ trap command https://en.wikipedia.org/wiki/Race_condition https://unix.stackexchange.com/questions/172541/why-does-exit-1-not-exit-the-script exit 1 not work it seem { } brace bound fixed it. cat access_log | cut -d ' ' -f 1 > ip1 sort -n -t. -k1,1 -k2,2 -k3,3 -k4,4 | uniq -c | sort -n -r -s https://unix.stackexchange.com/questions/246104/unix-count-unique-ip-addresses-sort-them-by-most-frequent-and-also-sort-them https://stackoverflow.com/questions/20164696/how-to-block-spam-and-spam-bots-for-good-with-htaccess Code: ------------------------------------------------------------------- #Block Spam Bots and Spam on your website #Block proxies...

Notes Windows 10 Virtualbox config, PHP Storm Japanese, custom PHP, Apache build, Postgresql

cmd => Ctrl + Shift + Enter mklink "C:\Users\HauNT\Videos\host3" "C:\Windows\System32\drivers\etc\hosts" https://www.quora.com/How-to-create-a-router-in-php https://serverfault.com/questions/225155/virtualbox-how-to-set-up-networking-so-both-host-and-guest-can-access-internet 1 NAT + 1 host only config https://unix.stackexchange.com/questions/115464/how-to-properly-set-up-2-network-interfaces-in-centos-running-in-virtualbox DEVICE=eth0 TYPE=Ethernet #BOOTPROTO=dhcp BOOTPROTO=none #IPADDR=10.9.11.246 #PREFIX=24 #GATEWAY=10.9.11.1 #IPV4_FAILURE_FATAL=yes #HWADDR=08:00:27:CC:AC:AC ONBOOT=yes NAME="System eth0" [root@localhost www]# cat /etc/sysconfig/network-scripts/ifcfg-eth1 # Advanced Micro Devices, Inc. [AMD] 79c970 [PCnet32 LANCE] DEVICE=eth1 IPADDR=192.168.56.28 <= no eff => auto like DHCP #GATEWAY=192.168.56.1 #BOOTPROTO=dhcp BOOTPROTO=static <= no eff ONBOOT=yes HWADDR=08:00:27:b4:20:10 [root@localhost www]# ...

Notes on Web and Mobile App Development

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