“First, solve the problem. Then, write the code.” (John Johnson)
http://www.javais.cool :” There are many resources on news sites and blogs that carry valuable insights for your projects. Some are already well known, some a bit less and together they will keep you on the right track. Here are our favorites:”
In Git, you can’t commit empty folders, because Git does not actually save folders, only files. You’ll have to create some placeholder file inside those directories, if you actually want them to be “empty”.
You could create a empty .gitignore file inside each empty folder. I find this confusing, since the goal is to keep the empty directories, not ignore them or some files inside of them.
With the following script you can create a file named “.gitkeep” inside every empty folder. The filename has no meaning for git, but it makes it purpose clear.
Recently I did not receive a response, after calling a webapp. There was no entry/error in the Application log. It was wired.
Setup: Caller → Apache → Tomcat with Webapp
After inspecting the apache logs, I found the following entries: “AH00992: ajp_read_header: ajp_ilink_receive failed”. I could not reproduce them, they just happened. As it turn out, my image of “my” setup was wrong:
Real Setup: Caller → Apache → Firewall → Tomcat with Webapp
The firewall kept droping the connection. No reason whatsoever. Since I have no controll over the firewall, I modified the timeouts of the http and the application server:
For Apache HTTP + MOD_PROXY: ProxyPass Directive
In Tomcat: Just set the “connectionTimeout” in the AJP connector. Source: JK Timeout Attributes -> Connection Pools and Idle Timeouts
“Disable WebRTC in Your Web Browser! WebRTC (Web Real-Time Communication) is an API definition drafted by the World Wide Web Consortium (W3C) that supports browser-to-browser applications for voice calling, video chat, and P2P file sharing without plugins. WebRTC can disclose your Local IP Addresses and making fingerprints of your Media Devices.”
Here’s a blogpost about the DELL T20: Dell PowerEdge T20 with Xeon E3-1225v3 CPU
Extract: Getting the power consumption with Linux below 15 Watt
Add the file
And run sudo udevadm trigger. Afterwards,
cat /sys/class/scsi_host/host0/link_power_management_policy should return min_power.
- google drive
- version control
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