HTTP provides two ways for servers to control client-side caching of page components:
This breaks down as follows:
| import glob | |
| import pandas as pd | |
| fds = [] | |
| for f in glob.glob("**/*.csv"): | |
| fds.append(pd.read_csv(f)) | |
| frame = pd.concat(fds) |
• 45-minute systems interview, focus on responding to real world problems with an unhealthy service, such as a web server or database. The interview will start off at a high level troubleshooting a likely scenario, dig deeper to find the cause and some possible solutions for it. The goal is to probe your knowledge of systems at scale and under load, so keep in mind the challenges of the Facebook environment.
• Focus on things such as tooling, memory management and unix process lifecycle.
More specifically, linux troubleshooting and debugging. Understanding things like memory, io, cpu, shell, memory etc. would be pretty helpful. Knowing how to actually write a unix shell would also be a good idea. What tools might you use to debug something? On another note, this interview will likely push your boundaries of what you know (and how to implement it).
Interview is all about taking an ambiguous question of how you might build a system and letting
System: Debian/Ubuntu/Fedora. Might work for others as well.
As mentioned here, to update a go version you will first need to uninstall the original version.
To uninstall, delete the /usr/local/go directory by:
| # Crontab | |
| # once per week backup, move to "/backup" gzip it, delete everything but the latest 5 files | |
| 0 4 * * 1 /opt/gitlab/bin/gitlab-ci-rake gitlab:backup:create CRON=1 && mv /var/opt/gitlab/backups/* /backup/ && cd /backup && gzip *.tar && rm `ls -t | awk 'NR>5'` |