Running distributed cron jobs using Kubernetes
Good blog post by the engineering team at Stripe on using Kubernetes to run a distributed cron scheduler https://stripe.com/blog/operating-kubernetes
Technology
How data streams work (AKA queue design)
Good blog post by Timothy Downs on how queues and data streams work with a layman example at https://hackernoon.com/introduction-to-redis-streams-133f1c375cd3 Quoting the example here We have a very...
Overheard : Failure
When you do your job well, no one notices. When you screw up the whole internet notices – Julia Grace during a great keynote speech at...
HOW TO : Query varnishlogs to show backend server
Command parameters for varnishlog to view the backend server that is processing the request. In this particular case, I wanted to see the request URL and...
HOW TO : Check websockets using curl
Found this good article by Mark Huot regarding using curl to check websocket servers at http://www.thenerdary.net/post/24889968081/debugging-websockets-with-curl curl -i -N -H “Connection: Upgrade” -H “Upgrade: websocket” -H “Host:...
HOW TO : Capture ftp passwords using tcpdump
On a server that is running either the FTP client on server, you can capture the ftp password using tcpdump by tcpdump -A port ftp