Articles tagged 'systems'

a Virtual Load Balancer

IP-layer load balancing without an actual load balancer, by abusing (well, extending) ARP.

CQRS for Blue-Green Deployment

Bringing databases into the Blue-Green Deployment process by using CQRS and idempotent work queues.

Complete Containers

I like the idea of ephemeral, immutable servers in light containers but what I really want is to put the entire state in a Git repo ...

Deserialize / Alter / Serialize: an Antipattern?

I was talking to $PERSON from $BIG_COMPANY the other day, and they happened to mention that around 80% of their CPU time was spent on serializing and deserializing data ...

ShellShock: 'bash' vulnerability

A vulnerability in 'bash', popularly called 'ShellShock' has been all over the news this week. I've spent a lot of time talking to clients about it over the last couple of days, and checking up on systems, so I thought I'd write some of those conclusions down.

Nginx proxy_pass to upstream Django always giving 400 Bad Request

I was setting up Django using Gunicorn behind an Nginx proxy the other day, and hit this problem which took a while to find an answer for ... all Django would do was return `400 Bad Request`

Make your own Client-side Certificates with a Pseudo CA

I've used this authentication method on a couple of different client projects so far, so I thought it might be useful to write up a quick explanation of how it works.

More Trickiness With SSH (Comments)

the only useful blog post comments I ever got before I turned them off forever

FreeTDS without udp 1434

a quick note for anyone trying to do FreeTDS through a tunnel or a firewall pinhole

More Trickiness With SSH