Keeping SSH connections alive

It’s actually fairly simple. In your SSH config file, you add this:

Host *
    ServerAliveInterval 240

The * after the host can be whatever host you want it to apply to, and *simply means to apply this to all hosts. So you could also apply it this way:

Host example.com
    ServerAliveInterval 240

Also, if you aren’t sure where your SSH config file is, on a UNIX based system, it’s generally in ~/.ssh/config.

Technology behind photos

So, we looked at JPEG image encoding, which is a very popular image codec. Especially since our image is going to be blurred heavily on the client, and thus band-limiting our image data, JPEG should compress this image quite efficiently for our purposes. Unfortunately, the standard JPEG header is hundreds of bytes in size. In fact, the JPEG header alone is several times bigger than our entire 200-byte budget. However, excluding the JPEG header, the encoded data payload itself was approaching our 200 bytes. We just needed to figure out what to do about that pesky header!

The technology behind preview photos

Performance – Or how I learned to evaluate better

1. Given what I know of this person’s performance, and if it were my money, I would award this person the highest possible compensation increase and bonus.
2. Given what I know of this person’s performance, I would always want him or her on my team.
3. This person is at risk for low performance.
4. This person is ready for promotion today.

From the Washington Post