Author Archives: Jay Jay

About Jay Jay

Hi there. My name is John Elliot V. My friends call me Jay Jay. I talk about technology on my blog at blog.jj5.net and make videos about electronics on my YouTube channel @InTheLabWithJayJay.

Networking

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I have 50 computers (with IP addresses). 26 of them are on-prem virtual machines, 12 of them are AWS EC2 instances, 4 of them are laptops, 2 are Raspberry Pis, 1 is a WiFi router, and the last 5 are towers, being workstations/servers connected to a KVM of some type.

I guess I have some other things with IP addresses too, like a few smartphones, an iPod touch, my Rigol scope which has Ethernet support, and my Chumby and various power supplies which have WiFi support.

I had a situation the other day where I couldn’t remember what one of my computers was for or did…

Things You Should Know About Databases

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This one popped up in my feed today: Things You Should Know About Databases. My favourite quote was this one:

The SQL standard defines 4 standard isolation levels these can and should be configured globally (insidious things can happen if we can’t reliably reason about isolation levels).

It’s so important to know what isolation level is applicable to your connection/transaction.