Life with open mind

I gave a talk at RubyKaigi 2014: "Rails Girls: Not Only for Girls". Rails Girls: Not Only for Girls - RubyKaigi 2014 from...

I gave a presentation at JAWS Days 2014 and talked with a title of "What makes AWS invincible?" A moderator of the session, @co...

Everyone uses /etc/hosts to manage names of several servers. It doesn't involve DNS look-ups and doesn't have a single-point-of-fail...

Congratulations, graduates from University of Tsukuba! It was three years ago when I finished my master's course and started working. I...

Have you heard of the Ackermann function ? This function is simple, but if you try to calculate it naively, soon the computational cost ...

MySQL is one of the most popular RDBMS in the world, however, there is no out-of-box backup method. mysqldump is not sufficient when we mix ...

I'm starting a blog to share my interests. Primary topics will be computers, programming, networking, and transport. I live in Yokoh...