The bane of being a polyglot developer

In the recent months, there has been a bitter realization for me as I have given quite a few interviews as I was looking for a job. My resume was decorated with most of what I have been doing as part of my earlier job as well as what I did in my spare time. However where I failed were the areas that require mugging up the most. Consider the following questions:

• What is the difference between get and load methods in hibernate?
• What are the different active record validations?
• What are the different types of active resource nesting?
• What is different between event handling and event bubbling?

Answers to these are no far than a google search or documentation lookup away but in all these questions, I wore a blank look. The first one was a hibernate question and after searching for answers, I came to know that it was actually one of the most popular hibernate interview questions. The other two were rails questions, but since I have done very little professional ruby work, I could not explain the same. The last one was a jQuery killer, appearing after I had rated myself 5/10 in javascript and was again nothing, but technology buzzword.

Very few interviewers were interested in asking something challenging questions in scalability, design pattern or architectural issues. This really leaves me angry at recruiters only looking to fill up position involving technology X people and also at myself at allowing myself to stray. The real trouble that I feel is that I am maybe easily persuaded. I started with java, then moved over to j2ee and for a time felt that I had nailed it when I finally deployed a ejb 2.0 environment. However, then came spring and hibernate and I felt that they were the actual mecca and medina for me. However, later on I was sucked by the very vocal ruby community that said, 'wait a minute, you a java guy, we can make you 10X productive'. Duh!
Then came a string of languages, python, .net, scala, f# and whatever the titbits that I had left - from playing with arduinos at home to mainframes at work (and I still harbor desire to purchase a raspberry pi one day and do more cool hacks on it).
However, these plethora of languages and technologies have taken a trool on my confidence, especially when I come across people who only know or like a single technology and are comfortable in it.
But that's not for me as I thrive on change. For example I am writing this rant after 10 pm and today I've:

• studied redis in the morning
• tried to implement a scalable solution on redis to handel >10 million records
• did AdWords and facebook api integration into a rails4 app in office in the day
• will be writing/improving the draft chapters of the upcoming book that I am writing in robot framework.

I think Steve yegge captures some of my deficiencies clearly as I am an advance learner in a lot of technology that I have on my resume, and I guess that's the way it is going to be in the near future.