Chp 5

To add to the definitions of a fault tolerant system(as mentioned in the introduction of this chapter), I was reminded of a research paper I came across a few days back which talked about all software faults resulting from design errors, and the changing paradigm presented in this paper. I like the intuitive way the hierarchy of tasks has been organized and described about, and in many ways it does parallel most computing problems (or even problems we come across in our daily life). The distinction between errors, exceptions etc has been described very well, and I am somehow reminded of the programming model of Java (which I am hugely familiar with) which is different from that of Erlang. The division into supervior and worker processes somehow seems similar to concepts in distributed computing where the goal is divide a task among n processors. Overall, this chapter has been written in a simple and concise manner, and the among other things, the description of well behaved functions stands out in this work.