gshipley at gmail.com
Sat Dec 7 19:30:56 MST 2013
And mobile using titanium. Throw in mongodb and you have full stack Java
script... It was hard for me to accept as well since developers as a whole
shit on it for the last 15 years. Now it powers Walmart server side and
other large companies.
In fact, I am writing a book on full stack Java script that will published
On Dec 7, 2013 7:00 PM, "Jonathan Duncan" <jonathan at bluesunhosting.com>
> server-side stuff in JS.
> On Sat, Dec 7, 2013 at 5:37 PM, S. Dale Morrey <sdalemorrey at gmail.com
> > I've been working on a sparetime project for a few weeks and had
> > mostly coded up in Java, then realized that perhaps I was trying to
> > re-invent the wheel so I googled for a library to do the heavy lifting
> > me.
> > Imagine my surprise when many of my queries for xyz java library started
> > Just for fun I decided to look at the effort involved in remaking my
> > When I found that 90+ % of my prototype was available as library
> > and it was more or less a matter of gluing them together. I decided to
> > ahead and just give it a try in js.
> > Ajax-like website helpers scripts before we ever coined the terms Comet
> > Ajax. Nevertheless I've always viewed it as a tool for making shiny bits
> > and/or using it as a scripting language for controlling other programs.
> > other words I've always seen it as being firmly as part of the view
> > component. I never really viewed it as something for serious
> > workloads. Until now.
> > I finished both prototypes to the same level. With my curiosity piqued I
> > decided to let them both rip on separate instances in the same AWS
> > availability zone, same EC2 machine types (t1.micro).
> > The job is just to hash words from a dictionary list (I'm making a
> > rainbow table) using a few different hashing algorithms after which I
> > be doing an analysis with map reduce but neither the the map reduce nor
> > analysis steps are included in this part. This is just a feed generation
> > step.
> > I just wanted to test raw hashing power in this case.
> > I added a loop counter to the main loop and put in stopwatch function to
> > ensure identical runtimes.
> > Here are my results after 2 minutes of runtime...
> > Java 7 J2SE : 1,000,079
> > The numbers represent how many times it made it through the final loop
> > where it would normally have written out a csv. Thus there were several
> > steps. Read a fixed list, them run SHA256, Scrypt and Ripe-MD160 on each
> > unit. There was no output step so as to rule out filesystem access times.
> > This isn't meant to be a head to head comparison.
> > The Node.js version is (to the best of my knowledge) single threaded and
> > the Java version is running on a thread per core model (even though the
> > test box is 1.5 cores). Looking back, going with thread per core may
> > gimped the Java version because of list contention, and/or context
> > switching penalties so I do doubt the numbers here are anything
> > final. In fact I ran it for 5 - 10 - 15 and 30 mins as well and once JIT
> > kicked in and moved some stuff to metal, Java slightly matched (at 15
> > that's so computationally heavy? A 50% performance improvement over Java
> > in a short interval, especially when I have not done anything to
> > used to know.
> > It also showed me something about my own internal biases.
> > I find it odd how my thinking has evolved over time.
> > I used to be a computer programmer who had a good/decent familiarity
> with a
> > broad range of languages and I would always try to select the best tool
> > the job taking into account the cost of developer time vs cpu time.
> > Over the past 4 or 5 years I've been so heavy into Java (because that's
> > what employers want), that I think I may have evolved into a Java
> > programmer.
> > This experience has shown me that it might be time to broaden my horizons
> > and again embrace the "right tool for the right job" approach I used to
> > have, rather than the Swiss Army Chainsaw habits I've picked up from
> > programming in Java.
> > So what do you think? Have you looked at any languages for purposes you
> > had previously disregarded? What were your thoughts?
> > /*
> > PLUG: http://plug.org, #utah on irc.freenode.net
> > Unsubscribe: http://plug.org/mailman/options/plug
> > Don't fear the penguin.
> > */
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