My understand of why nodejs

February 02, 2012

Thread per connection VS Event loop

Advantage:
more memory consumption thread blocked waiting for I/O operation

  • Q: So why not Event loop, callbacks, non-blocking I/O
  • A: cultural and infrastructural.
    1. cultural, we thought that the I/O should be blocking.
    2. infrastructural
      • single threaded event loops require I/O to be non-blocking, but most libraries are not.
      • too much options: EventMachine, Twisted
  • Q: Why javascript?
  • A: javascript has the following features:
    1. Anonymous functions, closures. – easy to create callback
    2. Only one callback at a time. – only one callback at a time
    3. I/O through DOM event callbacks –non-blocking
    4. promise: a promise is a kind of EventEmitter which emits either “success” or “error”. (But not both.)

readable angular tests

In this post, I'll provdes some tips to create readable angular test.### General Tips#### Use describe or nested describe to structure sp...… Continue reading

Exposing event stream from monolith

Published on September 18, 2017