Dogcows Code - chaz/talk-event-driven-programming-in-perl/blob - notes.txt

   1
   2 TODO:
   3 - Get more knowledge about the Reactor front ends.
   4 - Throw up some examples in some slides (#5).
   5 - Add a section at the end to get out of the weeds and put a bit ol' bow on it.
   6
   7 Topics:
   8
   9 1. Evolution of event-driven programming:
  10 X Wait for a key press or line of text.
  11 X Interrupts (hardware and software).
  12 X Modern event loops
  13
  14 2. Types of events in modern applications:
  15 X IO
  16 X Timer
  17 X User input
  18 X Signal
  19 X Anything that can spontaneously happen in the real world.
  20
  21 3. How to write a modern event-loop (reactor style).
  22 X kernel facilities (poll, select, etc.)
  23
  24 4. List of already-built reactors.
  25 X EV
  26 X Glib
  27 X ...
  28
  29 5. Event-driven programming in Perl
  30 X AnyEvent
  31 X IO::Async
  32 X Mojo::IOLoop
  33 X POE
  34
  35 6. Special considerations
  36 X Exceptions in event-driven code.
  37 X SIGPIPE, EPIPE - might have more to do with long-lived processes rather than
  38   just event-driven programming, but still something to watch out for...
  39 X You should almost always check the return code of your syscalls to see if they succeeded or not.
  40
  41 7. Promises:
  42 X Future
  43 X Future::AsyncAwait
  44 X Future::Utils
  45
  46 8. Real-world uses for event-driven applications:
  47 - Webhooks
  48 - PubsubHubbub
  49 - msg queue
  50
  51
  52
  53
  54 Other topics:
  55 X What is event-driven programming?
  56 X Reactor: event loop that can receive multiple types of events and
  57   demultiplex them, delivering them to appropriate handlers.
  58 - C10k problem
  59 - EDA (event-driven architecture)
  60 X Benefits of Event-driven
  61 X How to debug event-driven code.
  62
  63 Traditional programs:
  64 - CGI - web server calls your program, and your program does its thing and
  65   finishes.
  66 X filters - grep, less, sed, etc. Like a function, the program takes its input
  67   and produces some output.
  68
  69 Perl features:
  70 - first-class subroutines
  71
  72 - Can mix traditional architecture with event-driven (like docker that
  73   provides both an http and command-line interface.
  74