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

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