Giving LWP its well deserved golden watch

Examine the history of LWP, consider 4 alternatives and discuss some features of the various alternatives.

Transcript

1. Giving LWP::UserAgent ! Its Well Deserved ! Golden Watch! ! ! Mark Allen! mrallen1@yahoo.com! @bytemeorg! http://byte-me.org! https://github.com/mrallen1! https://speakerdeck.com/mrallen1!
2. Talk Goals! •  HTTP client history! •  Compare alternatives! •  Choose a client with a good fit for your problem space!
3. HTTP client history! Pop quiz:! ! Who wrote and maintained libwww-perl for Perl 4?!
4. HTTP client history! Anyone?! !
5. HTTP client history! Anyone?! ! Bueller?! !
6. HTTP client history!
7. HTTP client history! Roy Fielding!
8. HTTP client history! Roy Fielding! Invented REST ! Apache Foundation Chair!
9. HTTP client history! Perl  5  released  (Oct  1994)   LWP  (for  Perl  5)  0.01  (Jul  '95)   CPAN  introduced  (Oct  '95)   LWP::UserAgent  sugar  (May  2001)   Handlers   (Sep  2008)  
10. HTTP client history! We owe LWP a debt because Gisle and others pioneered scripted user agents...!
11. HTTP client history! ...and a lot has changed.!
12. LWP alternatives! •  Why?! •  Alternatives:! •  Mojo::UserAgent! •  HTTP::Tiny! •  Furl! •  LWP::Curl!
13. LWP alternatives! 1.  Performance / Speed!
14. LWP alternatives! 1.  Performance / Speed! 2.  Improved SSL support!
15. LWP alternatives! 1.  Performance / Speed! 2.  Improved SSL support! 3.  Features!
16. LWP alternatives! 1.  Performance / Speed! 2.  Improved SSL support! 3.  Features! 4.  Syntactic sugar!
18. Pop quiz:! ! What does Rutherford B. Hayes have to do with HTTP client libraries?!
19. Requests per second! 0   2000   4000   6000   8000   10000   12000   14000   16000   18000   Simple  GET   100k  GET   POST   hQps://github.com/mrallen1/perl-­‐UA-­‐Bench  
20. LWP alternatives! •  Mojo::UserAgent! •  HTTP::Tiny! •  Furl! •  LWP::Curl!
21. Mojo::UserAgent! •  Built in DOM, XML, JSON parsing! •  Pure perl - 5.8 and later! •  Mind blowing one-liners!
22. Mojo::UserAgent! •  SSL, cookies and! •  Thin object layer (Mojo::Base)! •  Maybe don't want the rest of the Mojolicious stack!
24. Mojo::UserAgent! perl -C -S -MTime::Piece -Mojo -E '$i=1; mkdir $dir=$ENV{HOME}! ."/tunes.io/".localtime->ymd; ! say $_->text and g($_->attrs("href"))! ->max_message_size(25600000)! ->content->asset->move_to! ("$dir/${\$i++} ${\$_->text}.mp3") for g("tunes.io")->dom("ul a")->each'!
25. Mojo::UserAgent! perl -C -S -MTime::Piece -Mojo -E '$i=1; mkdir $dir=$ENV{HOME}! ."/tunes.io/".localtime->ymd; ! say $_->text and g($_->attrs("href"))! ->max_message_size(25600000)! ->content->asset->move_to! ("$dir/${\$i++} ${\$_->text}.mp3") for g("tunes.io")->dom("ul a")->each'!
26. Mojo::UserAgent! perl -C -S -MTime::Piece -Mojo -E '$i=1; mkdir $dir=$ENV{HOME}! ."/tunes.io/".localtime->ymd; ! say $_->text and g($_->attrs("href"))! ->max_message_size(25600000)! ->content->asset->move_to! ("$dir/${\$i++} ${\$_->text}.mp3") for g("tunes.io")->dom("ul a")->each'!
27. Mojo::UserAgent! perl -C -S -MTime::Piece -Mojo -E '$i=1; mkdir $dir=$ENV{HOME}! ."/tunes.io/".localtime->ymd; ! say $_->text and g($_->attrs("href"))! ->max_message_size(25600000)! ->content->asset->move_to! ("$dir/${\$i++} ${\$_->text}.mp3") for g("tunes.io")->dom("ul a")->each'!
28. Mojo::UserAgent! perl -C -S -MTime::Piece -Mojo -E '$i=1; mkdir $dir=$ENV{HOME}! ."/tunes.io/".localtime->ymd; ! say $_->text and g($_->attrs("href"))! ->max_message_size(25600000)! ->content->asset->move_to! ("$dir/${\$i++} ${\$_->text}.mp3") for g("tunes.io")->dom("ul a")->each'!
29. Mojo::UserAgent! perl -C -S -MTime::Piece -Mojo -E '$i=1; mkdir $dir=$ENV{HOME}! ."/tunes.io/".localtime->ymd; ! say $_->text and g($_->attrs("href"))! ->max_message_size(25600000)! ->content->asset->move_to! ("$dir/${\$i++} ${\$_->text}.mp3") for g("tunes.io")->dom("ul a")->each'!
30. LWP alternatives! •  Mojo::UserAgent! •  HTTP::Tiny! •  Furl! •  LWP::Curl!
31. HTTP::Tiny! •  Comes with core perl (5.14)! •  Fulfills "::Tiny" promise! •  Easy SSL configuration! •  No request / response objects (see HTTP::Thin)! •  Pure perl!
32. HTTP::Tiny! •  No request / response objects (see HTTP::Thin)! •  Pure perl! •  I use this one 90% of the time!
33. LWP alternatives! •  Mojo::UserAgent! •  HTTP::Tiny! •  Furl! •  LWP::Curl!
34. Furl! •  Japanese Perl community! •  Request / response objects! •  HTTP response parser uses XS (if possible)!
35. Furl! •  Easy SSL configuration! •  Cookie support! •  Low level HTTP access if desired!
36. LWP alternatives! •  Mojo::UserAgent! •  HTTP::Tiny! •  Furl! •  LWP::Curl!
37. LWP::Curl! •  Curl is a great HTTP client library, but terrible interface.! •  LWPish interface on top of Net::Curl!
38. LWP::Curl! •  Super fast! •  2000% faster than LWP! •  100% faster than Furl! •  No request/response objects! •  No cookie support! •  LWP::Protocol::Net::Curl!
39. Fit your problem space!
41. Can you deploy XS?!
42. Do you { want | need } ! built in JSON support?!
43. Do you { want | need } ! built in JSON support?!
44. Does your other code expect HTTP::Response objects?!
45. Summary! •  LWP has been around as long as Perl itself.! •  There are a lot of great HTTP client choices, so compare alternatives.! •  Choose a client with a good fit for your problem space!
46. Thank you!!