REST in peace @ Codemotion 2011

REST in peace Rome, March 5th 2011Licensed under CC license

Agenda Rest in a nutshell ESI in a nutshell The uniform interface Pros/Cons Bad APIs ESI + REST ProblemsLicensed under CC license Rome, March 5th 2011

Sorry for the ugly slide. There will be others. Really sorry.Licensed under CC license Rome, March 5th 2011

Lets go!Licensed under CC license Rome, March 5th 2011

Lets go back!Licensed under CC license Rome, March 5th 2011

2000 Fieldings dissertation: REpresentational State Transfer http://www.ics.uci.edu/~fielding/pubs/dissertation/rest_arch_style.htmLicensed under CC license Rome, March 5th 2011

REST in a nutshell:Licensed under CC license Rome, March 5th 2011

REST in a nutshell: 1. Client <> ServerLicensed under CC license Rome, March 5th 2011

REST in a nutshell: 2. StatelessLicensed under CC license Rome, March 5th 2011

Recover and failover paradiseLicensed under CC license Rome, March 5th 2011

What about the user session?Licensed under CC license Rome, March 5th 2011

Must dieLicensed under CC license Rome, March 5th 2011

What about the user cookies?Licensed under CC license Rome, March 5th 2011

Should dieLicensed under CC license Rome, March 5th 2011

Wondering why?Licensed under CC license Rome, March 5th 2011

Wondering why? Send a cookie via FTP. http://www.google.it/search?sourceid=chrome&client=ubuntu&channel=cs&ie=UTF-8&q=ftp+cookies And http://www.ics.uci.edu/~fielding/pubs/dissertation/evaluation.htm#sec_6_3_4_2Licensed under CC license Rome, March 5th 2011

REST in a nutshell: 3. CacheableLicensed under CC license Rome, March 5th 2011

REST in a nutshell: When dealing with safe methods, the response should be able to tell the client, or whatever stands behind the request, how to cache it.Licensed under CC license Rome, March 5th 2011

REST in a nutshell: 4. Layered systemLicensed under CC license Rome, March 5th 2011

REST in a nutshell: 5. Uniform interfaceLicensed under CC license Rome, March 5th 2011

Uniform interface hierarchic resource identification HTTP verbs to perform operations manipulation through representation HATEOASLicensed under CC license Rome, March 5th 2011

Richardson maturity model hierarchic resource identification HTTP verbs to perform operations manipulation through representation HATEOAS Really well explained by Fowler: http://martinfowler. com/articles/richardsonMaturityModel.html#level0Licensed under CC license Rome, March 5th 2011

Richardson maturity model mess hierarchic resource identification HTTP verbs to perform operations HATEOASLicensed under CC license Rome, March 5th 2011

Richardson maturity model 0. mess hierarchic resource identification HTTP verbs to perform operations HATEOASLicensed under CC license Rome, March 5th 2011

0 Using HTTPLicensed under CC license Rome, March 5th 2011

Without giving a f***Licensed under CC license Rome, March 5th 2011

Richardson maturity model 1. 0. mess hierarchic resource identification HTTP verbs to perform operations HATEOASLicensed under CC license Rome, March 5th 2011

1 mytastyproduct.com/users mytastyproduct.com/users/1/licenses/4Licensed under CC license Rome, March 5th 2011

Richardson maturity model 1. 0. mess hierarchic resource identification 2. HTTP verbs to perform operations HATEOASLicensed under CC license Rome, March 5th 2011

2Licensed under CC license Rome, March 5th 2011

Richardson maturity model 1. 0. mess hierarchic resource identification 2. HTTP verbs to perform operations 3. HATEOASLicensed under CC license Rome, March 5th 2011

3. GOD http://www.slideshare.net/trilancer/why-hateoas-1547275Licensed under CC license Rome, March 5th 2011

HyperlinksLicensed under CC license Rome, March 5th 2011

Hypermedia formats http://amundsen.com/hypermedia/Licensed under CC license Rome, March 5th 2011

Single entry pointLicensed under CC license Rome, March 5th 2011

Uniform interface is interesting. Everyone seem to have its own RESTful "service". But no one seem to entirely implement a uniform interface.Licensed under CC license Rome, March 5th 2011

Uniform interface is interesting. Everyone seem to have its own RESTful "service". But no one seem to entirely implement a uniform interface. That means... ...?Licensed under CC license Rome, March 5th 2011

No RESTful stuffLicensed under CC license Rome, March 5th 2011

But dont be too religious.Licensed under CC license Rome, March 5th 2011

But dont be too religious.Cookies stuff included.REST gets raped everyday,get over it.Licensed under CC license Rome, March 5th 2011

CounterorderLicensed under CC license Rome, March 5th 2011

Lets be religious bout that!Licensed under CC license Rome, March 5th 2011

Just for a couple minutes :)Licensed under CC license Rome, March 5th 2011

API #failLicensed under CC license Rome, March 5th 2011

Licensed under CC license Rome, March 5th 2011

flickr.com/people/{user-id}Licensed under CC license Rome, March 5th 2011

flickr.com/photos/{user-id}Licensed under CC license Rome, March 5th 2011

flickr.com/photos/{user-id} flickr.com/users/{user-id}/photos/Licensed under CC license Rome, March 5th 2011

flickr.photos.deleteLicensed under CC license Rome, March 5th 2011

wow, a delete!Licensed under CC license Rome, March 5th 2011

POSTLicensed under CC license Rome, March 5th 2011

Is that even legal?Licensed under CC license Rome, March 5th 2011

GET /api.twitter.com/1/users/show.formatLicensed under CC license Rome, March 5th 2011

GET /api.twitter.com/1/users/show.format GET /api.twitter.com/1/users/ HTTP Accept header: http://www.w3.org/Protocols/rfc2616/rfc2616-sec14.htmlLicensed under CC license Rome, March 5th 2011

GET /api.twitter.com/1/users/search.format?query...Licensed under CC license Rome, March 5th 2011

GET /api.twitter.com/1/users/search.format?query... GET /api.twitter.com/1/users?name=jackLicensed under CC license Rome, March 5th 2011

Only JSON responsesLicensed under CC license Rome, March 5th 2011

JSON is evilLicensed under CC license Rome, March 5th 2011

{ "date": "2011-01-01", "stock": "100", "price": "12" }Licensed under CC license Rome, March 5th 2011

The business evolvesLicensed under CC license Rome, March 5th 2011

{ "date": "2011-01-01", "stock": "100", "price": [ {"currency": "EUR", "amount": "12"}, {"currency": "USD", "amount": "10"} ] } Credits: http://twitter.com/#!/odracciLicensed under CC license Rome, March 5th 2011

Yeah, client is brokenLicensed under CC license Rome, March 5th 2011

No goodLicensed under CC license Rome, March 5th 2011

BTW <xml...> <product...> <price currency="EUR">25</price> <price currency="USD">23</price> </product> </xml>Licensed under CC license Rome, March 5th 2011

Well, getting back to...Licensed under CC license Rome, March 5th 2011

Create a new classhttp://<server>:[<port>]/class/<database>/<class-name>Licensed under CC license Rome, March 5th 2011

Response?Licensed under CC license Rome, March 5th 2011

HTTP/1.1 201 Created Cache-Control: no-cache, no-store, max-age=0, must-revalidate Pragma: no-cache Date: Fri Feb 18 03:21:09 CET 2011 Content-Type: text/plain Server: OrientDB Server v.0.9.24 Connection: Keep-Alive Set-Cookie: OSESSIONID=OS12979956697985725150466358620636; Path=/; HttpOnly CONTENT-LENGTH: 221Licensed under CC license Rome, March 5th 2011

CAN I HAZ HATEOAZ?Licensed under CC license Rome, March 5th 2011

HTTP 201 Created Location /bla bla bla bla... http://en.wikipedia.org/wiki/HTTP_locationLicensed under CC license Rome, March 5th 2011

I am really ashamed of having bothered you for 78 slides to say how to perform a GETLicensed under CC license Rome, March 5th 2011

ESI in peace Rome, March 5th 2011Licensed under CC license Rome, March 5th 2011

Edge Side Includes A de facto standard for bla bla bla...Licensed under CC license Rome, March 5th 2011

Edge Side Includes A de facto standard for bla bla bla... Server side includes ( not SSI! ) usually handled by the architectures ESI processor. http://www.w3.org/TR/esi-lang http://www.w3.org/TR/edge-archLicensed under CC license Rome, March 5th 2011

Include <esi:include src="http://codemotion.it/talks/1" />Licensed under CC license Rome, March 5th 2011

Try/Catch<esi:try> <esi:attempt> <esi:comment text="The REST talk"/> <esi:include src="http://codemotion.it/talks/1" /> </esi:attempt>Licensed under CC license Rome, March 5th 2011

Fallback<esi:try> <esi:attempt> <esi:comment text="The REST talk"/> <esi:include src="http://codemotion.it/talks/1" /> </esi:attempt> <esi:except> <esi:comment text="fallback"/> <p>epic fail</p> </esi:except></esi:try> Licensed under CC license Rome, March 5th 2011

PitfallsLicensed under CC license Rome, March 5th 2011

Pitfalls Processor configurationLicensed under CC license Rome, March 5th 2011

Pitfalls Processor configuration Implementation of fallbacks for handling errorsLicensed under CC license Rome, March 5th 2011

Pitfalls Processor configuration Implementation of fallbacks for handling errors it relies on the processor, which gains importance, for creating any single response ( not really true :-) )Licensed under CC license Rome, March 5th 2011

ProsLicensed under CC license Rome, March 5th 2011

ProsLicensed under CC license Performances Rome, March 5th 2011

ProsEffective gateway cacheLicensed under CC license Rome, March 5th 2011

Pros ScalabilityLicensed under CC license Rome, March 5th 2011

Which leads us to...Licensed under CC license Rome, March 5th 2011

REST+ESI in peace Rome, March 5th 2011Licensed under CC license Rome, March 5th 2011

This is a responseLicensed under CC license Rome, March 5th 2011

aggregating many resourcesLicensed under CC license Rome, March 5th 2011

So heres a resource.Licensed under CC license Rome, March 5th 2011

So heres a resource. Or, better, its representation.Licensed under CC license Rome, March 5th 2011

Five minutes cache 2 days cacheLicensed under CC license Rome, March 5th 2011

Lets write our own caching systemLicensed under CC license Rome, March 5th 2011

because we need to cache differentresources with different expiring intervals odino@odino-phenom:~$ ab -n 1000 -c 10 http://127. 0.0.1/tmp/esi.php This is ApacheBench, Version 2.3 <$Revision: 655654 $> Copyright 1996 Adam Twiss, Zeus Technology Ltd, http://www.zeustech.net/ Licensed to The Apache Software Foundation, http: //www.apache.org/ Benchmarking 127.0.0.1 (be patient) Completed 100 requests Completed 200 requests Completed 300 requests Completed 400 requestsLicensed under CC license Rome, March 5th 2011

Hell no!Licensed under CC license Rome, March 5th 2011

USE ESI and HTTP cacheLicensed under CC license Rome, March 5th 2011

Understanding the web cache http://www.mnot.net/cache_docs/#WORK HTTP cache http://www.w3.org/Protocols/rfc2616/rfc2616-sec13.htmlLicensed under CC license Rome, March 5th 2011

Without a single LoCLicensed under CC license Rome, March 5th 2011

ehm...Licensed under CC license Rome, March 5th 2011

With a few LoCs, gotta admitLicensed under CC license Rome, March 5th 2011

The ArchitectureLicensed under CC license Rome, March 5th 2011

Client Reverse proxy / ESI processor Application DatabaseLicensed under CC license Rome, March 5th 2011

No problems, uh?Licensed under CC license Rome, March 5th 2011

HellLicensed under CC license no! Rome, March 5th 2011

1. ComplexityLicensed under CC license Rome, March 5th 2011

1. ComplexityResolved by your needsLicensed under CC license Rome, March 5th 2011

2. CachingLicensed under CC license Rome, March 5th 2011

2. Caching Resolved by the gateway cache aka your reverse proxy aka, most of the time, VarnishLicensed under CC license Rome, March 5th 2011

You know Varnish, dont you?Licensed under CC license Rome, March 5th 2011

Without varnish Concurrency Level: 10 Time taken for tests: 1.467 seconds Complete requests: 1000 Failed requests: 0 Write errors: 0 Total transferred: 5476471 bytes HTML transferred: 5285280 bytes Requests per second: 681.69 [#/sec] (mean) Time per request: 14.670 [ms] (mean) Time per request: 1.467 [ms] (mean, across all concurrent requests) Transfer rate: 3645.73 [Kbytes/sec] receivedLicensed under CC license Rome, March 5th 2011

With varnish Concurrency Level: 10 Time taken for tests: 0.179 seconds Complete requests: 1000 Failed requests: 0 Write errors: 0 Total transferred: 5479938 bytes HTML transferred: 5288556 bytes Requests per second: 5587.65 [#/sec] (mean) Time per request: 1.790 [ms] (mean) Time per request: 0.179 [ms] (mean, across all concurrent requests) Transfer rate: 29902.34 [Kbytes/sec] receivedLicensed under CC license Rome, March 5th 2011

AWESOME huh?Licensed under CC license Rome, March 5th 2011

NO.Licensed under CC license Rome, March 5th 2011

Wheres my HATEOAS, again?Licensed under CC license Rome, March 5th 2011

Defining a request header in ESI <esi:environment> <esi:request_header name="Accept" value="text/vnd.odino.xhtml"/> </esi:environment>Licensed under CC license Rome, March 5th 2011

Defining a request header in ESI <esi:environment> <esi:request_header name="Accept" value="text/vnd.odino.xhtml"/> </esi:environment> Content NegotiationLicensed under CC license Rome, March 5th 2011

Awful supportLicensed under CC license Rome, March 5th 2011

Client Reverse proxy ? ApplicationLicensed under CC license Rome, March 5th 2011

Client Reverse proxy ESI processor ApplicationLicensed under CC license Rome, March 5th 2011

Some freaking crazy people built a webserverLicensed under CC license Rome, March 5th 2011

in PHPLicensed under CC license Rome, March 5th 2011

with the RAD framework Symfony2 http://symfony-reloaded.org/ https://github.com/pminnieur/ServerBundleLicensed under CC license Rome, March 5th 2011

That means you should be able to write your own reverse proxy acting as an ESI processor. I mean, if they were able to write a webserver...Licensed under CC license Rome, March 5th 2011

in PHPLicensed under CC license Rome, March 5th 2011

you have no excusesLicensed under CC license Rome, March 5th 2011

But pleaseLicensed under CC license Rome, March 5th 2011

Make it support all the ESI stuffLicensed under CC license Rome, March 5th 2011

Not like Varnish http://www.varnish-cache.org/trac/wiki/ESIfeaturesLicensed under CC license Rome, March 5th 2011

Extended content negotiationLicensed under CC license Rome, March 5th 2011

text/vnd.xhtml+xml;profile=esi Chapter 8: http://www.rfc-editor.org/rfc/rfc3236.txtLicensed under CC license Rome, March 5th 2011

Response to the proc text/vnd.xhtml+xml;profile=esi <head> .... </head> <body> <esi ... /> </body>Licensed under CC license Rome, March 5th 2011

Profile is used because the browser wont render such this kind of formats:Licensed under CC license Rome, March 5th 2011

text/vnd.xhesiml+xmlLicensed under CC license Rome, March 5th 2011

Response for fragments text/vnd.xhesiml+xml <div> .... </div> <span> <esi ... /> </span>Licensed under CC license Rome, March 5th 2011

Client Reverse proxy Supporting all the ESI ESI processor specification http://www.w3.org/TR/esi-lang ApplicationLicensed under CC license Rome, March 5th 2011

Overhead?Licensed under CC license Rome, March 5th 2011

Is that a problem?Licensed under CC license Rome, March 5th 2011

Client Reverse proxy Supporting all the ESI ESI processor specification http://www.w3.org/TR/esi-lang ApplicationLicensed under CC license Rome, March 5th 2011

Varnish is there for a reasonLicensed under CC license Rome, March 5th 2011

Because at thatLicensed under CC license Rome, March 5th 2011

Varnish ROCKS!Licensed under CC license Rome, March 5th 2011

Ready to include a resource with our custom hypermedia format <esi:environment> <esi:request_header name="Accept" value="text/vnd.blablabla"/> </esi:environment>Licensed under CC license Rome, March 5th 2011

But dont screw everything forgetting the remaining parts of HATEOAS, like hypermedia relations. http://www.slideshare.net/adorepump/hateoas-the-confusing-bit-from-rest http://tech.groups.yahoo.com/group/rest-discuss/message/17011Licensed under CC license Rome, March 5th 2011

So, with aLicensed under CC license Rome, March 5th 2011

LayeredLicensed under CC license Rome, March 5th 2011

CacheableLicensed under CC license Rome, March 5th 2011

StatelessLicensed under CC license Rome, March 5th 2011

Driven byLicensed under CC license Rome, March 5th 2011

Uniform interfaceLicensed under CC license Rome, March 5th 2011

and hypermediaLicensed under CC license Rome, March 5th 2011

architectureLicensed under CC license Rome, March 5th 2011

OhLicensed under CC license dear Rome, March 5th 2011

Richardson maturity model level 3Licensed under CC license Rome, March 5th 2011

Again...Licensed under CC license Rome, March 5th 2011

ProsLicensed under CC license Performances Rome, March 5th 2011

Pros ScalabilityLicensed under CC license Rome, March 5th 2011

Pros DurabilityLicensed under CC license Rome, March 5th 2011

Where to REST in peace Rome, March 5th 2011Licensed under CC license Rome, March 5th 2011

any webserviceLicensed under CC license Rome, March 5th 2011

machine to machineLicensed under CC license Rome, March 5th 2011

Be the next AtomPub http://bitworking.org/projects/atom/rfc5023.htmlLicensed under CC license Rome, March 5th 2011

Actually...Licensed under CC license Rome, March 5th 2011

"REST is software design on the scale of decades: every detail is intended to promote software longevity and independent evolution. Many of the constraints are directly opposed to short-term efficiency. Unfortunately, people are fairly good at short-term design, and usually awful at long-term design. " Roy FieldingLicensed under CC license Rome, March 5th 2011

Put a bit of REST everywhereLicensed under CC license Rome, March 5th 2011

http://articles.sfgate.com/2011-02-20/opinion/28613184_1_news-network-cable-and-satellite-website http://tech.groups.yahoo.com/group/rest-discuss/message/17370 +2.500% trafficLicensed under CC license Rome, March 5th 2011

Rules of good designLicensed under CC license Rome, March 5th 2011

No need to be religiousLicensed under CC license Rome, March 5th 2011

This talk sucks in peace Rome, March 5th 2011Licensed under CC license Rome, March 5th 2011

Agile development vs RESTLicensed under CC license Rome, March 5th 2011

Agile development vs REST mmmmmmmmmmmm................ http://www.odino.org/288/restful-and-agile-love-hate-loveLicensed under CC license Rome, March 5th 2011

Browsers suckLicensed under CC license Rome, March 5th 2011

HTTP authentication http://www.odino.org/238/mockups-of-web-authentication-the-rest-rescueLicensed under CC license Rome, March 5th 2011

HTML5Licensed under CC license Rome, March 5th 2011

Everybody loves itLicensed under CC license Rome, March 5th 2011

I HATE HTML5Licensed under CC license Rome, March 5th 2011

Original specification: "support for PUT and DELETE verbs"Licensed under CC license Rome, March 5th 2011

People went insaneLicensed under CC license Rome, March 5th 2011

Current status?Licensed under CC license Rome, March 5th 2011

RemovedLicensed under CC license Rome, March 5th 2011

There are no use casesLicensed under CC license Rome, March 5th 2011

They saidLicensed under CC license Rome, March 5th 2011

http://www.w3.org/TR/2010/WD-html5-diff-20101019/#changes-2010-06-24Licensed under CC license Rome, March 5th 2011

Then people got madLicensed under CC license Rome, March 5th 2011

A disclaimer in peace Rome, March 5th 2011Licensed under CC license Rome, March 5th 2011

JSON does not suck. At all. http://www.slideshare.net/Wombert/xml-versus-the-new-kids-on-the-block-phpbnl11-20110129Licensed under CC license Rome, March 5th 2011

Varnish does not suck. At all.Licensed under CC license Rome, March 5th 2011

HTML5 does not suck. At all. http://www.html5rocks.com/Licensed under CC license Rome, March 5th 2011

OrientDB rocks Ask Luca Garulli, he might be in this room http://www.orientechnologies.com/Licensed under CC license Rome, March 5th 2011

Everything is a tradeoffLicensed under CC license Rome, March 5th 2011

Hints?Licensed under CC license Rome, March 5th 2011

David Zuelke knows bestLicensed under CC license Rome, March 5th 2011

Design HTTP interfaces and RESTful webserviceshttp://www.slideshare.net/Wombert/designing-http-interfaces-and-restful-web-services-phpbnl11-20110128Licensed under CC license Rome, March 5th 2011

Others know bestLicensed under CC license Rome, March 5th 2011

300 RESTful boring slides :) http://www.slideshare.net/guilhermecaelum/rest-in-practice REST as the DBMS of the web http://www.slideshare.net/dnene/rest-representational-state-transfer-explainedLicensed under CC license Rome, March 5th 2011

amazon.itLicensed under CC license Rome, March 5th 2011

Thanks! Alessandro Nadalin odino.org

@_odino_ #codemotionLicensed under CC license Rome, March 5th 2011

12 - 14 May, Verona

Credits http://www.flickr.com/photos/larachris/16564077/sizes/o/in/photostream/ http://www.flickr.com/photos/ashatenbroeke/4367373081/sizes/z/in/photostream/ http://www.flickr.com/photos/yourdon/3140270189/sizes/l/in/photostream/ http://www.flickr.com/photos/jox1989/4964706072/sizes/l/in/photostream/ http://www.flickr.com/photos/brainfg/168506259/sizes/o/in/photostream/ http://www.flickr.com/photos/norte_it/3897091546/sizes/o/in/photostream/ http://www.zdnet.com/blog/service-oriented/soap-versus-rest-a-matter-of-style/3568http://www.flickr.com/photos/turtlemom_nancy/2046347762/sizes/l/in/photostream/ http://www.flickr.com/photos/juanpg/3333385784/sizes/z/in/photostream/ http://www.flickr.com/photos/congvo/301678287/sizes/l/in/photostream/ http://www.flickr.com/photos/ihasb33r/2573196546/sizes/z/in/photostream/ http://www.flickr.com/photos/martin_heigan/4544138976/sizes/o/in/photostream/ http://www.flickr.com/photos/cknara/4195099999/sizes/o/in/photostream/ http://www.flickr.com/photos/1080p/3076529265/sizes/l/in/photostream/ http://www.flickr.com/photos/adamrice/280300202/sizes/l/in/photostream/ http://www.flickr.com/photos/tomer_a/541411897/sizes/o/in/photostream/ http://www.flickr.com/photos/subpra/4514008262/sizes/l/in/photostream/ http://www.flickr.com/photos/lippincott/2539720043/sizes/l/in/photostream/ http://www.flickr.com/photos/rawryder/5086090931/sizes/l/in/photostream/ http://www.flickr.com/photos/robboudon/5312731161/sizes/l/in/photostream/ http://www.flickr.com/photos/bc-burnslibrary/4158243488/sizes/o/in/photostream/http://www.flickr.com/photos/13606325@N08/2416993706/sizes/o/in/photostream/ http://www.flickr.com/photos/neothezion/5135841069/sizes/l/in/photostream/ http://www.flickr.com/photos/planetschwa/2494067809/ http://www.flickr.com/photos/thomasthomas/258931782/

REST in peace @ Codemotion 2011

by Alessandro Nadalin on Mar 05, 2011

Accessibility

Categories

Tags

Upload Details

Usage Rights

7 Embeds 278

Statistics

REST in peace @ Codemotion 2011 — Presentation Transcript

http://www.codemotion.it	117
http://www.odino.org	56
http://2011.codemotion.it	43
http://www.digitallycultured.it	28
http://odino.org	15
http://127.0.0.1:4000	13
http://codemotion.it	6