Upgrade to Pro
— share decks privately, control downloads, hide ads and more …
Speaker Deck
Features
Speaker Deck
PRO
Sign in
Sign up for free
Search
Search
REST - Valtech
Search
Mårten Gustafson
March 09, 2012
Programming
4
390
REST - Valtech
Presentation on REST given at Valtech Stockholm.
Approx 60 minutes.
Mårten Gustafson
March 09, 2012
Tweet
Share
More Decks by Mårten Gustafson
See All by Mårten Gustafson
Github all the things!
chids
3
350
Bastardised Kanban
chids
0
1.5k
Heroku as a production platform
chids
0
170
DevOps @ KnowIT
chids
0
170
Opinions on DevOps
chids
2
620
The OPS side of DEV
chids
9
4.6k
[Swedish] NoSQL at Javaforum Stockholm
chids
2
150
Approaching and evaluating NoSQL
chids
3
170
Automation @ Hitta.se and why it happened
chids
1
260
Other Decks in Programming
See All in Programming
git worktree × Claude Code × MCP ~生成AI時代の並列開発フロー~
hisuzuya
1
450
GitHub Copilot and GitHub Codespaces Hands-on
ymd65536
1
110
Claude Codeの使い方
ttnyt8701
1
130
Composerが「依存解決」のためにどんな工夫をしているか #phpcon
o0h
PRO
1
210
KotlinConf 2025 現地で感じたServer-Side Kotlin
n_takehata
1
230
エラーって何種類あるの?
kajitack
5
300
「ElixirでIoT!!」のこれまでとこれから
takasehideki
0
370
第9回 情シス転職ミートアップ 株式会社IVRy(アイブリー)の紹介
ivry_presentationmaterials
1
230
技術同人誌をMCP Serverにしてみた
74th
0
290
たった 1 枚の PHP ファイルで実装する MCP サーバ / MCP Server with Vanilla PHP
okashoi
1
170
今ならAmazon ECSのサービス間通信をどう選ぶか / Selection of ECS Interservice Communication 2025
tkikuc
18
3.3k
Bytecode Manipulation 으로 생산성 높이기
bigstark
2
370
Featured
See All Featured
BBQ
matthewcrist
89
9.7k
Automating Front-end Workflow
addyosmani
1370
200k
GitHub's CSS Performance
jonrohan
1031
460k
What's in a price? How to price your products and services
michaelherold
246
12k
RailsConf & Balkan Ruby 2019: The Past, Present, and Future of Rails at GitHub
eileencodes
138
34k
Visualizing Your Data: Incorporating Mongo into Loggly Infrastructure
mongodb
46
9.6k
How GitHub (no longer) Works
holman
314
140k
Site-Speed That Sticks
csswizardry
10
660
How To Stay Up To Date on Web Technology
chriscoyier
790
250k
A Tale of Four Properties
chriscoyier
160
23k
Practical Orchestrator
shlominoach
188
11k
The Pragmatic Product Professional
lauravandoore
35
6.7k
Transcript
Hi! My name is Mårten Gustafson
I used to work here...
...now I work here... (and I brought give-away readers)
Representational State Transfer
Representational State Transfer
REST
RESTful
HTTP
means of INTEGRATING disparate stuff
(my DARK and shameful PAST) * 4 years of: **
IBM WebSphere ** ESB ** SOAP/WSDL ** Enterprisey * REST vs SOAP vs HTTP vs JMS vs WMQ vs PUB/SUB vs EDA vs HA vs D/R
INTEGRATIONs
APIs
INTERFACEs
UNIFORM * REST defines a uniform interface * As opposed
to SOAP, CORBA, etc
GET PUT POST DELETE - list all foo - 501
- create a new foo - 501 a/b/c/foo
GET PUT POST DELETE - details of {id} - update
the {id} - 501 - delete the {id} a/b/c/foo/{id}
VERBs
(OPTIONS) * not common (yet) * mention: pre-flight
GET * retrieve
HEAD * retrieve without content (ie metadata)
POST * create (without known id) or update (with/without -
unsafe)
PUT * update or create with known id (idempotent)
DELETE * remove
(TRACE) * ?
(CONNECT) * ?
IDEMPOTENT * Without side effects * Fine to call multiple
times
safe idempotent unsafe OPTIONS X (x) GET X (x) HEAD
X (x) POST X PUT X X DELETE X X TRACE X (x) CONNECT
DEVELOPing
WELL BEHAVED * be well behaved * read up on
HTTP/1.1
ETag * The most overlooked HTTP header in API design?
Allows concurrency control * if-match: “<etag>” * if-none-match: “<etag>” * 304 not modified * version number
VARY * Tell clients/caches which headers that forms the response
(ie what’s the cache-combo) * ie: Vary: Accept ( /foo/bar vs /foo/bar : XML vs JSON)
CACHE-CONTROL * age * no-cache * no-store
EXPIRES * Expire any cached copies after...
BENEFITs
CLIENTS PROXIES SERVERS LOAD BALANCERS * will all understand and
act accordingly * in addition cool modern software does HTTP/REST out-of-the-box (CouchDB, Riak)
PLANNING
URLs * What will your URL scheme look like *
How will it evolve * Identify natural points of extension/evolution
DNS * This is part of your URL * Think
about partitioning (subdomains) * Think about future transition, separation, isolation * Does Wildcard DNS make sense to you?
SECURITY * HTTPS + basic auth (one stop shop) *
API auth (client certificates, OAuth) * SSL cookies
VERSIONING * This is the hard part
http://api.foo/v1/bar application/xml + easy (ie browser compatible)
http://api.foo/v1/bar application/xml - URL changes with version - Breaks the
URL = resource REST thingy
http://api.foo/bar application/vnd.bar-v1+xml - hard (ie NOT browser compatible)
http://api.foo/bar application/vnd.bar-v1+xml + version is independent of URL
application/vnd.foo-v1+xml application/vnd.foo-v2+xml * Vary: “Accept”
REPRESENTATION
http://api.foo/bar application/xml + easy (ie browser compatible)
http://api.foo/bar.xml + even easier (ie really browser compatible) - more
info in URL
http://api.foo/bar application/vnd.bar-v1+xml
http://api.foo/bar application/vnd.bar-v1+xml + representation is independent of URL
USABILITY
PROXIES
http://api.foo/v1/bar.xml
http://api.foo/v1/bar.xml
http://api.foo/v1/bar.xml http://api.foo/bar
http://api.foo/v1/bar.xml http://api.foo/bar application/vnd.bar-v1+xml
http://api.foo/v1/bar.xml http://api.foo/bar application/vnd.bar-v1+xml
http://api.foo/v1/bar.xml http://api.foo/bar application/vnd.bar-v1+xml
HATEOAS
WAT?!
LINKs * State transitions
MIMEs * Representations
LINK + MIME
CONTRACTS * What do we promise our clients? * Read
these: - http://martinfowler.com/bliki/TolerantReader.html - http://martinfowler.com/articles/consumerDrivenContracts.html
SERIALIZED FORM + Easy programming (initially, typed proxies) - Rigid
(will not bend, will break)
SCHEMAS * Good for automated testing * If you give
them away, assume people will generate proxies (and depend on serialized form) * Consider not providing any (or model them loose, xs:any etc - I’m not sure it’s a good idea)
GUARANTEES * Fields annotated with “#userid” will have the following
form * Attributes named “email” will conform standard X * This document contains one, and only one field annotated “#id”, which is the unique id for Y
ROBUSTNESS
<user> <id>1234</id> <name> <first>Mårten</first> <last>Gustafson</last> </name> </user> * XPath
<user> <id>1234</id> <name> <first>Mårten</first> <last>Gustafson</last> </name> </user> /user/name/last * Rigid
<user> <id>1234</id> <name> <first>Mårten</first> <last>Gustafson</last> </name> </user> //last * Adaptive
* Might return multiple
<user> <id>1234</id> <name> <first>Mårten</first> <last>Gustafson</last> </name> </user> //last[1] * Adaptive
* Only one
<user> <id>1234</id> <name> <first id=”#name.first”>Mårten</first> <last id=”#name.last”>Gustafson</last> </name> </user> *
Annotated
<user> <id>1234</id> <name> <first id=”#name.first”>Mårten</first> <last id=”#name.last”>Gustafson</last> </name> </user> //last[1]
* Still works
<user> <id>1234</id> <name> <first id=”#name.first”>Mårten</first> <last id=”#name.last”>Gustafson</last> </name> </user> //*[@id='#name.last'][1]
* Adaptive
<user> <id>1234</id> <first id=”#name.first”>Mårten</first> <last id=”#name.last”>Gustafson</last> </user> //*[@id='#name.last'][1] * Still
works
<named> <first id="#name.first">Mårten</first> <last id="#name.last">Gustafson</last> </named> //*[@id='#name.last'][1] * Still works
<yeah> <foo id="#name.first">Mårten</foo> <bar id="#name.last">Gustafson</bar> </yeah> //*[@id='#name.last'][1] * Still works
INFORMATION MODELLING * This is hard, usually “versioning hard”
#name.first * Format * Values * Guarantees
URL DNS MIME LINKS PROXY
URL DNS MIME LINKS =CONTRACT
?
@martengustafson
[email protected]
http://marten.gustafson.pp.se/talks * Representations