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Duncan Cragg on Declarative Architectures
About All Things...
...taking programming beyond:
Threads, Message Queues, Client-Server, CORBA, Web Services, SOAs, Agents, Synchronous Architectures, Imperative Programming - and even Applications, Desktops and Documents
Duncan Cragg...
...works for ThoughtWorks UK; originally from April 2002 to July 2007 and now recently re-joined. Previously worked as a Web Architect for the Financial Times.
...went to both UCL and Imperial College of the University of London (in the Eighties); specialising in Logic during his MSc.
...wonders when his LinkedIn Account will be useful
...has a phone-cam, and used it on himself once, just before his weekly shave:
Photo of Duncan Cragg
...can be contacted by and followed on Twitter.
Posts tagged 'microformats' Atom Feed for Posts tagged 'microformats'
 
 
The Basics | The Object Network
January 20, 2012 18:07
Updated: January 23, 2012 19:45

Right, let's get started with some basic conventions in the Object Network!

This part in the Object Network series will cover URLs, HTTP headers and some common JSON patterns.

Updated 23/1/12: I changed the URLs in the example to have one of each type.   ...

 
Why we should link up our Web APIs | The Object Network
January 19, 2012 20:58
Updated: January 22, 2012 16:05

OK, I'm trying to take a Big Idea and make it as Simple As Possible to grasp.

If we link our JSON data together and use the same formats, then our mobile, browser and server apps can become much simpler - through clean, stable, common, shared, re-used code - and much more powerful - through clean, stable, common, shared, linked, cached data.

This is the second part in the Object Network series, which will guide you away from building isolated Web APIs to engaging in a linked-up data landscape.   ...

 
Introduction | The Object Network
November 29, 2011 23:11
Updated: January 22, 2012 16:03

It's interesting to compare the current growth of Web APIs with the early growth of the Web itself. To save you jumping those links: the Web dramatically beats the APIs.

I believe that the most likely cause of such relatively slow growth (in what should be a booming ecosystem) is that each API forms a closed silo and cannot benefit from any network effects. Every API is different and there are no links between them. There usually aren't any links within a silo. You can't even use a given API without first consulting the documentation.

The Object Network is designed to fix this, with linked-up JSON in common formats. This will allow easier mashing, sharing and cacheing of data and allow client code to be shared and reused.   ...

 
OTS: The Benefits of both Native and Web Mobile
May 10, 2011 11:11

The Web, in its purest form - declarative HTML and CSS documents, XML feeds - is mashable, linkable, sharable. It's easy to create documents that slot into the global Web and can be accessed on any device; accessed by just a simple link. Servers can easily scale through statelessness and cacheing.

Native Mobile Apps are fast and slick. They are intimate with the dynamic, interactive, tactile mobile user interface, intimate with the capabilities of the device and intimate with the domain of mobile: photos, locations, contacts, messages.

OTS is a simple, clean, powerful approach to delivering Mobile functionality and content that is designed to realise these benefits of both Native Apps and the Web.   ...

 
Deriving FOREST
November 25, 2009 21:29

Say we want to integrate multiple applications which handle order processing. OK, that's got to be one of the dullest starts to a blog post. Never mind, bear with me...

So, we have applications on separate servers for handling and driving data such as orders, product descriptions and catalogues, stock lists, price lists, tracking, packing notes and delivery notes, invoices, payments, etc.

We may choose an SOA approach, of course. But let's say our sponsors have heard of this cheaper alternative: REST! Which to them means 'using Web technology to save money'.

Now .. suppose we push the time slider right back to before Mark Baker and the SOA -vs- REST Wars - or the 'SOAP -vs- REST Wars' as people naively called it. To when REST was simply (!) a description of the Web's architectural style...

What if we revisit the applicability of the Web, and its abstraction into REST, to the architecture of machine-to-machine distributed systems - to something like our order processing integration?

I think we'd quickly arrive at something that looks more like FOREST than, say, AtomPub...   ...

 
Web Objects Ask, They Never Tell | The REST Dialogues
August 13, 2009 11:43

In an exclusive nine-part dialogue with an imaginary eBay Architect, we present an accessible discussion of the REST vs. SOA issue.

Although eBay have what they call a 'REST' interface, it is, in fact, a STREST interface, and only works for a few of the many function calls that they make available via SOAP.

In this dialogue series, I argue the case for eBay to adopt a truly REST approach to their integration API.

Part 9: Web Objects Ask, They Never Tell   ...

 
Content-Types and URIs | The REST Dialogues
February 16, 2008 23:44

In an exclusive nine-part dialogue with an imaginary eBay Architect, we present an accessible discussion of the REST vs. SOA issue.

Although eBay have what they call a 'REST' interface, it is, in fact, a STREST interface, and only works for a few of the many function calls that they make available via SOAP (GetSearchResults, GetItem, GetCategoryListings, etc).

In this dialogue series, I argue the case for eBay to adopt a truly REST approach to their integration API.

Part 6: Content-Types and URIs   ...

 
Google Micro Conference
October 5, 2007 11:22

Last night's Google London Open Source Jam (also here) was on the subject of the 'Web' (didn't they invent that? Oh no, that was Microsoft).

This event has been getting better and better each time I've attended. There were some very interesting lightning talks held together with a tight structure and plenty of chance to chat, drink cold Leffe and eat cold pizza. And nick [transatlantic translation: 'steal'] the Green & Black's chocolate.

An ideal Micro Conference...   ...

 
How Ruby can enable the Web 2.0 Platform
June 26, 2007 15:17

Web 2.0's definition includes seeing the Web as an application platform. Which means it is in competition with Java and .Net, and with SOA, for both local and widely distributed applications.

If the Web is going to be a platform, the skills you need to learn to program it are the core Web 2.0 technologies such as Ajax, JSON, Atom, Microformats and OpenID.

And Ruby. This language, that's capturing the hearts of many Web 2.0 programmers, is ideal for easing the transition from the Java and .Net platforms to the Web platform, as I will show.

Even if you're part of a big company that is generally immune to the latest trends, the marriage of Ruby and the Web-as-platform may be something to prepare for. It could even displace your SOA agenda...   ...

 
The Distributed Observer Pattern | The REST Dialogues
June 20, 2007 22:42

In an exclusive nine-part dialogue with an imaginary eBay Architect, we present an accessible discussion of the REST vs. SOA issue.

Although eBay have what they call a 'REST' interface, it is, in fact, a STREST interface, and only works for a few of the many function calls that they make available via SOAP (GetSearchResults, GetItem, GetCategoryListings, etc).

In this dialogue series, I argue the case for eBay to adopt a truly REST approach to their integration API.

Part 5: The Distributed Observer Pattern   ...

 
Lighter-than Wins in 2007
January 18, 2007 11:12

What do all the MAJOR Web 2.0 technologies of 2007 have in common?

Let me list them first:

    M.icroformats (including tags)
    A.jax (including Comet)
    J.SON (plus YAML)
    O.penID (plus SXIP, LID, Yadis)
    R.EST (including Atom, APP)

What these technologies have in common is that they're all lighter than their competitors:

Microformats

Lighter than the Semantic Web

Ajax

Lighter than Fat Client (!)

JSON

Lighter than XML

OpenID

Lighter than SAML/Liberty Alliance

REST

Lighter than SOA

  ...

 
Setting Data | The REST Dialogues
November 15, 2006 23:37

In an exclusive nine-part dialogue with an imaginary eBay Architect, we present an accessible discussion of the REST vs. SOA issue.

Although eBay have what they call a 'REST' interface, it is, in fact, a STREST interface, and only works for one of the many function calls that they make available via SOAP (GetSearchResults).

In this dialogue series, I argue the case for eBay to adopt a truly REST approach to their integration API.

Part 2: Setting Data   ...

 
Getting Data | The REST Dialogues
November 14, 2006 00:05

In an exclusive nine-part dialogue with an imaginary eBay Architect, we present an accessible discussion of the REST vs. SOA issue.

Although eBay have what they call a 'REST' interface, it is, in fact, a STREST interface, and only works for one of the many function calls that they make available via SOAP (GetSearchResults).

In this dialogue series, I argue the case for eBay to adopt a truly REST approach to their integration API.

Part 1: Getting Data   ...

 
The Right Way to do Ajax is Declaratively
July 13, 2006 14:33

Don't write your interactive Web application in custom Javascript! The Web's Declarative nature needn't be broken just because you want two-way dynamic data instead of one-way documents on your site.

Instead, write Declaratively to generic Javascripts, plugins and browser features such as Hijax, hInclude, XForms, SVG, XBL, etc.   ...

 
Microformats Challenge Web Feeds and Web APIs!
June 7, 2006 19:10

Microformats are subversive: they not only challenge the approach of full-blown Semantic Web approaches, but even question fundamental Web 2.0 building blocks such as Web Feeds and Web APIs.

I recently attended XTech 2006, where there were a few talks related to Microformats.

After summarising these talks, I'll finish with my shocking revelations about the subversive nature of Microformats!   ...

 
 
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