Slides from J and Beyond 2014 presentation on asynchronous message queues in Joomla.
Asynchronous message queues are an important component of many distributed computing environments. This presentation will show how queues can be used to help deliver scalable and robust web applications.
A lightweight library for message queuing in Joomla will be presented and some possible applications in areas such as search indexing and image processing will be explored.
Chris is a Joomla developer with a fondness for the British national sport of queuing. He's also a member of the Joomla Production Leadership Team.
The document discusses how to style Joomla menus with CSS. It covers choosing a template, the different types of menus, basic HTML and CSS for menus, styling menu items, adding hover and active states, using background images, and integrating Joomla menu classes. The goal is to provide a recipe for styling vertical or horizontal menus and applying the correct CSS order while taking advantage of Joomla menu features.
Space Situational Awareness Forum
Following another very successful conference in London in November 2014, Space Situational Awareness 2015 took place in Hyattsville, Maryland in May 2015, with over 60 SSA experts from all over the globe coming together to discuss the most pressing SSA challenges.
With increasing dependence on space-based services, the ability to protect space infrastructure has become essential to our society. Any shutdown of even a part of space infrastructures could have significant consequences for the well-functioning of economic activities and our citizens’ safety, and would impair the provision of emergency services.
However, space infrastructures are increasingly threatened by the risk of collision between spacecraft and more importantly, between spacecraft and space debris. As a matter of fact, space debris has become the most serious threat to the sustainability of certain space activities.
In order to mitigate the risk of collision it is necessary to identify and monitor satellites and space debris, catalogue their positions, and track their movements (trajectory) when a potential risk of collision has been identified, so that satellite operators can be alerted to move their satellites. This activity is known as space surveillance and tracking (SST), and is today mostly based on ground-based sensors such as telescopes and radars.
With a focus on solving the political issues but not ignoring the technical, Space Situational Awareness 2015 the leading gathering of dedicated SSA experts from the USA, Europe and beyond, to discuss and debate the business, political and technical challenges that lie ahead.
Take a look at our previous Space Situation Awareness event…
Who should attend Space Situational Awareness?
Space Situational Awareness 2015 is a community of experts from Government, Space Agencies, Satellite/Spacecraft Operators, Space Lawyers, Space Insurance providers and Defense who are looking to understand and predict the physical location of natural and manmade objects in orbit around the Earth, with the objective of avoiding collisions.
How can you get involved in Space Situational Awareness?
If you feel that you could add to the debate and discussion at Space Situational Awareness, we’d be delighted to hear from you. Please drop us a line on +44(0)7769157787 or email me at adam.plom@coriniumintelligence.com.
This document summarizes Chris Davenport's presentation on the future of Joomla. It outlines the roadmap for Joomla 3.x releases, including goals for Joomla 3.6 like adding a hypermedia API, service layer, and new router. It also discusses plans for Joomla 4, including splitting it from Joomla 3 to focus on stability for 3.x and innovation for 4.x, with an emphasis on a service layer and hypermedia API to improve integration.
Joomla 3.4 Made Easy - A perfect start for Joomla! novices. Updated with the latest Joomla version. Click here to download: http://www.joomlashine.com/download/free-download-joomla-made-easy.html
For more information from JoomlaShine, just:
- Visit our website at: www.joomlashine.com
- Like our fan pages on FB: http://www.facebook.com/joomlashine
- Follow us on Twitter: http://twitter.com/joomlashine
Infographic 6 steps to build a Joomla websiteJoomlaShine
Want to build a Joomla! website on your own, but too afraid of tons of codes that you merely know of? Worry not! With JSN PowerAdmin and JSN Page Builder from JoomlaShine, everything has become easier than ever! All you have to do is typing your pure text, and click to select an appropriate method of display on your front page. No coding skills needed.
Let's check out the 6 simple steps you have to build your own eye-catching Joomla site with the help of JSN PowerAdmin and JSN PageBuilder!
Download JSN PageBuilder: http://www.joomlashine.com/joomla-extensions/jsn-pagebuilder-joomla-page-builder-extension.html
Joomla 3.6 - The revolution in Joomla User ExperienceJoomlaShine
Joomla 3.6 is here with more than 400 improvements to make it faster, easier to use and more powerful. Check out the changes in Joomla 3.6 that make you fall in love with Joomla over again!
Slides from J and Beyond 2013 presentation.
You have probably heard of REST and Web Services. In this presentation you will learn what they are and why they are important to the future of Joomla. You will learn why it is important for the API to be HAPI, what the HATEOAS constraint is and why developers should always keep it in mind when writing clients and servers on the new API, and why moving to a services-first design philosophy is important for everyone involved in Joomla software development.
The document discusses how to style Joomla menus with CSS. It covers choosing a template, the different types of menus, basic HTML and CSS for menus, styling menu items, adding hover and active states, using background images, and integrating Joomla menu classes. The goal is to provide a recipe for styling vertical or horizontal menus and applying the correct CSS order while taking advantage of Joomla menu features.
Space Situational Awareness Forum
Following another very successful conference in London in November 2014, Space Situational Awareness 2015 took place in Hyattsville, Maryland in May 2015, with over 60 SSA experts from all over the globe coming together to discuss the most pressing SSA challenges.
With increasing dependence on space-based services, the ability to protect space infrastructure has become essential to our society. Any shutdown of even a part of space infrastructures could have significant consequences for the well-functioning of economic activities and our citizens’ safety, and would impair the provision of emergency services.
However, space infrastructures are increasingly threatened by the risk of collision between spacecraft and more importantly, between spacecraft and space debris. As a matter of fact, space debris has become the most serious threat to the sustainability of certain space activities.
In order to mitigate the risk of collision it is necessary to identify and monitor satellites and space debris, catalogue their positions, and track their movements (trajectory) when a potential risk of collision has been identified, so that satellite operators can be alerted to move their satellites. This activity is known as space surveillance and tracking (SST), and is today mostly based on ground-based sensors such as telescopes and radars.
With a focus on solving the political issues but not ignoring the technical, Space Situational Awareness 2015 the leading gathering of dedicated SSA experts from the USA, Europe and beyond, to discuss and debate the business, political and technical challenges that lie ahead.
Take a look at our previous Space Situation Awareness event…
Who should attend Space Situational Awareness?
Space Situational Awareness 2015 is a community of experts from Government, Space Agencies, Satellite/Spacecraft Operators, Space Lawyers, Space Insurance providers and Defense who are looking to understand and predict the physical location of natural and manmade objects in orbit around the Earth, with the objective of avoiding collisions.
How can you get involved in Space Situational Awareness?
If you feel that you could add to the debate and discussion at Space Situational Awareness, we’d be delighted to hear from you. Please drop us a line on +44(0)7769157787 or email me at adam.plom@coriniumintelligence.com.
This document summarizes Chris Davenport's presentation on the future of Joomla. It outlines the roadmap for Joomla 3.x releases, including goals for Joomla 3.6 like adding a hypermedia API, service layer, and new router. It also discusses plans for Joomla 4, including splitting it from Joomla 3 to focus on stability for 3.x and innovation for 4.x, with an emphasis on a service layer and hypermedia API to improve integration.
Joomla 3.4 Made Easy - A perfect start for Joomla! novices. Updated with the latest Joomla version. Click here to download: http://www.joomlashine.com/download/free-download-joomla-made-easy.html
For more information from JoomlaShine, just:
- Visit our website at: www.joomlashine.com
- Like our fan pages on FB: http://www.facebook.com/joomlashine
- Follow us on Twitter: http://twitter.com/joomlashine
Infographic 6 steps to build a Joomla websiteJoomlaShine
Want to build a Joomla! website on your own, but too afraid of tons of codes that you merely know of? Worry not! With JSN PowerAdmin and JSN Page Builder from JoomlaShine, everything has become easier than ever! All you have to do is typing your pure text, and click to select an appropriate method of display on your front page. No coding skills needed.
Let's check out the 6 simple steps you have to build your own eye-catching Joomla site with the help of JSN PowerAdmin and JSN PageBuilder!
Download JSN PageBuilder: http://www.joomlashine.com/joomla-extensions/jsn-pagebuilder-joomla-page-builder-extension.html
Joomla 3.6 - The revolution in Joomla User ExperienceJoomlaShine
Joomla 3.6 is here with more than 400 improvements to make it faster, easier to use and more powerful. Check out the changes in Joomla 3.6 that make you fall in love with Joomla over again!
Slides from J and Beyond 2013 presentation.
You have probably heard of REST and Web Services. In this presentation you will learn what they are and why they are important to the future of Joomla. You will learn why it is important for the API to be HAPI, what the HATEOAS constraint is and why developers should always keep it in mind when writing clients and servers on the new API, and why moving to a services-first design philosophy is important for everyone involved in Joomla software development.
This document discusses the Smart Search feature in Joomla. It provides an overview of how Smart Search improved upon the original Joomla search by adding features like auto-completion, faceted search, relevancy ordering, and more. It then discusses how Smart Search works under the hood, including how it indexes content, stems terms, classifies content with taxonomies, and handles queries. Finally, it outlines future directions for Smart Search, such as improved language support, preserving filters, and developing a search API.
The document summarizes discussions from a Joomla Production Leadership Team summit and JoomlaDay USA West 2010 conference. Key points include:
- The PLT discussed moving to more frequent releases every 6 months, splitting the Joomla platform from the CMS, and establishing an open development process for new features.
- Major companies like eBay and Microsoft are adopting Joomla for internal use and contributing code back to the project. eBay uses Joomla for an internal analytics portal.
- A new Joomla Press imprint was announced for publishing books about Joomla through one of the world's largest publishers, Pearson.
This document discusses optimizing Joomla templates for high performance. It recommends tools like Firebug and YSlow to measure performance, and optimizing assets like JavaScript, CSS, and images. JavaScript should be moved to the end of the page, unused code removed, and files minified and compressed. CSS should be moved to the head and stripped of unused rules. Images can be optimized by using sprites, compression, and delivery via a CDN. The optimization process involves these techniques applied at each stage of development.
Joomla Day UK 2009 Template Design PresentationChris Davenport
The document discusses best practices for designing Joomla templates, including:
1. Using reset stylesheets and CSS frameworks to provide a consistent base.
2. Understanding the two-phase template execution process of PHP code execution followed by module inclusion.
3. Accessing the template parameters, document properties, and Joomla API classes to customize the template.
The document provides instructions for modifying Joomla templates, including how to copy core templates, change images and logos, modify module chrome and positions, and make other minor customizations. It explains how to edit template files, parameters, and code to customize templates while avoiding modifying core template files directly. Tools for template development and debugging like the Web Developer toolbar are also mentioned.
Italy Agriculture Equipment Market Outlook to 2027harveenkaur52
Agriculture and Animal Care
Ken Research has an expertise in Agriculture and Animal Care sector and offer vast collection of information related to all major aspects such as Agriculture equipment, Crop Protection, Seed, Agriculture Chemical, Fertilizers, Protected Cultivators, Palm Oil, Hybrid Seed, Animal Feed additives and many more.
Our continuous study and findings in agriculture sector provide better insights to companies dealing with related product and services, government and agriculture associations, researchers and students to well understand the present and expected scenario.
Our Animal care category provides solutions on Animal Healthcare and related products and services, including, animal feed additives, vaccination
Meet up Milano 14 _ Axpo Italia_ Migration from Mule3 (On-prem) to.pdfFlorence Consulting
Quattordicesimo Meetup di Milano, tenutosi a Milano il 23 Maggio 2024 dalle ore 17:00 alle ore 18:30 in presenza e da remoto.
Abbiamo parlato di come Axpo Italia S.p.A. ha ridotto il technical debt migrando le proprie APIs da Mule 3.9 a Mule 4.4 passando anche da on-premises a CloudHub 1.0.
This document discusses the Smart Search feature in Joomla. It provides an overview of how Smart Search improved upon the original Joomla search by adding features like auto-completion, faceted search, relevancy ordering, and more. It then discusses how Smart Search works under the hood, including how it indexes content, stems terms, classifies content with taxonomies, and handles queries. Finally, it outlines future directions for Smart Search, such as improved language support, preserving filters, and developing a search API.
The document summarizes discussions from a Joomla Production Leadership Team summit and JoomlaDay USA West 2010 conference. Key points include:
- The PLT discussed moving to more frequent releases every 6 months, splitting the Joomla platform from the CMS, and establishing an open development process for new features.
- Major companies like eBay and Microsoft are adopting Joomla for internal use and contributing code back to the project. eBay uses Joomla for an internal analytics portal.
- A new Joomla Press imprint was announced for publishing books about Joomla through one of the world's largest publishers, Pearson.
This document discusses optimizing Joomla templates for high performance. It recommends tools like Firebug and YSlow to measure performance, and optimizing assets like JavaScript, CSS, and images. JavaScript should be moved to the end of the page, unused code removed, and files minified and compressed. CSS should be moved to the head and stripped of unused rules. Images can be optimized by using sprites, compression, and delivery via a CDN. The optimization process involves these techniques applied at each stage of development.
Joomla Day UK 2009 Template Design PresentationChris Davenport
The document discusses best practices for designing Joomla templates, including:
1. Using reset stylesheets and CSS frameworks to provide a consistent base.
2. Understanding the two-phase template execution process of PHP code execution followed by module inclusion.
3. Accessing the template parameters, document properties, and Joomla API classes to customize the template.
The document provides instructions for modifying Joomla templates, including how to copy core templates, change images and logos, modify module chrome and positions, and make other minor customizations. It explains how to edit template files, parameters, and code to customize templates while avoiding modifying core template files directly. Tools for template development and debugging like the Web Developer toolbar are also mentioned.
Italy Agriculture Equipment Market Outlook to 2027harveenkaur52
Agriculture and Animal Care
Ken Research has an expertise in Agriculture and Animal Care sector and offer vast collection of information related to all major aspects such as Agriculture equipment, Crop Protection, Seed, Agriculture Chemical, Fertilizers, Protected Cultivators, Palm Oil, Hybrid Seed, Animal Feed additives and many more.
Our continuous study and findings in agriculture sector provide better insights to companies dealing with related product and services, government and agriculture associations, researchers and students to well understand the present and expected scenario.
Our Animal care category provides solutions on Animal Healthcare and related products and services, including, animal feed additives, vaccination
Meet up Milano 14 _ Axpo Italia_ Migration from Mule3 (On-prem) to.pdfFlorence Consulting
Quattordicesimo Meetup di Milano, tenutosi a Milano il 23 Maggio 2024 dalle ore 17:00 alle ore 18:30 in presenza e da remoto.
Abbiamo parlato di come Axpo Italia S.p.A. ha ridotto il technical debt migrando le proprie APIs da Mule 3.9 a Mule 4.4 passando anche da on-premises a CloudHub 1.0.
Ready to Unlock the Power of Blockchain!Toptal Tech
Imagine a world where data flows freely, yet remains secure. A world where trust is built into the fabric of every transaction. This is the promise of blockchain, a revolutionary technology poised to reshape our digital landscape.
Toptal Tech is at the forefront of this innovation, connecting you with the brightest minds in blockchain development. Together, we can unlock the potential of this transformative technology, building a future of transparency, security, and endless possibilities.
Gen Z and the marketplaces - let's translate their needsLaura Szabó
The product workshop focused on exploring the requirements of Generation Z in relation to marketplace dynamics. We delved into their specific needs, examined the specifics in their shopping preferences, and analyzed their preferred methods for accessing information and making purchases within a marketplace. Through the study of real-life cases , we tried to gain valuable insights into enhancing the marketplace experience for Generation Z.
The workshop was held on the DMA Conference in Vienna June 2024.
APNIC Foundation, presented by Ellisha Heppner at the PNG DNS Forum 2024APNIC
Ellisha Heppner, Grant Management Lead, presented an update on APNIC Foundation to the PNG DNS Forum held from 6 to 10 May, 2024 in Port Moresby, Papua New Guinea.
APNIC Foundation, presented by Ellisha Heppner at the PNG DNS Forum 2024
Leave this to me. I'm British. I know how to queue.
1. “Leave it to me,
I'm British,
I know how to queue”
Chris Davenport
Joomla Production Leadership Team
J and Beyond 2014
2. Leave it to me, I'm British, I know how to queue.
3. Leave it to me, I'm British, I know how to queue.
4. Leave it to me, I'm British, I know how to queue.
“to form a line while waiting for something”
5. Leave it to me, I'm British, I know how to queue.
Queues are bad?
6. Leave it to me, I'm British, I know how to queue.
We hate queues
7. Leave it to me, I'm British, I know how to queue.
Especially when it's raining
8. Leave it to me, I'm British, I know how to queue.
Why make me wait!?
9. Leave it to me, I'm British, I know how to queue.
The aim of this presentation
10. Leave it to me, I'm British, I know how to queue.
The aim of this presentation
Some queues are a “good thing”
11. Leave it to me, I'm British, I know how to queue.
Sometimes it's good to wait
12. Leave it to me, I'm British, I know how to queue.
Synchronisation is good
13. Leave it to me, I'm British, I know how to queue.
Good queues
Bad queues
14. Leave it to me, I'm British, I know how to queue.
Queue messages, not people
15. Leave it to me, I'm British, I know how to queue.
Why queue at all?
16. Leave it to me, I'm British, I know how to queue.
1: Image processing
17. Leave it to me, I'm British, I know how to queue.
2: Sending documents
18. Leave it to me, I'm British, I know how to queue.
Queue messages, not people
Asynchronous message queues
19. Leave it to me, I'm British, I know how to queue.
What is a message queue?
20. Leave it to me, I'm British, I know how to queue.
What is a message queue?
Client
(Producer)
Queue
21. Leave it to me, I'm British, I know how to queue.
What is a message queue?
Server
(Consumer)
Queue
22. Leave it to me, I'm British, I know how to queue.
1: Image processing
23. Leave it to me, I'm British, I know how to queue.
1: Image processing
Takes time.
Queue: But not the user's time.
Requires a lot of memory.
Queue: But not the user's memory.
Demand spikes can threaten the server.
Queue: Naturally throttled.
24. Leave it to me, I'm British, I know how to queue.
2: Sending documents
25. Leave it to me, I'm British, I know how to queue.
It's about decoupling
●
Decoupling in space
●
Decoupling in time
●
Decoupling synchronisation
26. Leave it to me, I'm British, I know how to queue.
Space decoupling
●
Different processes
●
Different machines
●
Different locations
27. Leave it to me, I'm British, I know how to queue.
Time decoupling
●
Heavy tasks may be deferred
●
Task streams may be throttled
●
Can cope with unreliable systems
●
Can cope with unreliable networks
28. Leave it to me, I'm British, I know how to queue.
Synchronisation decoupling
●
Clients should never block.
●
Redundancy
●
Scalability
29. Leave it to me, I'm British, I know how to queue.
Queue patterns
30. Leave it to me, I'm British, I know how to queue.
Request - Reply
Producer Q
12345
Consumer
31. Leave it to me, I'm British, I know how to queue.
Request - Reply
Producer ConsumerQ 1
2345
32. Leave it to me, I'm British, I know how to queue.
Request - Reply
Producer Q
Q
R1
Consumer
2345
33. Leave it to me, I'm British, I know how to queue.
Request - Reply
Producer Q
Q
R1
Consumer2
345
34. Leave it to me, I'm British, I know how to queue.
Request - Reply
Producer Q
Q? R1
Consumer2
345
35. Leave it to me, I'm British, I know how to queue.
Request - Reply
Producer Q
Q?
Consumer
Consumer
Consumer
12345
Consumer
36. Leave it to me, I'm British, I know how to queue.
Request - Reply
Producer Q
Q?
2345
Consumer
Consumer
Consumer
Consumer1
37. Leave it to me, I'm British, I know how to queue.
Request - Reply
Producer Q
Q?
345
Consumer
Consumer
Consumer
Consumer1
2
38. Leave it to me, I'm British, I know how to queue.
Request - Reply
Producer Q
Q?
45
Consumer
Consumer
Consumer
Consumer1
2
3
39. Leave it to me, I'm British, I know how to queue.
Request - Reply
Producer Q
Q?
5
Consumer
Consumer
Consumer
Consumer1
2
3
4
40. Leave it to me, I'm British, I know how to queue.
Request - Reply
Producer Q
Q?
R1
Consumer
Consumer
Consumer
Consumer
2
3
4
5
41. Leave it to me, I'm British, I know how to queue.
Request - Reply
Producer Q
Q?
R1
Consumer
Consumer
Consumer
Consumer5
2
3
4
42. Leave it to me, I'm British, I know how to queue.
Pipeline
Producer Q Consumer
12345
ConsumerQ
ConsumerQ
43. Leave it to me, I'm British, I know how to queue.
Pipeline
Producer Q Consumer1
2345
ConsumerQ
ConsumerQ
44. Leave it to me, I'm British, I know how to queue.
Pipeline
Producer Q
Consumer
Consumer
Q
1'
2
345
ConsumerQ
45. Leave it to me, I'm British, I know how to queue.
Pipeline
Producer Q
Consumer
Consumer
Q 1'
2'
3
45
ConsumerQ
46. Leave it to me, I'm British, I know how to queue.
Pipeline
Producer Q
Consumer
Consumer
Q 2'
3'
4
5
ConsumerQ
1''
47. Leave it to me, I'm British, I know how to queue.
Pipeline
Producer Q
Consumer
Consumer
Q 3'
4'
5
ConsumerQ
2''
1''
48. Leave it to me, I'm British, I know how to queue.
Publish - Subscribe
Producer Q
Consumer
Consumer
Consumer
Consumer
12345
49. Leave it to me, I'm British, I know how to queue.
Publish - Subscribe
Producer Q
2345
Consumer
Consumer
Consumer
Consumer1
1
1
1
50. Leave it to me, I'm British, I know how to queue.
Queue packages
51. Leave it to me, I'm British, I know how to queue.
Queue packages
AMQP – Apache Qpid, OpenAMQ, RabbitMQ
ZeroMQ
IBM WebsphereMQ
Amazon SQS
MSMQ
MQTT
52. Leave it to me, I'm British, I know how to queue.
Queue characteristics
Locality
Persistent or non-persistent
Messages have an “in-flight” period or not
Preserve message order or not
Eliminate duplicates or not
Queue full behaviour
Message delivery guarantees
53. Leave it to me, I'm British, I know how to queue.
Using queues in Joomla
54. Leave it to me, I'm British, I know how to queue.
Using queues in Joomla
Most require special server software
Not available on most shared hosts
55. Leave it to me, I'm British, I know how to queue.
Using queues in Joomla
Need a native PHP implementation
Optional adapters for
mainstream message queues
56. Leave it to me, I'm British, I know how to queue.
Queuing in Joomla
GitHub: chrisdavenport/joomla-mq
57. Leave it to me, I'm British, I know how to queue.
Queuing in Joomla
Provide a very basic standard interface to a choice
of message queues.
Currently supports: Array, filesystem, database,
Unix System V, Amazon SQS.
Documented and unit tested.
Pull requests welcome.
58. Leave it to me, I'm British, I know how to queue.
JMq sending a message
$config = new JRegistry($configData);
$q = new JMqQueue($config);
$q->send('myqueue', 'Hello World');
59. Leave it to me, I'm British, I know how to queue.
JMq receiving a message
$config = new JRegistry($configData);
$q = new JMqQueue($config);
$msg = $q->receive('myqueue');
// Process the message here.
$q->delete('myqueue', $msg->messageid);
60. Leave it to me, I'm British, I know how to queue.
Problem...
Generally needs some kind of cron.
Low-cost hosts will need to implement some kind
of “pseudo-cron” system.
Might be possible to use a plugin event to
transparently process a queue on hosts that do
not allow cron.
61. Leave it to me, I'm British, I know how to queue.
Joomla use-cases
Image resizing and watermarking.
Smart Search indexing.
Hit counters.
Ecommerce.
Throttling.
Monitoring, logging, clickstream analysis.
Statistics and report generation.
62. Leave it to me, I'm British, I know how to queue.
Convinced?
63. Leave it to me, I'm British, I know how to queue.
Queue Tips
64. Leave it to me, I'm British, I know how to queue.
Queues are cheap
So feel free to use lots of them
65. Leave it to me, I'm British, I know how to queue.
Avoid fat messages
Message systems can rarely handle
large messages efficiently
66. Leave it to me, I'm British, I know how to queue.
Guaranteed delivery
There's no such thing
Murphy's Law will always win in the end
67. Leave it to me, I'm British, I know how to queue.
Duplicate messages
Assume that some messages
may be duplicated
68. Leave it to me, I'm British, I know how to queue.
Message ordering
Don't assume messages will arrive
in the same order they were sent
69. Leave it to me, I'm British, I know how to queue.
Avoid transactions
Atomic transactions across message queues
are fraught with difficulty, so avoid them
If you absolutely must have transactions
then lookup Raft and Paxos algorithms
70. Leave it to me, I'm British, I know how to queue.
Error handling
Invalid or undeliverable messages
should be forwarded to a dead-letter queue
Process failures should be
reported to an error queue
71. Leave it to me, I'm British, I know how to queue.
Questions?
72. Leave it to me, I'm British, I know how to queue.
Image credits 1
http://commons.wikimedia.org/wiki/File:Queuing_z01.jpg?uselang=en-gb
http://commons.wikimedia.org/wiki/File:Form_an_orderly_queue_to_the_left_%286180460759%29.jpg
http://commons.wikimedia.org/wiki/File:Angry_woman.jpg
http://commons.wikimedia.org/wiki/File:20110529_London_38.JPG
http://commons.wikimedia.org/wiki/File:Take_off_queue,_Heathrow,_10_Sept._2010_-_Flickr_-_PhillipC.jpg
http://commons.wikimedia.org/wiki/File:DigitalPicture.jpg
http://commons.wikimedia.org/wiki/File:Contrast_improvement.jpg
http://commons.wikimedia.org/wiki/File:Base-isolation.gif
73. Leave it to me, I'm British, I know how to queue.
Image credits 2
http://commons.wikimedia.org/wiki/File:Traffic_queues_likely.JPG
http://commons.wikimedia.org/wiki/File:Motorway_queue_near_Lisburn_%282%29_-_geograph.org.uk_-
_1380275.jpg
http://commons.wikimedia.org/wiki/File:Queue_for_the_Banksy_Exhibition_-_geograph.org.uk_-
_1429992.jpg
http://commons.wikimedia.org/wiki/File:1925_ES%26ARobinson_Invoice_with_illustrations.jpg?
uselang=en-gb
http://commons.wikimedia.org/wiki/File:Cirencester_..._snazzy_trolley..jpg
http://commons.wikimedia.org/wiki/File:Copertina_facebook.jpg
http://commons.wikimedia.org/wiki/File:Q_Tips_plain_BG.jpg?uselang=en-gb
http://commons.wikimedia.org/wiki/File:Bus_queue_in_Redhill_Road,_Cobham_-_geograph.org.uk_-
_1800438.jpg
74. Leave it to me, I'm British, I know how to queue.
Image credits 3
http://commons.wikimedia.org/wiki/File:Queue_at_Pashupatinath01.JPG
http://commons.wikimedia.org/wiki/File:Cracow_queue_1986.jpg (short queue)
http://commons.wikimedia.org/wiki/File:Newport_Staplers_Road_traffic_queue_4.JPG
http://commons.wikimedia.org/wiki/File:Queue_outside_a_soup_kitchenat_Klostertorv_in_
%C3%85lborg_1943.jpg
http://commons.wikimedia.org/wiki/File:Bathroom_Scale.jpg?uselang=en-gb
http://commons.wikimedia.org/wiki/File:Super_Cheap_Auto.jpg
http://commons.wikimedia.org/wiki/File:Clones_id.jpg
http://commons.wikimedia.org/wiki/File:Blue_Angels_all_in_a_line_%282501423714%29.jpg
75. Leave it to me, I'm British, I know how to queue.
Image credits 4
http://commons.wikimedia.org/wiki/File:Three_in_a_line_-_geograph.org.uk_-_652726.jpg
http://commons.wikimedia.org/wiki/File:Viruses.jpg