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The document discusses the benefits of exercise for mental health. Regular physical activity can help reduce anxiety and depression and improve mood and cognitive functioning. Exercise causes chemical changes in the brain that may help protect against mental illness and improve symptoms.
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The document discusses Google's efforts to simplify open source software development. It outlines Google's development tools like Google Web Toolkit, Android development tools, and Google Plugin for Eclipse which aim to simplify and optimize the development process. It also discusses Google Project Hosting for hosting open source projects and Google App Engine, Cloud SQL, and Cloud Storage for deploying applications in a scalable and reliable manner. The overall goal is to make open source development faster and easier at all stages from development to deployment.
The document outlines Oracle's MySQL product roadmap, including recent and upcoming releases of MySQL Database, MySQL Cluster, MySQL Enterprise Monitor, and MySQL Workbench. It highlights key features and performance improvements in areas such as scalability, security, and high availability. It also discusses Oracle's ongoing investment in and certifications for MySQL to make it a better open source database for web and enterprise applications.
The document discusses the benefits of exercise for mental health. Regular physical activity can help reduce anxiety and depression and improve mood and cognitive function. Exercise causes chemical changes in the brain that may help protect against mental illness and improve symptoms.
Zend Server is a web application server that helps developers increase productivity, deploy applications faster while maintaining quality, and meet service level agreements by providing a standardized PHP stack, automated deployment and management tools, application performance monitoring and diagnostics like code tracing to reduce problem resolution times.
The document discusses the benefits of exercise for mental health. Regular physical activity can help reduce anxiety and depression and improve mood and cognitive functioning. Exercise causes chemical changes in the brain that may help protect against mental illness and improve symptoms.
The document outlines the steps taken to implement Dijkstra's shortest path algorithm using test-driven development in PHP. It describes 21 iterative steps where tests were added and code was implemented and refactored to satisfy the tests. The process involved adding classes for vertices and graphs, implementing potential calculation and path finding methods, removing the graph class, adding exceptions, splitting methods, and measuring code quality with tools like PHPLOC and code coverage.
The document discusses Google's efforts to simplify open source software development. It outlines Google's development tools like Google Web Toolkit, Android development tools, and Google Plugin for Eclipse which aim to simplify and optimize the development process. It also discusses Google Project Hosting for hosting open source projects and Google App Engine, Cloud SQL, and Cloud Storage for deploying applications in a scalable and reliable manner. The overall goal is to make open source development faster and easier at all stages from development to deployment.
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- All code is released under the Apache License and development occurs through biannual design summits.
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Divyanshu open stack presentation -osi-pptsuniltomar04
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- Rising revenues and earnings for cloud companies like AWS and Rackspace
- The history and timeline of OpenStack starting in 2010 with over 140 organizations now participating
- The core components of OpenStack including Nova, Swift, and Glance
- Demonstrations of OpenStack architecture, Nova scheduling flows, and the Glance image service
- Recommended resources for learning more and playing with OpenStack including downloads.
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2. To ensure cross-browser compatibility, a JavaScript library is needed to enable HTML5 features in older browsers.
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IPv6 Adoption in the RIPE NCC Service RegionRIPE NCC
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This document discusses Clojure's software transactional memory (STM) which allows coordinated changes to shared state without locking. STM transactions are atomic, consistent, and isolated like database transactions. An example shows threads A-E changing shared state atomically using STM functions like dosync, set-ref, and alter instead of atoms which are not transactional. STM uses MVCC and snapshot isolation under the hood to enable parallel changes without blocking.
RIPE Atlas is an active measurement network with geographically distributed probes that conduct continuous network measurements. It provides benefits over individual measurement efforts by offering more vantage points, lower costs, and an independent data source. The document outlines RIPE Atlas' capabilities like real-time maps of network performance and a user-defined measurement system. Future plans include expanding the types of measurements, improving data access, and deploying more probes worldwide.
The document summarizes Oracle's MySQL product roadmap and strategy. Key points include:
- Oracle plans to continue rapid innovation and improvements to MySQL to make it the #1 open source database for web applications.
- MySQL Enterprise Edition offers the most secure, scalable and supported version of MySQL with tools like MySQL Enterprise Monitor.
- Benchmarks show significant performance gains for MySQL 5.5 over previous versions, especially at scale on multi-core systems.
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Rajashekaran vengalil building cross browser html5 websitesOpenSourceIndia
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Software defined networking (SDN) uses OpenFlow to separate the control plane of network switches from the data plane. This allows for network programmability and innovation through open protocols and APIs. SDN has the potential to reduce network costs, increase flexibility, and lead to new use cases. However, challenges remain around OpenFlow limitations, scalability, and vendor dependence.
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2. Sorry for the ugly slide.
There will be others.
Really sorry.
Bengaluru, 20-22 November 2011
3. REST in a nutshell
Bengaluru, 20-22 November 2011
4. 2000
Fielding's dissertation:
REpresentational
State
Transfer
http://www.ics.uci.edu/~fielding/pubs/dissertation/rest_arch_style.htm
Bengaluru, 20-22 November 2011
5. REST in a nutshell:
1. Client <> Server
Bengaluru, 20-22 November 2011
6. REST in a nutshell:
2. Stateless
Bengaluru, 20-22 November 2011
7. Servers do not keep any
informations the clients uses
during different requests.
Bengaluru, 20-22 November 2011
32. RESTful clients should
be driven by service's
hypermedia controls
Roy Fielding : http://roy.gbiv.com/untangled/2008/rest-apis-must-be-hypertext-driven
Bengaluru, 20-22 November 2011
43. GET /users/300
Host: www.example.com
HTTP/1.1 500 Internal Server Error
Etag: 1234
X-Powered-By: php/5.3
...
The record cannot be found
Bengaluru, 20-22 November 2011
44. GET /users/300
Host: www.example.com
HTTP/1.1 500 Internal Server Error
Etag: 1234
X-Powered-By: php/5.3
...
The record cannot be found
Bengaluru, 20-22 November 2011
45. The HTTP protocol is awesome,
and lets you return meaningful and
universally-understood status codes
Bengaluru, 20-22 November 2011
53. And meanwhile, at Facebook...
12TB of new data every day
(1 year ago)
500 million users
Bengaluru, 20-22 November 2011
54. And meanwhile, at Google...
1 billion
unique monthly googlers
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55. via HTTP , baby!
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56. HTTP in a nutshell:
1. Client <> Server
Bengaluru, 20-22 November 2011
57. HTTP in a nutshell:
2. Stateless
Bengaluru, 20-22 November 2011
58. HTTP in a nutshell:
3. widespread cache spec
http://www.w3.org/Protocols/rfc2616/rfc2616-sec13.html
Bengaluru, 20-22 November 2011
59. HTTP in a nutshell:
Lao Tze Song using Firefox 6
Company proxy
Great chinese (fire)wall
Reverse proxy
Origin server
4. Layered system
Bengaluru, 20-22 November 2011
60. HTTP in a nutshell:
5. it is the uniform interface
between clients and servers
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76. HTTP/1.1 200 OK
Host: www.example.com
Expires: Tue, 31 Jan 2011 01:00 GMT
Bengaluru, 20-22 November 2011
77. HTTP/1.1 200 OK
Host: www.example.com
Cache-Control: max-age=60, public
Bengaluru, 20-22 November 2011
78. HTTP/1.1 200 OK
Host: www.example.com
Cache-Control: max-age=60, public
Bengaluru, 20-22 November 2011
79. HTTP/1.1 200 OK
Host: www.example.com
Cache-Control: max-age=60, public
Cacheable for 60 seconds
Bengaluru, 20-22 November 2011
80. HTTP/1.1 200 OK
Host: www.example.com
Cache-Control: max-age=60, public
Cacheable by both local and shared caches
Bengaluru, 20-22 November 2011
81. You can also cache with
validation
(Etags, If-None-Match, ...)
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82. Why HTTP caching
is so
important?
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83. Ask yourself:
as a developer, what do I want
on my application?
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84. Evolve
Loose coupling
Work less
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85. Evolve
Because you want your platform to extensible
Loose coupling
Work less
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86. Evolve
Because you want your platform to extensible
Loose coupling
Because you want it to be easy to integrate with, evolve, plug
and mantain
Work less
Bengaluru, 20-22 November 2011
87. Evolve
Because you want your platform to extensible
Loose coupling
Because you want it to be easy to integrate with, evolve, plug
and mantain
Work less
Because every LoC is bug-prone and our man-day is a hard-to-
scale cost
Bengaluru, 20-22 November 2011
139. because caching is bound to the protocol, HTTP, not
to your implementation ( Sf, RoR, Django )
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140. but hey, you say
Bengaluru, 20-22 November 2011
141. HTTP's cache fails when dealing with really dynamic
pages, because consumers will always have to hit the
origin server, although a part of the page would be
cacheable ( header and footer, for example )
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143. ESI was built for that
http://www.w3.org/TR/esi-lang
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144. Edge Side Includes
A de facto standard for bla bla bla...
Bengaluru, 20-22 November 2011
145. Edge Side Includes
A de facto standard for bla bla bla...
Server side includes ( not SSI! ) usually handled by the
architecture's ESI processor.
http://www.w3.org/TR/esi-lang
http://www.w3.org/TR/edge-arch