This document discusses continuous delivery and its benefits, including getting feedback from users more quickly, responding faster to market changes, and improving reliability. It advocates treating all code, infrastructure, and configurations like code by automating testing and deployment. Continuous delivery keeps software always ready for production by integrating and testing all changes.
Moving QA from Reactive to Proactive with qTestQASymphony
An overview of QASymphony's qTest product suite and product roadmap, including how qTest continues to push forward in the areas of agile testing, exploratory testing, BDD, automation integration, quality metrics and applied AI for testing, and how QASymphony is working to help test teams transition from reactive to proactive QA.
Quality Jam 2017: Jesse Reed & Kyle McMeekin "Test Case Management & Explorat...QASymphony
Jesse Reed, QA Director at Questar, and Kyle McMeekin discuss how Questar made the switch to qTest and the key factors you should consider in test case management and exploratory testing.
QASymphony Atlanta Customer User Group Fall 2017QASymphony
Thanks to all who came out and were part of our first customer user group! All our expectations for the day were exceeded and we hope you feel the same way.
If you weren't able to make it, here's what you missed:
Judy Chung, Product Manager, gave a summary of recent and upcoming features (site level fields, new UI of TestPad) as well as a sneak preview of our newest product (codename: Automation Hub).
Elise Carmichael, VP of Quality, demo-ed several best practice topics, ranging from organizing your qTest repository to reviewing the different automation integration options.
Erika Chestnut, Director of QA at Sterling Talent Solutions, shared her story as a QASymphony customer who recently replaced HP Quality Center with qTest and provided insight into leading change management across her organization.
Make it reversible - Stephen O'Brien at Inside Intercom AustinIntercom
We can’t go back in time, so we have to be careful with the decisions we make and the actions we take. But in software development we can make what we do easily reversible. Stephen O'Brien, Intercom Director of Engineering, on the benefits of making it reversible.
How do you address an organisations’ “quality problem”? Mark will be talking about his role as Head of Quality at Cambridge Assessment and exploring how he is approaching getting the answers to that very question.
Diving into the World of Test Automation The Approach and the TechnologiesQASymphony
This presentation was originally given at Quality Jam London. Elise covered test automation and the progression for test automation that you might encounter. The session agenda included:
The stages of the test team
Why are we automating?
What are we automating?
How are we automating?
What languages should we use?
What frameworks and libraries should we use?
Open source or proprietary?
Learn more at www.qualityjam.com
Moving QA from Reactive to Proactive with qTestQASymphony
An overview of QASymphony's qTest product suite and product roadmap, including how qTest continues to push forward in the areas of agile testing, exploratory testing, BDD, automation integration, quality metrics and applied AI for testing, and how QASymphony is working to help test teams transition from reactive to proactive QA.
Quality Jam 2017: Jesse Reed & Kyle McMeekin "Test Case Management & Explorat...QASymphony
Jesse Reed, QA Director at Questar, and Kyle McMeekin discuss how Questar made the switch to qTest and the key factors you should consider in test case management and exploratory testing.
QASymphony Atlanta Customer User Group Fall 2017QASymphony
Thanks to all who came out and were part of our first customer user group! All our expectations for the day were exceeded and we hope you feel the same way.
If you weren't able to make it, here's what you missed:
Judy Chung, Product Manager, gave a summary of recent and upcoming features (site level fields, new UI of TestPad) as well as a sneak preview of our newest product (codename: Automation Hub).
Elise Carmichael, VP of Quality, demo-ed several best practice topics, ranging from organizing your qTest repository to reviewing the different automation integration options.
Erika Chestnut, Director of QA at Sterling Talent Solutions, shared her story as a QASymphony customer who recently replaced HP Quality Center with qTest and provided insight into leading change management across her organization.
Make it reversible - Stephen O'Brien at Inside Intercom AustinIntercom
We can’t go back in time, so we have to be careful with the decisions we make and the actions we take. But in software development we can make what we do easily reversible. Stephen O'Brien, Intercom Director of Engineering, on the benefits of making it reversible.
How do you address an organisations’ “quality problem”? Mark will be talking about his role as Head of Quality at Cambridge Assessment and exploring how he is approaching getting the answers to that very question.
Diving into the World of Test Automation The Approach and the TechnologiesQASymphony
This presentation was originally given at Quality Jam London. Elise covered test automation and the progression for test automation that you might encounter. The session agenda included:
The stages of the test team
Why are we automating?
What are we automating?
How are we automating?
What languages should we use?
What frameworks and libraries should we use?
Open source or proprietary?
Learn more at www.qualityjam.com
Market Trends: What new developments are shaping the way teams work?
Replacing HP Quality Center?: What hurdles are typically faced in replacing legacy Test Management?
Moving Beyond HP Unified Functional Tester?: What options exist to move to more modern automation tools?
Migration Best Practices: How are leading companies making the switch?
Fail Fast and Win with Continuous Testing: Uri Scheiner – Jenkins WorldCA Technologies
At Jenkins World, Uri Scheiner, Sr. Director of Product Management in Continuous Delivery, talked about one of the most common places bottlenecks lurk (QA) and how your organization can build testing into your development cycles.
Continuous delivery orchestration, release planning and management, and end to end analytics are available to every team with just a few clicks.
Try Continuous Delivery Director free: https://cddirector.io/
Continuous Testing: Preparing for DevOpsSTePINForum
by Ingo Philipp, Distinguished Evangelist, Tricentis at STeP-IN SUMMIT 2018 - 15th International Conference on Software Testing on August 30, 2018 at Taj, MG Road, Bengaluru
Target DevOps Bottlenecks with Connected Lifecycle DataTasktop
Transforming your fragmented software development and delivery capability into a highly efficient DevOps machine won’t happen overnight. To deliver customer value faster, you must go on a journey of continuous improvement to connect teams, automate processes and eliminate waste from the value chain. This requires you to:
* Understand your value chain
* Connect the value chain to eliminate waste and establish end-to-end traceability
* Collect and measure end-to-end software delivery metrics
* Target bottlenecks and waste, and identify solutions using more focused metrics
The lack of visibility into these metrics is where many DevOps initiatives fall short. Much of the waste in the value chain happens at the handoffs between teams, so it’s impossible to eliminate this waste if you are only measuring KPIs within the silos.
Learn how our customers are using connected lifecycle data to guide their enterprise DevOps journeys.
Testing In Production (TiP) Advances with Big Data & the CloudSOASTA
Testing in Production (TiP) has moved from taboo to accepted practice owing to its ability to measure reality and provide actionable feedback. These risks can be mitigated by using proven methodologies, methodologies borne of experience and tools built specifically to handle TiP’s unique requirements.
Big Data enables TIP by analyzing user behavior then creating realistic tests. During testing, cloud-based resources are used for the huge data volumes and processed within-memory technology specifically designed for this process
Microsoft’s Seth Eliot is a TiP pioneer and SOASTA’s Rob Holcomb has helped evolve the practice with hundreds of SOASTA customers. Catch this webinar, now on-demand, as they dig into:
How to leverage both active and passive monitoring for TiP
Testing and measuring system stress in production
Experimentation and iterative improvement
How SOASTA CloudTest facilitates TiP for organizations of all sizes
DevOps Pipelines and Metrics Driven Feedback LoopsAndreas Grabner
The goal behind devops is Faster Lead Times
What this really means for Software Delivery -> my Kodak/Smart Phone Analogy
How and Which Metrics to use along the Delivery Pipeline to make better decisions along the way.
Lightning talk for DevOpsDays Austin 2013 on taking releases from a 10 week to 1 week cadence. Sorry about the format, had to go from Keynote to PDF and since it was a lightning talk all the actual content's in the notes.
Support Federal Software Development Contracts with End-to-End TraceabilityTasktop
Slides from Tasktop's webinar in partnership with Carahsoft explaining how government agencies and contractors can achieve traceability across the lifecycle and timelier ALM data, allowing for better decision making and planning for the programs.
Jonathan Alexander, CTO of QASymphony and other Product Leaders from QASymphony walked through some of the exciting product features and enhancements coming in 2016 during Quality Jam 2016.
A Quick Intro to Agile, DevOps & Lean Development in the EnterpriseTasktop
Agile, DevOps and Lean are common approaches to modern software delivery. But how are they actually being used in large enterprise? What do you need to consider to make your transformation successful? Visit www.tasktop.com for more information.
DOES16 San Francisco - David Blank-Edelman - Lessons Learned from a Parallel ...Gene Kim
Lessons Learned from a Parallel Universe
David N. Blank-Edelman, Technical Evangelist, Apcera
Just within the last ten or so years, we have seen at least two separate communities evolve at the crossroads of development and operations. The first—DevOps—grew up very much in public, the second matured sequestered within the halls of “special” companies like Google and Facebook and is only now starting to gain visibility and traction in the wider world. The DevOps and Site Reliability Engineering (SRE) communities barely speak, yet both have common ancestors and much to offer each other. Let’s look at what they have in common, how they differ, and what are the key things we can learn from both.
DevOps Enterprise Summit San Francisco 2016
The presentation at Agile Tour 2010 Shanghai.
It's about a new Team Model integrates Developers and Testers; a new Lifecycle Model integrates Development and Testing; and a new Development activities driven by Tests.
Integration is at the heart of value stream improvement. In software, your value stream spans different domains and tools, which makes integration unavoidable. You need a seamless flow of information between people and tools to refine your delivery process.
Integration can be complex, but the difficulty is compounded when you cannot see everything that needs to be connected. When you can actually see what’s flowing between systems in a simple, intuitive way, you are well on your way to being able to improve your value stream.
In this webinar we’ll demonstrate how to:
* Create a connected value stream by automating artifact flow across your software development and delivery tools
* Provide value stream visibility to senior leadership with Tasktop’s new Integration Landscape View
* Easily scale and manage integrations with model-based integration management
Market Trends: What new developments are shaping the way teams work?
Replacing HP Quality Center?: What hurdles are typically faced in replacing legacy Test Management?
Moving Beyond HP Unified Functional Tester?: What options exist to move to more modern automation tools?
Migration Best Practices: How are leading companies making the switch?
Fail Fast and Win with Continuous Testing: Uri Scheiner – Jenkins WorldCA Technologies
At Jenkins World, Uri Scheiner, Sr. Director of Product Management in Continuous Delivery, talked about one of the most common places bottlenecks lurk (QA) and how your organization can build testing into your development cycles.
Continuous delivery orchestration, release planning and management, and end to end analytics are available to every team with just a few clicks.
Try Continuous Delivery Director free: https://cddirector.io/
Continuous Testing: Preparing for DevOpsSTePINForum
by Ingo Philipp, Distinguished Evangelist, Tricentis at STeP-IN SUMMIT 2018 - 15th International Conference on Software Testing on August 30, 2018 at Taj, MG Road, Bengaluru
Target DevOps Bottlenecks with Connected Lifecycle DataTasktop
Transforming your fragmented software development and delivery capability into a highly efficient DevOps machine won’t happen overnight. To deliver customer value faster, you must go on a journey of continuous improvement to connect teams, automate processes and eliminate waste from the value chain. This requires you to:
* Understand your value chain
* Connect the value chain to eliminate waste and establish end-to-end traceability
* Collect and measure end-to-end software delivery metrics
* Target bottlenecks and waste, and identify solutions using more focused metrics
The lack of visibility into these metrics is where many DevOps initiatives fall short. Much of the waste in the value chain happens at the handoffs between teams, so it’s impossible to eliminate this waste if you are only measuring KPIs within the silos.
Learn how our customers are using connected lifecycle data to guide their enterprise DevOps journeys.
Testing In Production (TiP) Advances with Big Data & the CloudSOASTA
Testing in Production (TiP) has moved from taboo to accepted practice owing to its ability to measure reality and provide actionable feedback. These risks can be mitigated by using proven methodologies, methodologies borne of experience and tools built specifically to handle TiP’s unique requirements.
Big Data enables TIP by analyzing user behavior then creating realistic tests. During testing, cloud-based resources are used for the huge data volumes and processed within-memory technology specifically designed for this process
Microsoft’s Seth Eliot is a TiP pioneer and SOASTA’s Rob Holcomb has helped evolve the practice with hundreds of SOASTA customers. Catch this webinar, now on-demand, as they dig into:
How to leverage both active and passive monitoring for TiP
Testing and measuring system stress in production
Experimentation and iterative improvement
How SOASTA CloudTest facilitates TiP for organizations of all sizes
DevOps Pipelines and Metrics Driven Feedback LoopsAndreas Grabner
The goal behind devops is Faster Lead Times
What this really means for Software Delivery -> my Kodak/Smart Phone Analogy
How and Which Metrics to use along the Delivery Pipeline to make better decisions along the way.
Lightning talk for DevOpsDays Austin 2013 on taking releases from a 10 week to 1 week cadence. Sorry about the format, had to go from Keynote to PDF and since it was a lightning talk all the actual content's in the notes.
Support Federal Software Development Contracts with End-to-End TraceabilityTasktop
Slides from Tasktop's webinar in partnership with Carahsoft explaining how government agencies and contractors can achieve traceability across the lifecycle and timelier ALM data, allowing for better decision making and planning for the programs.
Jonathan Alexander, CTO of QASymphony and other Product Leaders from QASymphony walked through some of the exciting product features and enhancements coming in 2016 during Quality Jam 2016.
A Quick Intro to Agile, DevOps & Lean Development in the EnterpriseTasktop
Agile, DevOps and Lean are common approaches to modern software delivery. But how are they actually being used in large enterprise? What do you need to consider to make your transformation successful? Visit www.tasktop.com for more information.
DOES16 San Francisco - David Blank-Edelman - Lessons Learned from a Parallel ...Gene Kim
Lessons Learned from a Parallel Universe
David N. Blank-Edelman, Technical Evangelist, Apcera
Just within the last ten or so years, we have seen at least two separate communities evolve at the crossroads of development and operations. The first—DevOps—grew up very much in public, the second matured sequestered within the halls of “special” companies like Google and Facebook and is only now starting to gain visibility and traction in the wider world. The DevOps and Site Reliability Engineering (SRE) communities barely speak, yet both have common ancestors and much to offer each other. Let’s look at what they have in common, how they differ, and what are the key things we can learn from both.
DevOps Enterprise Summit San Francisco 2016
The presentation at Agile Tour 2010 Shanghai.
It's about a new Team Model integrates Developers and Testers; a new Lifecycle Model integrates Development and Testing; and a new Development activities driven by Tests.
Integration is at the heart of value stream improvement. In software, your value stream spans different domains and tools, which makes integration unavoidable. You need a seamless flow of information between people and tools to refine your delivery process.
Integration can be complex, but the difficulty is compounded when you cannot see everything that needs to be connected. When you can actually see what’s flowing between systems in a simple, intuitive way, you are well on your way to being able to improve your value stream.
In this webinar we’ll demonstrate how to:
* Create a connected value stream by automating artifact flow across your software development and delivery tools
* Provide value stream visibility to senior leadership with Tasktop’s new Integration Landscape View
* Easily scale and manage integrations with model-based integration management
Big Data Day LA 2015 - How to model anything in Redis by Josiah Carlson of Ze...Data Con LA
Data modeling can be a challenge for any transition to using Redis. Other databases rely on indexes and rich query languages to resolve limitations in your data modeling options, but this doesn't always work with Redis. I will discuss a data modeling technique that I use to solve my volunteer, personal, and professional data modeling challenges.
Welcome to the API Economy: Developing Your API StrategyMuleSoft
View the recording of this webinar: http://www.mulesoft.com/webinars/esb/welcome-api-economy
Learn more about our Anypoint Platform for APIs: https://www.mulesoft.com/platform/api
Gartner predicts 75% of Fortune 500 enterprises will open an API by 2014. In this new API economy, those without an API strategy will be left behind. What does this mean for you and your business? Join Ross Mason, MuleSoft Founder, for a discussion on key API trends and what you can do in this New Enterprise era to unlock competitive advantage for your organization.
Questions discussed:
What has changed with APIs?
What is the API economy and how did we get here?
How are APIs transforming enterprises?
What are key API trends my organization should be planning for?
How can APIs make my business more competitive?
Continuous delivery in larger shops can run into people and technological roadblocks related to complex systems and organizational structures. This presentation looks at some of those challenges and how to overcome them.
Since its beginning, the Performance Advisory Council aims to promote engagement between various experts from around the world, to create relevant, value-added content sharing between members. For Neotys, to strengthen our position as a thought leader in load & performance testing. During this event, 12 participants convened in Chamonix (France) exploring several topics on the minds of today’s performance tester such as DevOps, Shift Left/Right, Test Automation, Blockchain and Artificial Intelligence.
Arthur Hicken Chief Evangelist of Parasoft @ PSQT 2016 discusses:
• What the shift from automated to
continuous means
• How disruption requires changes to how
we test software
• Addressing gaps between Dev and Ops
• Technologies that enable Continuous
Data-Driven DevOps: Improve Velocity and Quality of Software Delivery with Me...Splunk
Much of the value of DevOps comes from a (renewed) focus on measurement, sharing, and continuous feedback loops. In increasingly complex DevOps workflows and environments, and especially in larger, regulated, or more crystallized organizations, these core concepts become even more critical.
This session will show how, by focusing on 'metrics that matter,' you can provide objective, transparent, and meaningful feedback on DevOps processes to all stakeholders. Learn from real-life examples how to use the data generated throughout application delivery to continuously identify, measure, and improve deployment speed, code quality, process efficiency, outsourcing value, security coverage, audit success, customer satisfaction, and business alignment.
How to Build High-Performing IT Teams - Including New Data on IT Performance ...Puppet
Alanna Brown shares how to build the case for DevOops, align incentives and team members, and implement key technical practices, such as version control, configuration management, continuous integration, and monitoring.
Developing and delivering applications in a repeatable way, with the expected quality is a great challenge these days. In order to maximize business value at-the-speed-of-business, initiatives are being driven both by the development or delivery teams and by operations. They each have their own focus and specifics, but in essence they are both centered around: Collaboration and integration, automation, standardization and governance.
Performance Metrics Driven CI/CD - Introduction to Continuous Innovation and ...Mike Villiger
Deck used for my talk at the 2016 Spring User Conference in Toronto. Deck was followed up by a walkthrough of a Jenkins workflow that deployed to Cloud Foundry based on jmeter test results
Innovate Better Through Machine data AnalyticsHal Rottenberg
This talk was presented at IP Expo Manchester in May, 2016. the themes discussed are:
- how does machine data relate to devops?
- how can tracking this data lead to better outcomes?
- what types of data are important to track?
Rsqrd AI: How to Design a Reliable and Reproducible PipelineSanjana Chowdhury
In this talk, David Aronchick, co-founder of Kubeflow and Microsoft's Head of Open Source ML, talks about designing reproducible and reliable ML pipelines. He speaks about the importance and impact of MLOps and use of metadata in pipelines. He also talks about a library he wrote to help with this problem, MLSpecLib.
**These slides are from a talk given at Rsqrd AI. Learn more at rsqrdai.org**
CFD Simulation of By-pass Flow in a HRSG module by R&R Consult.pptxR&R Consult
CFD analysis is incredibly effective at solving mysteries and improving the performance of complex systems!
Here's a great example: At a large natural gas-fired power plant, where they use waste heat to generate steam and energy, they were puzzled that their boiler wasn't producing as much steam as expected.
R&R and Tetra Engineering Group Inc. were asked to solve the issue with reduced steam production.
An inspection had shown that a significant amount of hot flue gas was bypassing the boiler tubes, where the heat was supposed to be transferred.
R&R Consult conducted a CFD analysis, which revealed that 6.3% of the flue gas was bypassing the boiler tubes without transferring heat. The analysis also showed that the flue gas was instead being directed along the sides of the boiler and between the modules that were supposed to capture the heat. This was the cause of the reduced performance.
Based on our results, Tetra Engineering installed covering plates to reduce the bypass flow. This improved the boiler's performance and increased electricity production.
It is always satisfying when we can help solve complex challenges like this. Do your systems also need a check-up or optimization? Give us a call!
Work done in cooperation with James Malloy and David Moelling from Tetra Engineering.
More examples of our work https://www.r-r-consult.dk/en/cases-en/
Cosmetic shop management system project report.pdfKamal Acharya
Buying new cosmetic products is difficult. It can even be scary for those who have sensitive skin and are prone to skin trouble. The information needed to alleviate this problem is on the back of each product, but it's thought to interpret those ingredient lists unless you have a background in chemistry.
Instead of buying and hoping for the best, we can use data science to help us predict which products may be good fits for us. It includes various function programs to do the above mentioned tasks.
Data file handling has been effectively used in the program.
The automated cosmetic shop management system should deal with the automation of general workflow and administration process of the shop. The main processes of the system focus on customer's request where the system is able to search the most appropriate products and deliver it to the customers. It should help the employees to quickly identify the list of cosmetic product that have reached the minimum quantity and also keep a track of expired date for each cosmetic product. It should help the employees to find the rack number in which the product is placed.It is also Faster and more efficient way.
Welcome to WIPAC Monthly the magazine brought to you by the LinkedIn Group Water Industry Process Automation & Control.
In this month's edition, along with this month's industry news to celebrate the 13 years since the group was created we have articles including
A case study of the used of Advanced Process Control at the Wastewater Treatment works at Lleida in Spain
A look back on an article on smart wastewater networks in order to see how the industry has measured up in the interim around the adoption of Digital Transformation in the Water Industry.
Water scarcity is the lack of fresh water resources to meet the standard water demand. There are two type of water scarcity. One is physical. The other is economic water scarcity.
Hybrid optimization of pumped hydro system and solar- Engr. Abdul-Azeez.pdffxintegritypublishin
Advancements in technology unveil a myriad of electrical and electronic breakthroughs geared towards efficiently harnessing limited resources to meet human energy demands. The optimization of hybrid solar PV panels and pumped hydro energy supply systems plays a pivotal role in utilizing natural resources effectively. This initiative not only benefits humanity but also fosters environmental sustainability. The study investigated the design optimization of these hybrid systems, focusing on understanding solar radiation patterns, identifying geographical influences on solar radiation, formulating a mathematical model for system optimization, and determining the optimal configuration of PV panels and pumped hydro storage. Through a comparative analysis approach and eight weeks of data collection, the study addressed key research questions related to solar radiation patterns and optimal system design. The findings highlighted regions with heightened solar radiation levels, showcasing substantial potential for power generation and emphasizing the system's efficiency. Optimizing system design significantly boosted power generation, promoted renewable energy utilization, and enhanced energy storage capacity. The study underscored the benefits of optimizing hybrid solar PV panels and pumped hydro energy supply systems for sustainable energy usage. Optimizing the design of solar PV panels and pumped hydro energy supply systems as examined across diverse climatic conditions in a developing country, not only enhances power generation but also improves the integration of renewable energy sources and boosts energy storage capacities, particularly beneficial for less economically prosperous regions. Additionally, the study provides valuable insights for advancing energy research in economically viable areas. Recommendations included conducting site-specific assessments, utilizing advanced modeling tools, implementing regular maintenance protocols, and enhancing communication among system components.
Final project report on grocery store management system..pdfKamal Acharya
In today’s fast-changing business environment, it’s extremely important to be able to respond to client needs in the most effective and timely manner. If your customers wish to see your business online and have instant access to your products or services.
Online Grocery Store is an e-commerce website, which retails various grocery products. This project allows viewing various products available enables registered users to purchase desired products instantly using Paytm, UPI payment processor (Instant Pay) and also can place order by using Cash on Delivery (Pay Later) option. This project provides an easy access to Administrators and Managers to view orders placed using Pay Later and Instant Pay options.
In order to develop an e-commerce website, a number of Technologies must be studied and understood. These include multi-tiered architecture, server and client-side scripting techniques, implementation technologies, programming language (such as PHP, HTML, CSS, JavaScript) and MySQL relational databases. This is a project with the objective to develop a basic website where a consumer is provided with a shopping cart website and also to know about the technologies used to develop such a website.
This document will discuss each of the underlying technologies to create and implement an e- commerce website.
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Overview of the fundamental roles in Hydropower generation and the components involved in wider Electrical Engineering.
This paper presents the design and construction of hydroelectric dams from the hydrologist’s survey of the valley before construction, all aspects and involved disciplines, fluid dynamics, structural engineering, generation and mains frequency regulation to the very transmission of power through the network in the United Kingdom.
Author: Robbie Edward Sayers
Collaborators and co editors: Charlie Sims and Connor Healey.
(C) 2024 Robbie E. Sayers
Sachpazis:Terzaghi Bearing Capacity Estimation in simple terms with Calculati...Dr.Costas Sachpazis
Terzaghi's soil bearing capacity theory, developed by Karl Terzaghi, is a fundamental principle in geotechnical engineering used to determine the bearing capacity of shallow foundations. This theory provides a method to calculate the ultimate bearing capacity of soil, which is the maximum load per unit area that the soil can support without undergoing shear failure. The Calculation HTML Code included.
6. build the right thing
every business idea is
a hypothesis until you
get user feedback
7. corollary: don’t waste money on the wrong thing
Standish Group: how often features are used
8. constant user connection
by releasing everyday:
your users can be delighted by new stuff all the time
your users get the feeling you are reacting to what they want
9. ability to move quickly
react to the market
explore new revenue streams
10. better aligned people
development & operations close to the business
IT no longer perceived as
the bottleneck
12. time
uh oh
problem happens
wheeew
problem solved
TTR (time to recover)
time to figure
out cause of
problem
time to
fix
problem
>>
adapted from John Allspaw
15. fast, automated feedback on the
production readiness of your
applications every time there is a
change
whether code, infrastructure, configuration or database
Jez Humble
16. continuous delivery
software always production ready
releases tied to business needs, not IT constraints
minimize the lead time from idea to live
concept to cash
time
small feature chunks
17. systems thinking is [a philosophy] based on the
belief that the component parts of a system can best
be understood in the context of relationships with
each other and with other systems, rather than in
isolation.
18. value stream mapping
process tool for improving the flow from a customer request to
the fulfillment (concept to cash)
emphasis is on improving the whole not just the parts
uses quantitative data to identify waste and inefficiency
originally developed by toyota to assist in the improvement of
manufacturing and supply-chain processes
24. full production pipeline
automated implementation of your system’s
build, deploy, test, approval processes
visibility
traceability
compliance
25. treat everything like code
check in, automate, test in CI, promote in deployment pipeline
• database: DDL & static data
• deployment automation
• infrastructure/configuration mgmt
• monitoring configuration
27. adhere to the test pyramid
Adapted from Mike Cohn (Automated Test Pyramid)
and Lisa Crispin & Janet Gregory (Agile Testing)
28. trunk based development
P1
P1 P2
P3
P4
P4
P3 P4 P5
G1
P2
G2
P3 G3
G1 G2 G3 G4
G5 G6
B1 B2
G1
P1
B1
B1
P1-2
G2
G2
P3
B2
B2
G3
G3
P4 P5
P4-5
G4
G4 G5 G6
P2
Professor Plum
Mainline
Reverend Green
branches discourage refactoring
branches delay integration and hide risk
merging wastes time and is tedious
29. trunk based development
feature toggles let you deploy incomplete features
turned off
branch-by-abstraction lets you make architectural
changes
30. consistency from development to production
accidental
inconsistency
necessary
inconsistency
>>
deployment process
environment configuration
testing tools
31. pull itops onto the delivery team
sit together: biz dev, qa & sysadmin
share KPIs for stability and change
same story wall and iterations
32. concerns
reliability & stability
compliance & traceability
releasing 10 times/day
• don’t need to, just keep your code always production releasable
complexity of my systems
• its about continuous improvement. start with low hanging fruit
it will take investment
• yes it will, but it will also start paying dividends fairly quickly
Going to talk about what, why and how
Want you to walk away with good pic of CD
And some ideas & questions for your organization
Aol story
- 2 month release delay to a project
- dev was done on windows, QA and prod were Solaris so deployment slow and error-prone
big impact to delivery: if it takes days or weeks to deploy to qa, that means the feedback from qa is massively delayed
- system we were replacing took a weekend to deploy. That meant several people from ops & dev … missing beautiful, well overcast, weekends in london
- conan the deployer script – started out telling people what to do, then automated the steps
that was great for them and it made a difference to the business being able to execute
Must be a better way … Lunch with vp ops for yahoo. Asked him about purchase of flickr ….
Flickr story
So what are the key characteristics of what flickr (and facebook and other web2.0 companies) are doing …
So what they are doing is pushing very small chunks into production. Changes so small that they release 10 times a day.
So what are the business drivers that led flickr and other web2.0 companies to this approach?
you don’t know if the hypothesis is correct until you run it against real users in production.
flickr started off as a gaming site with a little side feature that allowed people to store and share photos
another company started off making basic interpreters and then discovered the money was in o/s
chances are high that your idea is wrong. every day you spend building it before trialing the more money you are likely wasting
Some companies can afford to build the wrong thing.
Well, maybe they can afford it.
users will want to come back
even if you aren’t solving their particular problem, they can see you improving things all the time
We all live in markets that change incredibly quickly. It is critical to our survival that we can move fast.
Facebook expects every new developer to push code to production their first day on the job. If they can do that, imagine how fast they can react to change.
Beyond moving quickly, Facebook has another desire. They want to ensure their devs are close to the users …
If you are delivering quickly, your dev & ops people are going to need to be side-by-side your business people. They need to be organized by business goals, just like the business people. This aligns their day-in and day-out work to the business, not an abstract IT sub-department. And this allows them to deliver fast. Dev & Ops folks make many business decisions every day, not just technical decisions. If they are close to the business, if they understand the business they can make smarter decisions. You would be shocked how smart techies can be, even in business.
Some people (enterprisey ones) worry that doing this will damage reliability and stability. people depend on our apps to do their jobs, not just to view vacation pictures. this is exactly the objection yahoo raised with flickr. so back to our story. flickr responded with a challenge. let's compare the data on production uptime for the past year on all yahoo properties with flickr. who had the best uptime? turned out that flickr did … why?
if you release every 3 months there is a huge delta and that means large risk
usual reaction is to lock down, add more signoffs and release less frequently
but that is wrong. you should release more frequently for 2 reasons:
1) you have shorter MTTR
Explain pic
2) If something is difficult, do it early and often. Then you will get very good at it.
the only measure of done is live
people talk about 30% done or dev-complete, but it is usually misleading
done, done done, done done done
to everyone in delivery process: dev, tester, dba, sysadmin, ba, etc
from: compilation, unit tests, functional tests, integration tests, performance tests, etc
fast feedback turns out to be the secret. When you achieve that you …
move away from a model where releases go out monthly or quarterly or whatever. To a model where you are constantly delivering value to production from the beginning of the project.
2 beneficial effects of fast, automated feedback
- your software is always production ready. you should be able to press a button and release your software to production at any time
- and crucially, when you press that button, it should be a decision of the business, we shouldn’t be constrained by thinking you have to wait for the next release window in a month. it should be possible for the business to say they want a feature, it gets built in a week or two and then they can push it into production. and this is a big change, a strategic benefit for the business. if you are the business and you see a market opportunity and can react and get something out in a couple weeks, then you have incredible strategic advantage over your competitors.
requires big changes in an organization. so how do we approach this?
So what is the first step?
Show of hands – who here has done a value stream map? This came out of Toyota back in the late 90’s. It can really help an organization look for friction points.
Start by mapping how your organization delivers, who is involved, how do changes get promoted downstream, etc
Collect metrics: lead time, process time, % complete and accurate (how often are stories ready for dev when they get to dev? Bugs found in ready for QA?)
This will tell you where your constraints are in your delivery process. Remember that the reason uat is slow might be because of something done in coding (a completely different step)
Find the bottlenecks, improve them, iterate
This is about continuous improvement. You are never done.
I’m only going to talk about the part from coding to release. Now that might not be the constraint in your process. It might be how you manage requirements and ideas. You should look at your highest priority constraints first.
Let’s assume your constraint is in here (yellow boxes). How do you improve the delivery process.
back to the year 2000. non-techies don’t worry this is the only code quiz in my presentation.
TW’s most important 4 lines of code – what is it?
It says that every 60 seconds check source control for changes and if they exist then build and test
Who here is doing CI?
Who’s doing trunk based development?
Does integrated mean finished?
No we aren’t. There are a lot of things that need to happen before production.
If you look at this pipeline though you will notice a key characteristic. The further to the left you are the faster the feedback. The absolute fastest is a local dev build. Then comes CI.
So we want to move as much stuff from the right to the left as possible. That will give us the best fast feedback.
And we want to make moving through the pipeline as frictionless as possible so that we can do it as quickly as possible. So we will want to automate the pipeline as much as possible …
this gives you: you know who did what, when, where and why. from requirements to dev to test to production.
you can see for every checkin which stage of the delivery process it passed: compile, package, publish, unit, smoke, regression,
you can see what other components it integrates with and depends on
you can see for all changes: code, db, config, infra, whether it breaks something
operations people can see what is coming down the pipeline
testers can see what is ready to deploy
So what are key practices that support this:
Database migrations
Infrastructure as code
Automated monitoring
naming machines as an antipattern
do nothing manually. use automation to ensure they are identical
even logging into a server is an antipattern
consider phoenix server concept – never maintain, just redeploy
This slide may start a holy war …
Hands up if you do CI (keep hands up)
Put your hands down if you don’t check into mainline at least once a day
Put your hands down if you use feature branches that aren’t merged into mainline daily
One company, the first task in a story always was to create a flag to turn off functionality
Remember to delete flags!!!!
While keeping systems releasable the whole time!!!!
We deployed this morning with one of our more Enterprise clients. They’re actually getting better, but they’re not done with their CD journey yet. The deploy was at 4 AM – my alarm went off at 3. And one of the first things we said as we dialed in was “I wonder what the surprise will be!” – because production isn’t the same as staging by a long shot.
DevOps is a hot topic these days. We think its more of a culture, a set of principles than a methodology – but its important. You can start really easily by getting your dev team to invite the ops team to lunch.