Atmosphere 2016 - Andreas Grabner - Metrics Driven-DevOps: Delivering High Quality Software like Facebook & Co
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Becoming the next Uber is only possible when bringing your ideas faster to your end users. Some aspects of DevOps are perfect for that as it only works if Ops and Dev work closely together. But what does this mean for you as a developers? Delivering code faster with the high chance of failing faster? In my opinion we need to look at Key Technical Metrics such as Memory Usage per User or Request, # of SQLs, # of Service Calls, Transferred Bytes, ... - these are metrics you need to track starting at your workstation all the way through CI into Ops – and don’t forget the Business: How often is the new feature really used? What does it cost to run it? Let these metrics act as Quality Gateways and stop builds early before they Crash your System: faster than ever. In this session we look at how companies like Facebook, CreditOne and Co apply metric-driven DevOps. We look at use cases that crashed rapid deployments, identify metrics that identify the reason of the crash and learn how to use these metrics to steer your pipeline to build better code, deploy faster, without failing faster!
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Atmosphere 2016 - Andreas Grabner - Metrics Driven-DevOps: Delivering High Quality Software like Facebook & Co
- 1. Metrics-Driven DevOps Deliverying High Quality Software Like Facebook & Co Andreas Grabner, @grabnerandi, blog.dynatrace.com, http://bit.ly/dtpersonal
- 4. Availability dropped to 0% Metrics-Based Decisions
- 5. Update of Dependency Injection Library impacts Memory & CPU
- 6. Object Churning impacting GC and eating CPU!
- 7. App with Regular Load supported by 10 Containers Twice the Load but 48 (=4.8x!) Containers! App doesn’t scale!! Does it really scale?
- 8. Infrastructure, Container, Cloud ... Metrics!!
- 9. #1: Where do people come from? #2: Who are they?
- 10. Daily Deployments + Mkt Push Increase # of unhappy users! Drop in Conversion Rate Overall increase of Users!
- 11. Satisfied Users Click more Content
- 12. Tolerating Users click less content
- 13. Frustrated Users mainly click on Support
- 15. AND MANY MORE
- 17. Vatican, 2005
- 18. Vatican, 2013
- 20. The Promise of Confidential, Dynatrace, LLC
- 23. Boston Feb 2015! After #3 of 7 Blizzards! Total: 2.10m Snow!
- 24. Smart Roofs Alert BEFORE It is too late!
- 27. What they really want! Confidential, Dynatrace, LLC
- 30. 700 deployments / YEAR 10 + deployments / DAY 50 – 60 deployments / DAY Every 11.6 SECONDS
- 31. Not only fast delivered but also delivering fast! -1000ms +2% Response Time Conversions -1000ms +10% +100ms -1%
- 32. Why most (will) fail! Confidential, Dynatrace, LLC
- 34. It‘s not about blindly giving everyone Ops power to deploy changes only tested locally
- 35. It‘s not about blind automation of pushing more bad code on new stacks through a pipeline
- 36. It‘s not about blindly adding new features on top of existing withouth measuring its success
- 40. 282! Objects on that page9.68MB Page Size 8.8s Page Load Time Most objects are images delivered from your main domain Very long Connect time (1.8s) to your CDN „DevOps Deployment“ Example #1: Online Casino
- 41. Example #2: Online Sports Club Search Service 2015201420xx Response Time 2016+ 1) Started as a small project 2) Slowly growing user base 3) Expanding to new markets – 1st performance degradation! 4) Adding more markets – performance becomes a business impact Users 4) Potentially start loosing users
- 42. Early 2015: Monolithic App Can‘t scale vertically endlessly! 2.68s Load Time 94.09% CPU Bound
- 43. Proposal: Service approach! Front End to Cloud Scale Backend in Containers!
- 44. 7:00 a.m. Low Load and Service running on minimum redundancy 12:00 p.m. Scaled up service during peak load with failover of problematic node 7:00 p.m. Scaled down again to lower load and move to different geo location Testing the Backend Service alone scales well …
- 45. Go live – 7:00 a.m.
- 46. Go live – 12:00 p.m.
- 47. What Went Wrong?
- 48. 26.7s Load Time 5kB Payload 33! Service Calls 99kB - 3kB for each call! 171!Total SQL Count Architecture Violation Direct access to DB from frontend service Single search query end-to-end
- 49. The fixed end-to-end use case “Re-architect” vs. “Migrate” to Service-Orientation 2.5s (vs 26.7) 5kB Payload 1! (vs 33!) Service Call 5kB (vs 99) Payload! 3!(vs 177) Total SQL Count
- 51. You measure it! from Dev (to) Ops
- 52. Build 17 testNewsAlert OK testSearch OK Build # Use Case Stat # API Calls # SQL Payload CPU 1 5 2kb 70ms 1 3 5kb 120ms Use Case Tests and Monitors Service & App Metrics Build 26 testNewsAlert OK testSearch OK Build 25 testNewsAlert OK testSearch OK 1 4 1kb 60ms 34 171 104kb 550ms Ops #ServInst Usage RT 1 0.5% 7.2s 1 63% 5.2s 1 4 1kb 60ms 2 3 10kb 150ms 1 0.6% 4.2s 5 75% 2.5s Build 35 testNewsAlert - testSearch OK - - - - 2 3 10kb 150ms - - - 8 80% 2.0s Metrics from and for Dev(to)Ops Re-architecture into „Services“ + Performance Fixes Scenario: Monolithic App with 2 Key Features
- 53. #1: Don’t Check In Bad Code Step #1: Execute your Tests just as you always do ... Step #2: ... but CAPTURE Metrics!! Step #3: Verify Code works as intended – including your frameworks!
- 54. #1: Analyzing every Unit, Integration & REST API test #2: Key Architectural Metrics for each test #3: Detecting regression based on measure per Checkin #2: Stop Bad Builds in CI
- 55. #3: Monitor your Services/Users in Prod #1: Usage Tip: UEM Conversion! #2: Load vs Response Tip: See unusual spikes #3: Architectural Metrics DB, Exceptions, Web Service Calls
- 56. #4: Metrics per Service in Ops # SQLs per Search # RESTs per Search Spot bad Deployment? Payload per Search
- 57. #1: Do my campaigns work? #2: Who are my users? #5: Understand your End Users
- 58. #6: Optimize End User Behavior#1: Are they using the features we built? #2: Is there a difference between Premium and Normal users? #3: Does Performance have a Behavior Impact?
- 59. Dev&Test: Personal License to Stop Bad Code when it gets created! Tip: Dont leave your IDE! Continuous Integration: Auto-Stop Bad Builds based on AppMetrics from Unit-, Integration, - Perf Tests Tip: integrate with Jenkins, Bamboo ... Prod: Monitor Usage and Runtime Behavior per Service, User Action, Feature ... Tip: Stream to ELK, Splunk and Co ... Automated Tests: Identify Non-Functional Problems by looking at App Metrics Tip: Feed data back into your test tool! Build & Deliver Apps like the Unicorns! With a Metrics-Driven Pipeline!
- 60. 12:00 a.m – 11:59 p.m.
- 61. Questions Slides: slideshare.net/grabnerandi Get Tools: bit.ly/dtpersonal YouTube Tutorials: bit.ly/dttutorials Contact Me: agrabner@dynatrace.com Follow Me: @grabnerandi Read More: blog.dynatrace.com
- 62. Andreas Grabner Dynatrace Developer Advocate @grabnerandi http://blog.dynatrace.com
- 64. Adam Auerbach @bugman31 “All-in Agile: across the pipeline” “We don’t log bugs, we fix them!” “Measure Built-Into your Pipeline” “All manual testers: automate!” LEARN MORE: READ DYNATRACE BLOG FROM VELOCITY 2015
- 65. Technical Debt Business Debt Organizational Rust Nita Awatramani 45% Apps Eliminated 60% DCs Consolidated 75% Virtualized 8M$ Ann. Costs Slashed 100% Verizon Agile LEARN MORE: PERFORM 2015 VIDEO + UPCOMING WEBINAR!
Editor's Notes
- Synthetic Availability Monitoring -> Clearly something went wrong
- Even if the deployment seemed good because all features work and response time is the same as before. If your resource consumption goes up like this the deployment is NOT GOOD. As you are now paying a lot of money for that extra compute power
- Monitor your end users after you deployed something
- Monitoring user experience and impact on conversion rate
- Another cool example of conversion rate compared to technical metrics
- Yes – I am working for a tool vendor – BUT – you can try this with most of the tools in the APM, Tracing, Diagnostics space out there.
- We all know that since then the world got divided into two big parties. So – just out of curiosity: who is using Apple vs Android? And who is using Windows?
- The phones not only changed the way we communicate – it disrupted many other technologies as well. Look at this! Pope Election in 2005. A SINGLE hand up with an old phone taking a picture
- In 2013 the „picture“ is totally different. The smart phones and tablets not only changing the way we communicate but also disrupting many other things such as taking pictures, getting light when you need one (torchlight), measuring your steps, ...
- So – just to see the difference again in one picture!
- Why are people so crazy about DevOps?
- Because new innovative companies are disrupting existing markets by delivering better services faster
- Annd IoT will show us a lot of new markets and we will see a lot of new companies that deliver new services for new use cases
- This is Boston February 2015!
- We know that everyone these days can build a globally successful business with just an idea and a laptop. Such as Mark Z or the two tech brothers (12 & 14) founders of GoDimensions. They develop 12 Apps so far with more than 35k downloads. Their idol? Steve Jobs!
- Just to get the basics covered: I hope everyone has their own definition of DevOps by now. It is a lot of things depending on whom to list to our which blogs you follow.
- In case you are a “DevOps Virgin” I definitely recommend checking out The Phoenix Project (the DevOps Bible) and Continuous Delivery (which is what we actually all want to achieve): Deliverying software faster with great quality and without all potential mistakes that a manual and rigid process brings with it
- They really follow the stories of the first generation Unicorn Companies
- Several companies changed their way they develop and deploy software over the years. Here are some examples (numbers from 2011 – 2014) Cars: from 2 deployments to 700 Flicks: 10+ per Day Etsy: lets every new employee on their first day of employment make a code change and push it through the pipeline in production: THAT’S the right approach towards required culture change Amazon: every 11.6s Remember: these are very small changes – which is also a key goal of continuous delivery. The smaller the change the easier it is to deploy, the less risk it has, the easier it is to test and the easier is it to take it out in case it has a problem.
- But it is not only about delivering features faster – it is also about delivering fast features! These stats come from here: http://nft.atcyber.com/infographics/infographic-the-importance-of-web-performance-20140913
- But don’t make the mistake to blindly follow every unicorn out there Taken from http://www.hostingadvice.com/blog/cloud-66-devops-as-a-service/
- Its not about giving Devs Direct Access to Ops Deployments
- Because this is what might happen: If „Being DevOps“ just means you just increase the number of deployments then you are bound to fail. Here is an example of a bad web application. When deploying this more frequently you will end up in more war rooms
- They had a monolithic app that couldnt scale endlessly. Their popularity caused them to think about re-architecture and allowing developers to make faster changes to their code. The were moving towards a Service Approach
- Separating frontend logic from backend (search service). The idea was to also host these services potentially in the public cloud (frontend) and in a dynamic virtual enviornment (backend) to be able to scale better globally
- The Backend Search Service Team did a lot of testing on their backend services. Scaling up and down on demand. All looked pretty good! They gave it a Thumbs Up!
- On Go Live Date with the new architecture everything looked good at 7AM where not many folks were yet online!
- By noon – when the real traffic started to come in the picture was completely different. User Experience across the globe was bad. Response Time jumped from 2.5 to 25s and bounce rate trippled from 20% to 60%
- The backend service itself was well tested. The problem was that they never looked at what happens under load „end-to-end“. Turned out that the frontend had direct access to the database to execute the initial query when somebody executed a search. The returned list of search result IDs was then iterated over in a loop. For every element a „Micro“ Service call was made to the backend which resulted in 33! Service Invokations for this particular use case where the search result returned 33 items. Lots of wasted traffic and resources as these Key Architectural Metrics show us
- They fixed the problem by understanding the end-to-end use cases and then defined backend service APIs that provided the data they really needed by the frontend. This reduced roundtrips, elimiated the architectural regression and improved performance and scalability
- Lessons Learned!
- If we monitor these key metrics in dev and in ops we can make much better decisions on which builds to deploy We immediately detect bad changes and fix them. We will stop builds from making it into Production in case these metrics tell us that something is wrong. We can also take features out that nobody uses if we have usage insights for our services. Like in this case we monitor % of Visitors using a certain feature. If a feature is never used – even when we spent time to improve performance – it is about time to take this feature out. This removes code that nobody needs and therefore reduces technical debt: less code to maintain – less tests to maintain – less bugs in the system!
- And this is how it looks like with Dynatrace AppMon Test Automation Feature. We automatically montior every single test execution in your CI and analyze these metrics per Test and per Build. We automatically detect regressions as every metrics per Test will be baselined. This allows us to STOP A BUILD before it moves to other phases in the pipeline
- In Production we monitor the same metrics for our services. Seeing if a recent deployment had any change in # of SQL calls for a particular feature or the # of internal Service Calls. Helps us to make sure that we do not make bad deployments – or at least be aware of it right away to take countermeasures, e.g: rollback or fix
- With that we can make our users happy 24/7 – at any load
- Good news is that we have stories about the next generation Unicorns – Make sure you learn about how these companies transferred there business
- Read the full story on my blog: http://apmblog.dynatrace.com/2015/05/29/velocity-2015-highlights-from-last-day/ Adam Auerbach from Capital One at Star West 2015 and Velocity 2015 Not a small software startup -> but an established financial company that transformed the way they develop and especially „Continuously Test“ Software!
- Watch the full Verizon story from our PERFORM 2015 Recordings There is also going to be webinar in June where Nita goes into more details