IEEE ISSRE 2018 - Use of Self-Healing Techniques to Improve the Reliability of a Dynamic and Geo-Distributed Ad Delivery Service
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The document discusses the implementation of self-healing techniques in Adobe's advertising cloud to enhance the reliability and performance of its ad delivery service. It addresses challenges such as high latency, origin failures, and the limitations of traditional geolocation methods for content delivery. A solution involving smart edges and automated failover is proposed to improve latency and service availability.
IEEE ISSRE 2018 - Use of Self-Healing Techniques to Improve the Reliability of a Dynamic and Geo-Distributed Ad Delivery Service
- 1. © 2018 Adobe Systems Incorporated. All Rights Reserved. Adobe Confidential. Use of Self-Healing Techniques to Improve the Reliability of a Dynamic and Geo-Distributed Ad Delivery Service Nicolas Brousse and Oleksii Mykhailov
- 2. © 2018 Adobe Systems Incorporated. All Rights Reserved. Adobe Confidential. Adobe Advertising Cloud Serving All Media Content Across Any Screens in Any Format 2
- 3. © 2018 Adobe Systems Incorporated. All Rights Reserved. Adobe Confidential. 3 BEFORE RFP, IO, human based orders NOW Programmatic Ad Buying with Real Time Bidding
- 4. © 2018 Adobe Systems Incorporated. All Rights Reserved. Adobe Confidential. 4 Latency <50ms @ 95th percentile High Traffic 300 billion requests a day Huge Datasets Billions of objects to store
- 5. © 2018 Adobe Systems Incorporated. All Rights Reserved. Adobe Confidential. 5 Ad Content Delivered To Eyeball
- 6. © 2018 Adobe Systems Incorporated. All Rights Reserved. Adobe Confidential. 6 Traditional Ad Serving Implement GeoDNS GSLB
- 7. © 2018 Adobe Systems Incorporated. All Rights Reserved. Adobe Confidential. Inconsistent GeoDNS Routing High Latency From Eyeball To Content Origin Origin Failure Impact User Experience Impact Campaign Performance and Revenue 7
- 8. © 2018 Adobe Systems Incorporated. All Rights Reserved. Adobe Confidential. Relying on GeoDNS to Figure Out Eyeball Location is UNRELIABLE 8 Optimal Route Actual Route
- 9. © 2018 Adobe Systems Incorporated. All Rights Reserved. Adobe Confidential. 9 TCP and TLS Handshake Impact Latency
- 10. © 2018 Adobe Systems Incorporated. All Rights Reserved. Adobe Confidential. Datacenter Blackout Network Outage Human Errors Natural Disaster 10 High Risks Of Origin Failures
- 11. © 2018 Adobe Systems Incorporated. All Rights Reserved. Adobe Confidential. Service Unavailability 11
- 12. © 2018 Adobe Systems Incorporated. All Rights Reserved. Adobe Confidential. 12 SOLUTION Eyeball Traffic Access Content via Smart Edges
- 13. © 2018 Adobe Systems Incorporated. All Rights Reserved. Adobe Confidential. 13 Smart Edges Are Anycast POPs That Manage Failover and Self-Healing
- 14. © 2018 Adobe Systems Incorporated. All Rights Reserved. Adobe Confidential. 14 Few Words About Anycast § Shortest Path Routing Means § Not Latency Aware § Not Congestion Aware / Packet Loss § Limited Control for Traffic Steering § Difficult Troubleshooting § Failover lead to packet RST for Active Sessions § Mitigation with a large and well distributed number of POPs
- 15. © 2018 Adobe Systems Incorporated. All Rights Reserved. Adobe Confidential. 15 Anycast POP Improve Latency e.g. 3X Faster
- 16. © 2018 Adobe Systems Incorporated. All Rights Reserved. Adobe Confidential. 16 Automate Failover and Recovery
- 17. © 2018 Adobe Systems Incorporated. All Rights Reserved. Adobe Confidential. 17 Inject Failures In Production To Validate Smart Edges Behavior
- 18. © 2018 Adobe Systems Incorporated. All Rights Reserved. Adobe Confidential. Human Failover vs Self-Healing 18 > 1h Failure < 15min < 30min Region Traffic Rerouted Self Recover Note: since the paper publication, we reduced automated failover time to be less than a few seconds. See demo. Fig. 1 Human Failover with Manual Recovery steps Fig. 2 Automated Failover and Self-Healing Recovery
- 19. © 2018 Adobe Systems Incorporated. All Rights Reserved. Adobe Confidential. 19 Injecting Complete Data Center Failure at the Regional Level LIVE
- 20. © 2018 Adobe Systems Incorporated. All Rights Reserved. Adobe Confidential. Recorded Demo 20