SpringOne Tour: Doing Progressive Delivery with your Team
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Date: May 2023 Speaker: Developer Advocate, VMware
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SpringOne Tour: Doing Progressive Delivery with your Team
- 2. Doing Progressive Delivery with Your Team @capileigh stealthybox
- 3. Traffic Shifting Safer Deployments Experimentation - A/B Testing - Blue/Green techniques - User Segmentation - Traffic Mirroring @capileigh stealthybox Progressive Delivery
- 4. Instrument Your Applications - R.E.D. Method ( Rates / Errors / Duration ) - Many service-meshes and ingress-controllers auto-expose RED via Prometheus Flagger can integrate directly /w these metrics @capileigh stealthybox Pre-req:
- 5. Continuous Delivery Zero-Downtime Deployments @capileigh stealthybox Pre-req:
- 6. @capileigh Tech doesn’t solve problems without People Engineering + Product reviewing metrics Optional communication to Stakeholder for promoting a Canary Team Review of key release risks and struggles stealthybox Decision Making
- 7. Traffic Shifting Good for infrequently hit, read-workloads Header Matching / User Indication Client can flag if a User has “joined the beta program” User Segmentation ( ex: device-type or browser User Agent ) A/B Testing Traffic Sampling, Replay, and Mirroring @capileigh stealthybox Feature Gate Strategy
- 8. General migration strategy for breaking changes to load-bearing interfaces. ( Classes, Database Schema, API’s, etc. ) Expand Migrate Contract @capileigh stealthybox Parallel Change
- 9. Basic Site Reliability Engineering (SRE) @capileigh stealthybox
- 10. How do I even do SRE @capileigh stealthybox
- 11. How do I even do SRE Why? @capileigh stealthybox
- 12. Progressive Delivery allows you to sample real traffic and measure your mutations ( you need metrics retention ) @capileigh stealthybox
- 13. SLI INDICATOR This is a metric -- typically quantifiable in an automated manner SLO OBJECTIVE SLA AGREEMENT This is an enforceable contract Between the Service Provider and the Consumer Consumer could be internal or external Often Formal + Culturally or Legally binding @capileigh stealthybox SRE Jargon -- Service Levels
- 15. “How to Feature Gate” - Describe Policies for Canaries - Durations - Metrics Thresholds - Weighted Routing - Good for infrequently hit routes - Feature persistence can combine with upstream sticky sessions - Header matching - Pre-rollout / Rollout hooks @capileigh stealthybox Flagger capabilities
- 16. RED Metrics Flagger Feature-Gate Strategy Decision Making Approach @capileigh stealthybox Progressive Delivery:
- 17. RED /w metrics retention enables: Monitoring SLI's Setting SLO's Keeping SLA's This supports solving problems with Progressive Delivery @capileigh stealthybox SRE: