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The View from the Peak of Inflated
Expectations
Saul Caganoff
CTO, Sixtree
@scaganoff
Melbourne
Microservices
Meetup
The 2015 Hype Cycle
§ Get awayfrom the “Big Ball of Mud”
§ To go faster
§ Scale Better
§ Infinite scalability (bewarescale envy)
§ Differential scalability
§ Organizing & scaling teams
§ Open up new capabilities
§ Evolutionary architectures
§ Try new ideas
Core Tenets: Culture Architecture Automation
§ Depending on: Somebody else
§ siloed teams: front-ends, back-ends, QA, operations
§ Shared infrastructure
§ Shared database creates schema dependencies
§ Shared architecture layers – message queues & orchestration
§ Other people’s services
§ Shared code – shared libraries, packages,dependency
management
§ Expert knowledge – no-one understands the whole system
§ Permission – centralised governance
§ Small Cross-FunctionalTeams – give the team all they need to
deliver business value – two pizza rule
§ Vertical partitioning – partition systems along vertical lines –
eschew the horizontally layered architecture
§ Keep services small – so they fit in your head
§ Self-contained code – “a single unix process” (but containers)
§ Loose coupling – choreography vs orchestration
§ Standardiseat the interfaces – governance only where its
needed
Result:Ownership & Autonomy
§ Collaboration
§ Shared Responsibility
§ Autonomy
§ Quality
§ Feedback
§ Automation
§ Small Teams
§ Segmented on business domain,not technology
§ Cross-functional
§ Autonomous
§ No hand-offs,no blame-shifting
Domain SYSTEM ORGANIZATION
Domain SYSTEM ORGANIZATION
Finance
Sales
Fulfilment
Product
§ Bounded Contexts are areas of
cohesion in your domain model
§ Boundaries appear where domain
concepts “break”
§ Bounded Contexts are the
handle for organizing your
§ Application
§ Teams
§ Runtime services
§ Understand your application’s Bounded Contexts
§ Carve off a small domain (ideallynon-transactional)
§ Run as microservices
§ Autonomy
§ Choreography with rest of the monolith
§ Automation: CI/CD
§ Iterate
DON’T
§ Still understand your application’s Bounded Contexts
§ But carving up a monolith addscomplexity – Stefan Tilkov
§ Security
§ Data Integration & Duplication
§ Monitoring
§ Deployment & Management
§ Service Registration &
Discovery
§ Developer Tooling
§ Partitioning
§ (No) Transactions
§ Reporting
§ Data Migration
§ Protocols & Standards
§ Distributed Tracing & Error
Handling
§ Failure & Resiliency
§ Standardiseall the Interfaces
§ Standard API:REST (ish) or RPC – use a contract!
§ Configuration:Environment Variables
§ Logging:common format to stdout/stderr
§ Monitoring endpoints: /stats or /health
§ Events: publish standard event structures
§ Configuration:
environment management
§ Log correlation & tracing:
§ Shipping and
storage/analytics
§ Dapper & Zipkin
§ Monitoring:
§ Infrastructure monitoring is
not enough
§ End-user experience
§ Synthetic transactions
§ Event processing:
§ Choreography, CQRS for
reporting
§ Service registration &
discovery:
§ Load-balancing, failover
§ Orchestration:
§ Canary deployments
§ Blue/Green Deployments
§ Testing:
§ Continuous integration
§ Consumer-Driven Contracts
§ Resilience:
§ Bulkheads
§ Circuit Breakers
§ Partial Failure
§ Anti-fragility:extremely difficult to test for emergent
behaviours
§ Failure Injection
§ Simian Army
§ All inclusive or
§ Assemble your own ”best of breed”
Build Test Package
Docker
Build
Docker
Registry
Ansible
Deploy
K8s
Schedule
K8s Run Docker Pull
K8s
Orchestrate
§ Dozens of Services
§ Project setup
§ Build & Test
§ Artefacts
§ Deployment
§ CI and CD are important pre-requisites for microservices
§ Microservices architecture adoption is growing
§ Be judicious in deciding if it’s right for you
§ Architecture maturity
§ DevOps and automation
§ Team size
§ Infrastructure will become easier and more common
§ Culture is the harder thing to change
§ Microservices might just be the new de facto cloud-native
architecture ?
§ And what about serverless?
§ http://martinfowler.com/microservices/
§ http://microservices.io/patterns/
§ https://www.infoq.com/news/2015/06/monolith-vs-microservices
§ https://eng.uber.com/soa/
§ https://yow.eventer.com/yow-2014-1222/the-odyssey-from-
monoliths-to-microservices-at-realestate-com-au-by-beth-skurrie-
and-evan-bottcher-and-jon-eaves-1751
§ https://github.com/realestate-com-au/pact
§ https://www.youtube.com/channel/UCeRQROVrFDzKNq4e02ko4c
w
§ http://www.meetup.com/Melbourne-Microservices/

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Microservices: The View from the Peak of Expectations

  • 1. The View from the Peak of Inflated Expectations Saul Caganoff CTO, Sixtree @scaganoff Melbourne Microservices Meetup
  • 2.
  • 4. § Get awayfrom the “Big Ball of Mud” § To go faster § Scale Better § Infinite scalability (bewarescale envy) § Differential scalability § Organizing & scaling teams § Open up new capabilities § Evolutionary architectures § Try new ideas Core Tenets: Culture Architecture Automation
  • 5. § Depending on: Somebody else § siloed teams: front-ends, back-ends, QA, operations § Shared infrastructure § Shared database creates schema dependencies § Shared architecture layers – message queues & orchestration § Other people’s services § Shared code – shared libraries, packages,dependency management § Expert knowledge – no-one understands the whole system § Permission – centralised governance
  • 6. § Small Cross-FunctionalTeams – give the team all they need to deliver business value – two pizza rule § Vertical partitioning – partition systems along vertical lines – eschew the horizontally layered architecture § Keep services small – so they fit in your head § Self-contained code – “a single unix process” (but containers) § Loose coupling – choreography vs orchestration § Standardiseat the interfaces – governance only where its needed Result:Ownership & Autonomy
  • 7.
  • 8. § Collaboration § Shared Responsibility § Autonomy § Quality § Feedback § Automation § Small Teams § Segmented on business domain,not technology § Cross-functional § Autonomous § No hand-offs,no blame-shifting
  • 11.
  • 12. Finance Sales Fulfilment Product § Bounded Contexts are areas of cohesion in your domain model § Boundaries appear where domain concepts “break” § Bounded Contexts are the handle for organizing your § Application § Teams § Runtime services
  • 13. § Understand your application’s Bounded Contexts § Carve off a small domain (ideallynon-transactional) § Run as microservices § Autonomy § Choreography with rest of the monolith § Automation: CI/CD § Iterate DON’T § Still understand your application’s Bounded Contexts § But carving up a monolith addscomplexity – Stefan Tilkov
  • 14. § Security § Data Integration & Duplication § Monitoring § Deployment & Management § Service Registration & Discovery § Developer Tooling § Partitioning § (No) Transactions § Reporting § Data Migration § Protocols & Standards § Distributed Tracing & Error Handling § Failure & Resiliency
  • 15.
  • 16. § Standardiseall the Interfaces § Standard API:REST (ish) or RPC – use a contract! § Configuration:Environment Variables § Logging:common format to stdout/stderr § Monitoring endpoints: /stats or /health § Events: publish standard event structures
  • 17. § Configuration: environment management § Log correlation & tracing: § Shipping and storage/analytics § Dapper & Zipkin § Monitoring: § Infrastructure monitoring is not enough § End-user experience § Synthetic transactions § Event processing: § Choreography, CQRS for reporting § Service registration & discovery: § Load-balancing, failover § Orchestration: § Canary deployments § Blue/Green Deployments
  • 18. § Testing: § Continuous integration § Consumer-Driven Contracts § Resilience: § Bulkheads § Circuit Breakers § Partial Failure § Anti-fragility:extremely difficult to test for emergent behaviours § Failure Injection § Simian Army
  • 19.
  • 20.
  • 21. § All inclusive or § Assemble your own ”best of breed”
  • 22.
  • 23. Build Test Package Docker Build Docker Registry Ansible Deploy K8s Schedule K8s Run Docker Pull K8s Orchestrate § Dozens of Services § Project setup § Build & Test § Artefacts § Deployment § CI and CD are important pre-requisites for microservices
  • 24. § Microservices architecture adoption is growing § Be judicious in deciding if it’s right for you § Architecture maturity § DevOps and automation § Team size § Infrastructure will become easier and more common § Culture is the harder thing to change § Microservices might just be the new de facto cloud-native architecture ? § And what about serverless?
  • 25. § http://martinfowler.com/microservices/ § http://microservices.io/patterns/ § https://www.infoq.com/news/2015/06/monolith-vs-microservices § https://eng.uber.com/soa/ § https://yow.eventer.com/yow-2014-1222/the-odyssey-from- monoliths-to-microservices-at-realestate-com-au-by-beth-skurrie- and-evan-bottcher-and-jon-eaves-1751 § https://github.com/realestate-com-au/pact § https://www.youtube.com/channel/UCeRQROVrFDzKNq4e02ko4c w § http://www.meetup.com/Melbourne-Microservices/