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Code to Current Account

mattheath
June 12, 2017
Programming
3
300

Code to Current Account

Presented with Simon Vans-Colina at Hashidays London

mattheath

June 12, 2017
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Transcript

  1. Code to 

    Current Account
    @simonvc & @mattheath

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  2. @simonvc @mattheath

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  3. @simonvc @mattheath

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  4. View Slide

  5. View Slide

  6. View Slide

  7. View Slide

  8. View Slide

  9. Legacy banks

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  10. Number of banks running entirely* free* software.

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  11. Number of banks running entirely* free* software.

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  12. Rebuild everything
    * Go microservices
    * Git as Change management
    * Realtime and API

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  13. Go ❤
    * Emphasis on

    correctness
    * Performant
    * Lean

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  14. "Plan to throw your first one away."
    Mesos -> Kubernetes
    RabbitMQ -> LinkerD
    Cloud Formation -> Terraform

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  15. View Slide

  16. Terraform

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  17. View Slide

  18. View Slide

  19. github.com/hashicorp/vault/
    pull/2241
    Cassandra storage backend

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  20. Builds

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  21. View Slide

  22. View Slide

  23. View Slide

  24. 0
    40
    80
    160
    120
    Feb
    2015
    June
    2017
    200
    Number of services
    240

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  25. View Slide

  26. View Slide

  27. View Slide

  28. Service
    Service

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  29. Service
    Service Service
    Service

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  30. Service
    Service Service
    Service
    HTTP
    HTTP

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  31. Service Discovery
    Load Balancing
    Timeouts and Expirations
    Retries
    Rate Limiting
    Connection Pooling
    Circuit Breaking
    Failure Detection
    Metrics and Tracing
    Interrupts
    Context Propagation

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  32. Service
    Service Service
    Service
    HTTP
    HTTP
    ?

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  33. Service
    Service Service
    Service
    HTTP
    HTTP
    linkerd

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  34. Service
    Service Service
    Service
    HTTP
    HTTP
    linkerd
    service
    discovery

    View Slide

  35. Service Discovery
    Load Balancing
    Timeouts and Expirations
    Retries
    Rate Limiting
    Connection Pooling
    Circuit Breaking
    Failure Detection
    Metrics and Tracing
    Interrupts
    Context Propagation

    View Slide

  36. Service
    Service Service
    Service
    HTTP
    HTTP
    linkerd
    service
    discovery

    View Slide

  37. Service
    Service Service
    Service
    Service
    linkerd
    host A
    Service

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  38. Service
    Service Service
    Service
    linkerd
    host B
    Service Service
    Service
    Service Service
    Service
    Service
    linkerd
    host A
    Service
    Service
    Service Service
    Service
    Service
    linkerd
    host C
    Service

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  39. Service
    Service Service
    Service
    linkerd
    host B
    Service Service
    Service
    Service Service
    Service
    Service
    linkerd
    host A
    Service
    Service
    Service Service
    Service
    Service
    linkerd
    host C
    Service

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  40. Service
    Service Service
    Service
    linkerd
    host B
    Service Service
    Service
    Service Service
    Service
    Service
    linkerd
    host A
    Service
    Service
    Service Service
    Service
    Service
    linkerd
    host C
    Service

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  41. Service
    Service Service
    Service
    linkerd
    host B
    Service Service
    Service
    Service Service
    Service
    Service
    linkerd
    host A
    Service
    Service
    Service Service
    Service
    Service
    linkerd
    host C
    Service

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  42. Service
    Service Service
    Service
    linkerd
    host B
    Service Service
    Service
    Service Service
    Service
    Service
    linkerd
    host A
    Service
    Service
    Service Service
    Service
    Service
    linkerd
    host C
    Service

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  43. View Slide

  44. Amazon 

    eu-west-1

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  45. Amazon 

    eu-west-1

    View Slide

  46. View Slide

  47. Amazon 

    eu-west-1
    colocation

    dc 1
    colocation

    dc 2

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  48. Amazon 

    eu-west-1
    colocation

    dc 1
    colocation

    dc 2

    View Slide

  49. Amazon 

    eu-west-1
    colocation

    dc 1
    colocation

    dc 2

    View Slide

  50. Amazon 

    eu-west-1
    colocation

    dc 1
    colocation

    dc 2
    BGP
    BGP
    BGP
    BGP

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  51. Amazon 

    eu-west-1
    colocation

    dc 1
    colocation

    dc 2

    BGP
    BGP

    View Slide

  52. Amazon 

    eu-west-1
    colocation

    dc 1
    colocation

    dc 2


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  53. third parties
    colocation
    AWS
    Hardware

    VPN device

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  54. third parties
    colocation
    AWS
    Hardware

    VPN device
    VPN client

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  55. third parties
    colocation
    AWS
    “connectivity” pod
    Quagga
    (BGP)
    services
    Hardware

    VPN device
    VPN client

    BGP

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  56. third parties
    colocation
    AWS
    “connectivity” pod
    Quagga
    (BGP)
    services ??????
    VPN client

    BGP

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  57. View Slide

  58. third parties
    colocation
    AWS
    “connectivity” pod
    Quagga
    (BGP)
    services ??????
    VPN client

    BGP

    View Slide

  59. third parties
    colocation
    “connectivity” pod
    Quagga
    (BGP)
    VPN client

    BGP

    View Slide

  60. third parties
    colocation
    “connectivity” pod
    Quagga
    (BGP)
    VPN client

    BGP

    View Slide

  61. third parties
    colocation
    “connectivity” pod
    Quagga
    (BGP)
    VPN client

    BGP

    View Slide

  62. third parties
    colocation
    “connectivity” pod
    Quagga
    (BGP)
    VPN client

    BGP
    Linux HA
    Linux HA

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  63. View Slide

  64. third parties
    colocation
    “connectivity” pod
    Quagga
    (BGP)
    VPN client

    BGP
    Linux HA
    Linux HA

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  65. third parties
    colocation
    “connectivity” pod
    Quagga
    (BGP)
    VPN client

    BGP

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  66. View Slide

  67. B
    A

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  68. active standby

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  69. active standby

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  70. active standby

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  71. active standby

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  72. standby active

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  73. third parties
    colocation
    AWS
    “connectivity” pod
    Quagga
    (BGP)
    services ??????
    VPN client

    BGP

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  74. third parties
    colocation
    AWS
    “connectivity” pod
    Quagga
    (BGP)
    services
    HA VPN

    Appliance
    VPN client

    BGP

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  75. Amazon 

    eu-west-1

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  76. Build: Terraform
    Secure: Vault
    Develop: Vagrant
    Provision: Packer

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  77. monzo.com/careers

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  78. monzo.com/careers

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