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Building a Bank with Go - QCon London March 2017

Building a Bank with Go - QCon London March 2017

Traditionally applications have been built as monoliths; single applications which become larger and more complex over time, which limit our ability to react to change. An example of this is the banking industry where mergers and acquisitions between banks have lead to a patchwork of different systems & technologies that cost billions of dollars per year to maintain. As a result, the pace of innovation in the banking industry has slowed to a crawl. At Monzo we're building a new kind of bank backed by a microservice platform written in Go. In this talk we'll look at why Go is perfectly suited to this style of architecture, the language features that make it particularly attractive to high volume, low latency, distributed applications, and how easy it is to adopt into existing systems and organisations.

mattheath

March 07, 2017
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  1. A UK banking licence is authorised by the PRA and

    regulated by the PRA and FCA1, allowing deposit- taking and balance sheet lending. Once granted, it allows firms to passport across Europe, accessing This is followed by a “mobilisation” phase during which final capital is raised and IT systems are completed, before launching to the public. We received a UK banking licence in August 2016! FEB 2015 JAN 2016 JAN 2017 MAR FEB FEB APR MAR MAR APR MAY JUN JUL MAY APR JUN MAY JUL JUN AUG JUL SEP AUG NOV SEP DEC NOV DEC PRE APPLICATION APPLICATION MOBILISATION LAUNCH LICENCE WITH RESTRICTIONS 50K MAX DEPOSIT WE ARE HERE
  2. ?

  3. Service Discovery Load Balancing Timeouts and Expirations Retries Rate Limiting

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

    Connection Pooling Circuit Breaking Failure Detection Metrics and Tracing Interrupts Context Propagation
  5. Webhook
 Service Webhook
 Service Webhook
 Service Webhook
 Service Load Balancer

    HTTP API & Routing Layer Webhook
 API Slow or
 Errors
  6. API Service Service A Service B Load Balancer HTTP API

    & Routing Layer Service C Service D Service E
  7. package context type Context interface { Deadline() (deadline time.Time, ok

    bool) Done() <-chan struct{} Err() error Value(key interface{}) interface{} }
  8. package context type Context interface { Deadline() (deadline time.Time, ok

    bool) Done() <-chan struct{} Err() error Value(key interface{}) interface{} }
  9. package context type Context interface { Deadline() (deadline time.Time, ok

    bool) Done() <-chan struct{} Err() error Value(key interface{}) interface{} }
  10. API card-api card-processing cards transactions balance transaction-enrichment merchant feed-generator feed

    apns API card-api card-processing cards transactions balance transaction-enrichment merchant feed-generator feed apns
  11. API card-api card-processing cards transactions balance transaction-enrichment merchant feed-generator feed

    apns API card-api card-processing cards transactions balance transaction-enrichment merchant feed-generator feed apns
  12. API card-api card-processing cards transactions balance transaction-enrichment merchant feed-generator feed

    apns API card-api card-processing cards transactions balance transaction-enrichment merchant feed-generator feed apns
  13. API card-api card-processing cards transactions balance transaction-enrichment merchant feed-generator feed

    apns API card-api card-processing cards transactions balance transaction-enrichment merchant feed-generator feed apns
  14. API card-api card-processing cards transactions balance transaction-enrichment merchant feed-generator feed

    apns API card-api card-processing cards transactions balance transaction-enrichment merchant feed-generator feed apns
  15. API card-api card-processing cards transactions balance transaction-enrichment merchant feed-generator feed

    apns API card-api card-processing cards transactions balance transaction-enrichment merchant feed-generator feed apns