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Anticorrupting the Enterprise; 
or How I Learne...

Steven Ringo
October 11, 2017
Technology
0
350

Anticorrupting the Enterprise; 
or How I Learned to Stop Worrying and Love the Serverless

A talk presented at Serverlessconf NYC October 2017 (https://nyc.serverlessconf.io/), with my colleague Yun Zhi Lin.

With apologies to Dr Strangelove…

At amaysim we grew organically from startup to a listed enterprise. On our journey we have developed in-house software, purchased third-party solutions and inherited acquired companies' tech stacks. In many cases its been either unfeasible or just not possible to enhance or improve these systems directly. In addition, we integrate with providers that have unfriendly and inflexible “APIs” (scare quotes indeed!)

In many cases its expensive, time-consuming, error-prone and boring to maintain and operate these systems. Or they simply do not belong to us.

In this talk I show how the use of smart gateways, interceptors and transformers developed and choreographed using serverless technologies have allowed us to rapidly, easily and cheaply provide a protective shield from the legacy forces of evil.

To be able to divert development and operational efforts to modern environments and ecosystems together with the goodness of a mature SDLC with source control, CI/CD, environments, modern APIs and cloud.

A world where our virtual “anticorruption layer” protects us mortals from the horrors that are SMTP, FTP, SOAP, RPCs and other unsavoury protocols.

The talk will show some examples and case studies of how we have achieved this. And in the process keeping developers, marketing, accountants, testers, managers (“stakeholders”) and of course our customers, happy.

Steven Ringo

October 11, 2017
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Transcript

  1. Anticorrupting the Enterprise 
 or How I Learned to Stop

    Worrying and Love the Serverless Steven Ringo
 Yun Zhi Lin

  2. Come visit us in Australia

  3. About amaysim We make things amazingly simple Mobile plans and

    devices Broadband internet Electricity and gas

  4. We use Serverless. In Anger. In Production.

  5. Can it be done Serverless? Go for it Serverless first

    Rethink yes no

  6. Enrich transactional communications to customers from legacy systems Case study

    1

  7. no visibility into customer behaviour customer SMTP email business Original

    ? system

  8. CRM rich insights customer email sms push business Improved REST

    HTTP system

  9. CRM customer SMTP != HTTP SMTP email sms push REST

    HTTP business rich insights Impedance mismatch legacy system

  10. Old / outdated, but still in use Developer 404 not

    found Not the new hotness Antique hardware No unit tests Don’t touch Cloud alien SOAP ESB FTP What is legacy?

  11. Hard to maintain, improve, and expand Hard to integrate Hard

    to find developers High maintenance costs No documentation No security patches Impact of legacy

  12. Rebuild?
 Refactor?
 Buy new? Augment? Where to?

  13. Enter the anticorruption force Translate a “corrupt” legacy interface to

    an “honest” one applicable to your environment.

  14. CRM customer email sms push REST HTTP business rich insights

    SMTP Serverless SMTP to REST adapter legacy system

  15. 1. Embed metadata in email body <html> <body> <div>Nothing to

    see here</div> <div class="metadata" style="display: none !important;"> <!-- template_id: foo variation: bar reference: 38128323 first_name: Steven last_name: Ringo inception_date: unknown --> </div> </body> </html>

  16. <html> <body> <div>Nothing to see here</div> <div class="metadata" style="display: none

    !important;"> <!-- template_id: foo variation: bar reference: 38128323 first_name: Steven last_name: Ringo inception_date: unknown --> </div> </body> </html> POST https://my.crm.com/journey/new { "template_id": "foo", "variation": "bar", "reference": 38128323, "first_name": "Steven", "last_name": "Ringo", "inception_date": "unknown" } 2. Send through the adapter

  17. SES CRM
 gateway Future
 gateway Other API Mail parser Raw

    email SNS Parameterised metadata SaaS CRM RESTful API Legacy Services SMTP Implementation

  18. Unify interfaces to legacy back-end systems for consistency and reusability

    Case study 2

  19. Different protocols Different formats Bespoke integrations XML Different logins Mobile

    Number Internet Email Energy ID Store ID CSV CDATA JSON SOAP Webhooks FTP REST Legacy corruption zone! Customer

  20. Product platform gateways Events Format Customer creation and updates Legacy

    Anticorruption zone Customer Unified Domain Model Single Customer View Customer service details Login Customer Data Stream Internal APIs Gateway A Gateway B Gateway C Gateway D Asynchronous, ordered writes Synchronous reads

  21. Shameless plug! :-) Python-based shim for fast cold starts Uses

    idiomatic Go Powerful goroutines Easy dependency management github.com/yunspace/serverless-golang Serverless Go Sauce