Building the core

Talk I gave on GOTOpia 2020

Transcript

1. Solarisbank Public Building the core Armin Pašalić, 16.09.2020, GOTOpia EUROPE 2020
2. Solarisbank Public Solarisbank Public 300+ We are Solarisbank Strong tech background +45% of our staff are talented developers & digital product experts Unique mix of experts A great mix of bankers, entrepreneurs and legal experts combined Diverse team More than 50 nationalities working together
3. Solarisbank Public Father and a husband. With Solarisbank engineering for over 4 years. Most of that time spent researching, designing, building and maintaining the core- banking system. I do things related to distributed systems, system and software architecture, domain design, testing and, in general, trying to make software nice and enjoyable to work with. Armin Pašalić Social networks: @krule
4. Solarisbank Public Solarisbank Public First to the market
5. Solarisbank Public What is this core-banking?
6. Solarisbank Public core
7. Solarisbank Public The core banking platform is the core software component that keeps track of all accounts, funds, and money movements while acting as a connection point to the outside world through integrations with payment networks like SEPA, Target2, or SWIFT. The system also has to serve all data points necessary to fulfill the reporting requirements we have as a regulated German bank. What is core banking? https://www.solarisbank.com/blog/getting-to-the-core-of-the-matter-why-solarisbank-built-its-own-core-banking/
8. Solarisbank Public Photo by Danilo Alvesd batteries included
9. Solarisbank Public Solarisbank Public I would like to make banking terminology used in this talk a bit closer to the average tech person enjoying this talk. For every term I will try to find as close equivalent as I can from our, technical day to day jargon. I also might miss some term and if you detect it, please ask after the talk and I will try my best to explain. Language Should be ubiquitous, maybe? Bundesbank Central Bank of Federal Republic of Germany. BIC Bank Identifier Code Like a DNS record, making it possible for banks to resolve where to direct the transfers. SEPA Single Euro Payments Area Real world distributed system connecting banks and making transfers possible in Europe
10. Solarisbank Public Solarisbank Public but…
11. Solarisbank Public Solarisbank Public scalability? Photo by Christian Lue
12. Solarisbank Public Solarisbank Public reliability? Photo by Kev Costello
13. Solarisbank Public Solarisbank Public control? Photo by Charles Deluvio
14. Solarisbank Public mitigation
15. Solarisbank Public challenge accepted
16. Solarisbank Public first steps
17. Solarisbank Public DDD
18. Solarisbank Public Event Sourcing
19. Solarisbank Public CQRS
20. Solarisbank Public one & 1/3
21. Solarisbank Public Solarisbank Public No measures in place Illustration purposes only, not an actual situation… 0 200 400 600 800 1000 1200 1400 1600 1 301 601 901 1201 1501 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 Capacity Load
22. Solarisbank Public Solarisbank Public Temporal distribution of the load Illustration purposes only, not an actual situation… 1 301 601 901 1201 1501 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 Capacity Load
23. Solarisbank Public eventually consistent
24. Solarisbank Public
25. Solarisbank Public Benefits we acquired by adding a new system Under control Became the source of truth for the business competency in question. Adding new features was no longer nearly impossible. number of features time needed to add new feature expected* actual* *Not actually measured, based on feedback by engineers who helped with the system
26. Solarisbank Public Benefits we acquired by adding a new system Under control Became the source of truth for the business competency in question. Adding new features was no longer nearly impossible. Scalable Ability to purposefully project data and independently scale and endpoint following request distribution patterns. Request Read Write
27. Solarisbank Public Benefits we acquired by adding a new system Under control Became the source of truth for the business competency in question. Adding new features was no longer nearly impossible. Scalable Ability to purposefully project data and independently scale and endpoint following request distribution patterns. Resilient Potential issues with the underlying system would not affect the operations of the partner facing API.
28. Solarisbank Public Solarisbank Public corona
29. Solarisbank Public Solarisbank Public event storming
30. Solarisbank Public
31. Solarisbank Public
32. Solarisbank Public
33. Solarisbank Public it was not all that smooth
34. Solarisbank Public singletons
35. Solarisbank Public not always eventual
36. Solarisbank Public present time
37. Solarisbank Public new BIC code: 11010101
38. Solarisbank Public you build it, you run it
39. Solarisbank Public going live
40. Solarisbank Public
41. Solarisbank Public Small victories some of them at least… Able to onboard big partners Potential partners which we might have rejected in the past due to scale concerns are now welcome on our system. Scalable Internal system can move money in milliseconds between partners in our network. Still growing While we still don’t have all of the competencies we want, we are growing the team and building them right now. Photo by Robert Collins
42. Solarisbank Public Solarisbank Public 15+ We are the core (banking) Go & Ruby Are the languages of choice. Emphasis on Golang. DDD, ES, CQRS We are working with exciting but proven software design concepts. Impact Building the plumbing of the future, today! Photo by me :-)
43. Solarisbank Public Solaris Digital Assets Public - Getting to the core of the matter: why Solarisbank built its own core-banking system - GOTO 2015 • DDD & Microservices: At Last, Some Boundaries! • Eric Evans - GOTO 2014 • Event Sourcing • Greg Young - Martin Fowler on Event Collaboration - SEPA - by European Central Bank Additional links Other, relevant links, talks and stuff
44. Solarisbank Public and one more thing :-)
45. Solarisbank Public Thank you!