Presentation provided to the Lisbon GraphQL meet-up February 2018.

1. GraphQL applied in
Corporate Banking
Robin Huiser, Chief Architect

2. Robin Huiser is an experienced,
hands-on software and DevOps
architect involved in the
architecture, design, and
implementation of microservices
architectures, service-oriented
architectures, and distributed
systems.

4. Corporate banking Like retail banking… on steroids.

10. – Corporate Banking eXperience Platform Principle
“99% of the API calls on a channel
platform are data inquiries
Dashboards are found more
valuable then viewing individual
data lists
...so we might as well optimise for this.”

12. REST…
For each transaction…
REST Client
REST Server
GET /accounts/{acct_id}/transactions
GET /transactions/{trn_id}/billingaddress
{
data: [
{id: 1, amnt: '...' },
{id: 2, amnt: '...' }
]
}
{
billingaddress: {
address: '...',
city: '...' },
...
}
}

13. … versus GraphQL
GraphQL Client
GraphQL Server
POST /graphql
query acctsWithTrnsAndBillAddr {
currentAccount(account: {iban: “…”}) {
transactions {
partyInf {
billingAddress {
address
city
}
{
"data": {
"currentAccount": {
"transactions": [
{
"partyInf": {
"billingAddress": {
"address": "155 Cummings Shores",
"city": "South Meta"
}
All about
aggregating data
models based
upon dynamic
queries to
optimise for
flexibility and
service response
times.

14. Non-functionals GraphQL commons

15. API contract first GraphQL Schemas

16. Implement resolvers GraphQL Service Domains
LMS-Sweeps LMS-ICL LMS-Pooling
Collections Receivables …

17. Data is projected Command Query Responsibility Segregation

18. Data is aggregated and in
corporate banking context
GraphQL Runtime
LMS-Sweeps LMS-ICL LMS-Pooling
Collections Receivables …
GraphQL
Runtime
Entitlements Organisations Reference FX Rates
dependencies

19. F/E queries cross domain
with entitlement hints
GraphQL Solution
GraphQL
Runtime
GraphQL
Runtime
GraphQL
Runtime
GraphQL
Runtime
GQL query()
Entitlements {}
Data {}

21. Obrigado!