Diverse perpectives of tools for microservices development

1. Welcome to
Microservices – to Code or Low Code
Connected technology is fundamental to high-performing businesses
Ian
Vanstone
IntegrationWorks
Global
PART 1 - Ballerina Taster
A programming language for
microservices integration

3. Everythingis
anendpoint
Functions
APIs
Data
SaaSapps
Legacy
apps
Devices

4. Local logic
and functions
Remote calls and dependencies
Old world app
New world “app”

5. Old world architecture New world architecture
Integration is separate Integration is embedded
Integration Platform

6. The
Integration
Gap
ESB, BPMN, EAI
Java / Spring
JavaScript / Node
AGILE
INTEGRATION SIMPLE

7. caller hello
GE
T
Hello World
$ ballerina run hello_world_service.bal
Initiating service(s) in 'hello_world_service.bal'
[ballerina/http] started HTTP/WS endpoint 0.0.0.0:9090
$ curl http://localhost:9090/hello/sayHello
Hello, World!
import ballerina/http;
import ballerina/log;
service hello on new http:Listener(9090) {
resource function sayHello(http:Caller caller, http:Request req) {
var result = caller->respond("Hello, World!");
if (result is error) {
log:printError("Error sending response", err = result);
}
}
}

9. caller hello
GE
T
Hello
World
caller
My
Application
Endpoint 1 Endpoint 2 Endpoint 3 Endpo

11. $ ballerina openapi export ballerina_to_openapi.bal
$ ballerina openapi gen-service openapi_to_ballerina.yaml -m pet_service
$ ballerina openapi gen-client openapi_to_ballerina.yaml -m pet_client

12. $ ballerina run hello_service.bal $ ballerina build hello_service.bal
$ ballerina run hello_service.balx
Ballerina Virtual Machine
Lightweight runtime
e.g. Simple Ballerina service which serves 500 concurrent users has a memory footprint of ~50 MB.

13. import ballerina/test;
@test:Config
function testAssertIntEquals() {
int answer = 0;
int a = 5;
int b = 3;
answer = intAdd(a, b);
test:assertEquals(answer, 8, msg = "int values not equal");
}
function intAdd(int a, int b) returns (int) {
return (a + b);
}
$ ballerina test
Testing

14. import ballerina/http;
import ballerinax/docker;
@http:ServiceConfig {
basePath:"/helloWorld"
}
@docker:Config {
registry:"docker.abc.com",
name:"helloworld",
tag:"v1.0"
}
service helloWorld on new http:Listener(9090) {
resource function sayHello (http:Caller caller, http:Request request) {
http:Response response = new;
response.setTextPayload("Hello, World! n");
_ = caller -> respond(response);
}
}
$ ballerina build hello_world_docker.bal
$ docker run -d -p 9090:9090 docker.abc.com/helloworld:v1.0

15. $ ballerina run --observe tracing.bal
ballerina: started publishing tracers to Jaeger on localhost:5775
Initiating service(s) in 'ballerina-home/lib/balx/prometheus/reporter.balx'
[ballerina/http] started HTTP/WS endpoint 0.0.0.0:9797
ballerina: started Prometheus HTTP endpoint 0.0.0.0:9797
Initiating service(s) in 'tracing.bal'
[ballerina/http] started HTTP/WS endpoint 0.0.0.0:9234

16. 1.The language
2.Language lock, stability
3.Community review of language specification
4.Language test suite
5.Merging / collapsing sequence diagrams
6.the BVM runtime, performance, etc.
7.LLVM prototype, Native compilation via LLVM
8.Longevity, stability, performance optimizations
9.Build system rationalization - common output
10.Build system - environment-specific builds
11.Internationalizing the grammar
12.Standard library
13.Enhance the seamless operation of cross platform behavior
14.Expand the list of supported database management systems
15.Extension / ecosystem improvements, such as Ballerina Central, registry, modules, customiza
16.Private version of Ballerina registry, powering Ballerina Central
17.Ability to write compiler extensions packaged with Ballerina modules
18.Ability to push compiled Ballerina programs into a registry (not just modules)
19.Integration related things around API gateway, message broker, transaction coordinator
20.Persistent and stateful services, ie "workflow"
21.Streaming SQL
22.API throttling support and API observability around API gateway
23.Optimize transaction model to support distributed transactions with MB
24.Transaction coordination - more coordination patterns will be introduced
25.In relation to workflow we plan checkpoint/restart, forward recoverability and compensation
26.Docker / Kubernetes compositions
27.Tooling
28.Observability integration into composer to facilitate tracing
29.Heterogeneous data transformations
Current version: 0.991.0

17. http://github.com/ballerina-platform/
Stack Overflow #ballerina tag
https://ballerina.io/philosophy/
https://ballerina.io/downloads/
https://ballerina.io/learn/by-example/
https://ballerina.io/learn/by-guide/
https://central.ballerina.io/

18. Thanks
Microservices – to Code or Low Code
Connected technology is fundamental to high-performing businesses
Ian
Vanstone
IntegrationWorks
Global
PART 1 - Ballerina Taster
A programming language for
microservices integration

19. Connected technology is fundamental to high-performing businesses
Mark
Ashcroft
OutSystems
PART 2 - OutSystems
Low-Code… Changing the game
in the world of microservices
Welcome to
Microservices – to Code or Low Code

20. Agility
OSS
+
custom code
COTS
(e.g. Legacy ERP)
COTS
(Modern SaaS)

21. Feature List Popular Implementations
UI Angular
App framework Spring
Containers Kubernetes
State/Data Redis
Connectors Lots!
CI/CD Jenkins
Observability Prometheus
Microservices Candy Store Shopping List
Lots of code
+
Lots of OSS
+
TBD
integration

22. Agility
Complexity
OSS
+
custom code
COTS
(e.g. Legacy ERP)
COTS
(Modern SaaS)

23. Agility doesn’t need to
be complex

24. Agility
Complexity
COTS
(e.g. Legacy ERP)
COTS
(Modern SaaS)
? OSS
+
custom code

25. Agility
Complexity
COTS
(e.g. Legacy ERP)
COTS
(Modern SaaS)
OSS
+
custom code

26. Founded in 2001 -
Lisbon; Privately
Owned
FY 2018: $100M+ USD
in sales; 1000
employees; growing
>50% YOY
52
Countries
22
Industries
245+
Global Partners
220K+
Community Members

27. OutSystems Leadership Web & Mobile
Mobile App Development
Platforms Q3 2018
Low-Code Dev Platforms for AD&D
Professionals, Q1 2019

30. 5 Day Build – 2 Developers
Energy Services
(sFTP)
Forex Services
(Restful API)
Production Data
(external SQL db via VPN)
Insights Back Office (Notifications)
Insights Mobile Application
wits
Open Exchange
Rates
Production Db
Connector Apps
External Systems
Core Apps

31. Demo Services at Speed

32. Microservices Shopping List
Requirement Microservices
Implementation
OutSystems
UI Angular OOTB Web & Mobile
App framework Spring OOTB
Orchestration Kubernetes OOTB
State/Data Redis OOTB
Connectors Lots! OOTB &
CI/CD Jenkins OOTB and consumable (Lifetime Applications)
Observability Prometheus OOTB and consumable (Lifetime Analytics)

33. 3
3
Building & Reusing
Services @ Speed

34. If you would like us to come and talk with your team, just reach out to
ian.vanstone@integration.works