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The Magic of Feature Toggles:
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LINE Developers Taiwan
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July 17, 2024
Technology
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The Magic of Feature Toggles:
Speaker: Aki Wang, Noah Hsu
Event: iThome DevOps Day 2024
LINE Developers Taiwan
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July 17, 2024
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Transcript
None
The Magic of Feature Toggles
王天甫 (Aki Wang) 許子庭 (Noah Hsu)
Feature Toggle
Function A Function B
Function A Function B
None
@RestController public class LayoutController { @GetMapping("/layouts/order") public ResponseEntity<?> getLayoutOrder() {
return ResponseEntity.ok(buildLayoutOrder()); } private Map<?, ?> buildLayoutOrder() { throw new UnsupportedOperationException("Not implemented yet"); } }
@RestController public class LayoutController { @GetMapping("/layouts/order") public ResponseEntity<?> getLayoutOrder() {
boolean isLayoutOrderEnabled = false; if (isLayoutOrderEnabled) { return ResponseEntity.ok(buildLayoutOrder()); } else { return ResponseEntity.notFound().build(); } } private Map<?, ?> buildLayoutOrder() { throw new UnsupportedOperationException("Not implemented yet"); } }
BUY NOW BUY NOW V S
@RestController public class LayoutController { @GetMapping("/layouts/order") public ResponseEntity<?> getLayoutOrder() {
return ResponseEntity.ok(buildLayoutOrder()); } private Map<?, ?> buildLayoutOrder() { return Map.of("color", "blue", "radius", "8px", "pos", "page"); } }
@RestController public class LayoutController { @GetMapping("/layouts/order") public ResponseEntity<?> getLayoutOrder() {
return ResponseEntity.ok(buildLayoutOrder()); } private Map<?, ?> buildLayoutOrder() { return Map.of("color", "green", "radius", "0px", "pos", "bottomNav"); } }
@RestController public class LayoutController { @GetMapping("/layouts/order") public ResponseEntity<?> getLayoutOrder() {
String themeName = "themeB"; switch (themeName) { case "themeB": return ResponseEntity.ok(buildThemeBLayoutOrder()); default: return ResponseEntity.ok(buildThemeALayoutOrder()); } } private Map<?, ?> buildThemeALayoutOrder() { return Map.of("color", "blue", "radius", "8px", "pos", "page"); } private Map<?, ?> buildThemeBLayoutOrder() { return Map.of("color", "green", "radius", "0px", "pos", "bottomNav"); } }
Invisibility Speed Experimentation Safety Live Update
longevity dynamism Release Toggles Ops Toggles Permission Toggles Experiment Toggles
years months weeks days changes with a deployment changes with runtime re-configuration changes with each request from https://martinfowler.com/articles/feature-toggles.html
Feature Toggle is second best solution. The best solution is
to find a way to gradually integrate, without Feature Branches or Feature Toggles
Flagship4j
Standardizing Feature Flagging for Everyone
One SDK, any backend Supports your favorite tools Speaks your
language
One SDK, any backend OpenFeatureAPI api = OpenFeatureAPI.getInstance(); api.setProvider(new OpenFlagrProvider());
Client client = api.getClient(); Boolean isHelloWorldEnabled = client.getBooleanValue("hello-world-enabled", false); if (isHelloWorldEnabled) { System.out.println("Hello World"); }
Supports your favorite tools
Speaks your language
OpenFlagr Open source feature flagging, A/B testing, and dynamic configuration
microservice in Go.
None
None
USE CASES
ON On / Off 100%
ON Rollout 100%
Blue A / B Testing Green 50% 50%
Q & A
None