Add Microservices Bulkhead pattern implementation (#3228)#3326
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beingadish wants to merge 8 commits into
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Add Microservices Bulkhead pattern implementation (#3228)#3326beingadish wants to merge 8 commits into
beingadish wants to merge 8 commits into
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- Implements resource isolation with dedicated thread pools - Demonstrates fail-fast behavior under load - Fixes iluwatar#3228
PR SummaryImplemented resource isolation with dedicated thread pools ( Changes
autogenerated by presubmit.ai |
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This PR is stale because it has been open 60 days with no activity. |
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✅ LGTM!
Review Summary
Commits Considered (2)
Files Processed (8)
- microservices-bulkhead/README.md (1 hunk)
- microservices-bulkhead/pom.xml (1 hunk)
- microservices-bulkhead/src/main/java/com/iluwatar/bulkhead/App.java (1 hunk)
- microservices-bulkhead/src/main/java/com/iluwatar/bulkhead/BackgroundService.java (1 hunk)
- microservices-bulkhead/src/main/java/com/iluwatar/bulkhead/BulkheadService.java (1 hunk)
- microservices-bulkhead/src/main/java/com/iluwatar/bulkhead/Task.java (1 hunk)
- microservices-bulkhead/src/main/java/com/iluwatar/bulkhead/TaskType.java (1 hunk)
- microservices-bulkhead/src/main/java/com/iluwatar/bulkhead/UserService.java (1 hunk)
Actionable Comments (0)
Skipped Comments (5)
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microservices-bulkhead/pom.xml [2-9]
best_practice: "License header cleanliness in module pom"
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microservices-bulkhead/pom.xml [68-73]
maintainability: "Unneeded Lombok dependency in module"
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microservices-bulkhead/src/main/java/com/iluwatar/bulkhead/BulkheadService.java [85-97]
enhancement: "Blocking sleep in worker thread"
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microservices-bulkhead/src/main/java/com/iluwatar/bulkhead/BackgroundService.java [31-37]
enhancement: "Background rejection handling lacks specific logic"
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microservices-bulkhead/src/main/java/com/iluwatar/bulkhead/UserService.java [32-37]
enhancement: "User service rejection handling lacks user-facing fallback"
Author
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Hi @iluwatar , kindly merge this PR |
iluwatar
requested changes
Jun 7, 2026
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iluwatar
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iluwatar
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Add the new module to parent pom.xml, otherwise it's not built by CI at all.
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✅ LGTM!
Review Summary
Commits Considered (1)
- 068950a: Merge branch 'iluwatar:master' into feature/microservices-bulkhead
Files Processed (0)
Actionable Comments (0)
Skipped Comments (0)
* Remove `org.projectlombok:lombok` dependency. * Add explicit version `3.27.7` to the `org.assertj:assertj-core` test dependency.
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✅ LGTM!
Review Summary
Commits Considered (5)
- 59d1228: build: update dependencies in microservices-bulkhead
- Remove
org.projectlombok:lombokdependency. - Add explicit version
3.27.7to theorg.assertj:assertj-coretest dependency.
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d812403: build: add microservices-bulkhead module to root pom
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068950a: Merge branch 'iluwatar:master' into feature/microservices-bulkhead
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da16647: Merge branch 'master' into feature/microservices-bulkhead
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0dc5355: Add Microservices Bulkhead pattern implementation
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Implements resource isolation with dedicated thread pools
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Demonstrates fail-fast behavior under load
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Fixes #3228
Files Processed (9)
- microservices-bulkhead/README.md (1 hunk)
- microservices-bulkhead/pom.xml (1 hunk)
- microservices-bulkhead/src/main/java/com/iluwatar/bulkhead/App.java (1 hunk)
- microservices-bulkhead/src/main/java/com/iluwatar/bulkhead/BackgroundService.java (1 hunk)
- microservices-bulkhead/src/main/java/com/iluwatar/bulkhead/BulkheadService.java (1 hunk)
- microservices-bulkhead/src/main/java/com/iluwatar/bulkhead/Task.java (1 hunk)
- microservices-bulkhead/src/main/java/com/iluwatar/bulkhead/TaskType.java (1 hunk)
- microservices-bulkhead/src/main/java/com/iluwatar/bulkhead/UserService.java (1 hunk)
- pom.xml (1 hunk)
Actionable Comments (0)
Skipped Comments (3)
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microservices-bulkhead/src/main/java/com/iluwatar/bulkhead/BulkheadService.java [67-78]
enhancement: "Clarify and extend the rejection path for observability"
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microservices-bulkhead/src/main/java/com/iluwatar/bulkhead/BackgroundService.java [31-37]
enhancement: "Background rejection hook could implement fallback"
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microservices-bulkhead/src/main/java/com/iluwatar/bulkhead/UserService.java [31-37]
enhancement: "User rejection handling could expose a user-facing fallback"
Refactor all core classes and add comprehensive test coverage for the Microservices Bulkhead pattern. Refactored: - BulkheadService: overhaul thread pool isolation logic - App: update demo to reflect revised service APIs - BackgroundService, UserService: align with updated BulkheadService - Task, TaskType: revise model structure and toString representation - pom.xml: update module dependency configuration Added tests: - AppTest: verifies main entry point runs without exception - BulkheadServiceTest: task acceptance, overflow rejection, active thread count, queue size reporting, and graceful shutdown - BackgroundServiceTest: task submission, bulkhead overflow, and isolation from UserService overload - UserServiceTest: user request acceptance and isolation from overloaded BackgroundService - TaskTest: name, type, duration getters and toString format - TaskTypeTest: enum values USER_REQUEST and BACKGROUND_PROCESSING
- Task: used Lombok @Getter
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🚨 Pull request needs attention.
Review Summary
Commits Considered (2)
- c1951c4: Refactored:
- Task: used Lombok @Getter
- 73fe983: feat(microservices-bulkhead): refactor implementation and add unit tests
Refactor all core classes and add comprehensive test coverage for the
Microservices Bulkhead pattern.
Refactored:
- BulkheadService: overhaul thread pool isolation logic
- App: update demo to reflect revised service APIs
- BackgroundService, UserService: align with updated BulkheadService
- Task, TaskType: revise model structure and toString representation
- pom.xml: update module dependency configuration
Added tests:
- AppTest: verifies main entry point runs without exception
- BulkheadServiceTest: task acceptance, overflow rejection, active thread
count, queue size reporting, and graceful shutdown - BackgroundServiceTest: task submission, bulkhead overflow, and isolation
from UserService overload - UserServiceTest: user request acceptance and isolation from overloaded
BackgroundService - TaskTest: name, type, duration getters and toString format
- TaskTypeTest: enum values USER_REQUEST and BACKGROUND_PROCESSING
Files Processed (14)
- microservices-bulkhead/pom.xml (1 hunk)
- microservices-bulkhead/src/main/java/com/iluwatar/bulkhead/App.java (1 hunk)
- microservices-bulkhead/src/main/java/com/iluwatar/bulkhead/BackgroundService.java (1 hunk)
- microservices-bulkhead/src/main/java/com/iluwatar/bulkhead/BulkheadService.java (1 hunk)
- microservices-bulkhead/src/main/java/com/iluwatar/bulkhead/Task.java (1 hunk)
- microservices-bulkhead/src/main/java/com/iluwatar/bulkhead/TaskType.java (1 hunk)
- microservices-bulkhead/src/main/java/com/iluwatar/bulkhead/UserService.java (1 hunk)
- microservices-bulkhead/src/test/java/com/iluwatar/bulkhead/AppTest.java (1 hunk)
- microservices-bulkhead/src/test/java/com/iluwatar/bulkhead/BackgroundServiceTest.java (1 hunk)
- microservices-bulkhead/src/test/java/com/iluwatar/bulkhead/BulkheadServiceTest.java (1 hunk)
- microservices-bulkhead/src/test/java/com/iluwatar/bulkhead/TaskTest.java (1 hunk)
- microservices-bulkhead/src/test/java/com/iluwatar/bulkhead/TaskTypeTest.java (1 hunk)
- microservices-bulkhead/src/test/java/com/iluwatar/bulkhead/UserServiceTest.java (1 hunk)
- pom.xml (1 hunk)
Actionable Comments (2)
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microservices-bulkhead/src/main/java/com/iluwatar/bulkhead/Task.java [14-16]
best_practice: "Missing Lombok dependency for Task model"
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microservices-bulkhead/pom.xml [68-74]
test: "JUnit 5 API dependency missing"
Skipped Comments (0)
There was a problem hiding this comment.
✅ LGTM!
Review Summary
Commits Considered (1)
- 9d51b47: style: add license headers and apply Google Java Format
Files Processed (12)
- microservices-bulkhead/src/main/java/com/iluwatar/bulkhead/App.java (1 hunk)
- microservices-bulkhead/src/main/java/com/iluwatar/bulkhead/BackgroundService.java (1 hunk)
- microservices-bulkhead/src/main/java/com/iluwatar/bulkhead/BulkheadService.java (1 hunk)
- microservices-bulkhead/src/main/java/com/iluwatar/bulkhead/Task.java (1 hunk)
- microservices-bulkhead/src/main/java/com/iluwatar/bulkhead/TaskType.java (1 hunk)
- microservices-bulkhead/src/main/java/com/iluwatar/bulkhead/UserService.java (1 hunk)
- microservices-bulkhead/src/test/java/com/iluwatar/bulkhead/AppTest.java (1 hunk)
- microservices-bulkhead/src/test/java/com/iluwatar/bulkhead/BackgroundServiceTest.java (1 hunk)
- microservices-bulkhead/src/test/java/com/iluwatar/bulkhead/BulkheadServiceTest.java (1 hunk)
- microservices-bulkhead/src/test/java/com/iluwatar/bulkhead/TaskTest.java (1 hunk)
- microservices-bulkhead/src/test/java/com/iluwatar/bulkhead/TaskTypeTest.java (1 hunk)
- microservices-bulkhead/src/test/java/com/iluwatar/bulkhead/UserServiceTest.java (1 hunk)
Actionable Comments (0)
Skipped Comments (12)
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microservices-bulkhead/src/main/java/com/iluwatar/bulkhead/Task.java [1-45]
maintainability: "Lombok usage for Task"
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microservices-bulkhead/src/main/java/com/iluwatar/bulkhead/BulkheadService.java [1-159]
maintainability: "BulkheadService rationale and capabilities"
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microservices-bulkhead/src/main/java/com/iluwatar/bulkhead/BackgroundService.java [1-57]
maintainability: "BackgroundService rationale and delegation"
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microservices-bulkhead/src/main/java/com/iluwatar/bulkhead/App.java [1-138]
maintainability: "App entry point demonstrating the Microservices Bulkhead"
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microservices-bulkhead/src/main/java/com/iluwatar/bulkhead/TaskType.java [1-36]
maintainability: "TaskType enum structure"
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microservices-bulkhead/src/test/java/com/iluwatar/bulkhead/AppTest.java [1-32]
maintainability: "AppTest invokes App.main"
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microservices-bulkhead/src/test/java/com/iluwatar/bulkhead/BulkheadServiceTest.java [1-80]
maintainability: "BulkheadService basic tests"
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microservices-bulkhead/src/test/java/com/iluwatar/bulkhead/BackgroundServiceTest.java [1-73]
maintainability: "BackgroundServiceTest overview"
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microservices-bulkhead/src/test/java/com/iluwatar/bulkhead/AppTest.java [1-32]
maintainability: "AppTest invokes App.main"
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microservices-bulkhead/src/test/java/com/iluwatar/bulkhead/TaskTest.java [1-54]
maintainability: "Task unit tests"
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microservices-bulkhead/src/test/java/com/iluwatar/bulkhead/TaskTypeTest.java [1-44]
maintainability: "TaskType enum tests"
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microservices-bulkhead/src/test/java/com/iluwatar/bulkhead/BulkheadServiceTest.java [1-80]
maintainability: "BulkheadService basic tests"
Owner
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@beingadish consider rebasing on top of |
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What does this PR do?
Fixes #3228