Replace Stream API with Parallel Streams in Service Layer #64
Description
Summary
Refactor our service component to utilize Java parallel streams instead of the current stream API implementation.
Motivation
Parallel streams provide the capability to leverage multicore architectures, potentially improving performance for compute-intensive operations. This update will help modernize our codebase and take advantage of concurrent data processing where appropriate.
Tasks
- Identify usages of the Java Stream API in the service layer
- Assess suitability of each stream operation for parallelization (ensure thread safety and guard against side effects)
- Refactor qualified stream usages to use
.parallelStream()instead of.stream() - Create unit and integration tests to validate correctness and measure performance improvement
Acceptance Criteria
- All applicable service methods use parallel streams
- Existing functionality remains correct and passes tests
- Performance is evaluated and documented
Additional Notes
If there are operations that should not be parallelized (due to thread-safety concerns or minimal performance gain), document the rationale in code comments.