Description
Describe the feature
When parsing arn from a string, while throwing an exception is a way to convey the string is invalid, it's expensive, especially if it's on a hot code path and the client doesn't use the stacktrace at all. code. Based on internal Amazon profiling results, it can cause > 5% CPU cycles for some of the services to fill the stack trace when parsing arn, while spending >1% CPU cycles on exceptions can be considered needing optimizations.
To improve the performance, we can provide an API that doesn't throw exception, e.g. the API returns an Optional or throws exception but overrides its fillInStackTrace to avoid the expensive stacktrace filling.
Use Case
Arn.fromString parsing takes long CPU cycle due to unnecessary stacktrace filling.
Proposed Solution
Keep existing Arn.fromString API but also provide another API that either returns Optional or throws exception that does not fill stacktrace.
Other Information
No response
Acknowledgements
- I may be able to implement this feature request
- This feature might incur a breaking change
AWS Java SDK version used
Both v1 and v2
JDK version used
17, but it doesn't matter
Operating System and version
Linux